This track has been raced on 2 configurations (Scoring Sidebar Race, 4.05 mi; 4.01 mi). Laps on different configurations are not comparable, so only events on the 4.05 mile layout are shown; switch above to see the others.
Sectors are not comparable across all of these events. Sector times and the theoretical lap use Runoffs 2025, Runoffs 2026 only. Runoffs 2020 (different number of sectors), Runoffs 2024 (different number of sectors) count towards whole-lap times and trap speed only.
One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it.
Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.
Sectors
S1 SF → I4AT 1.26 mi
S2 I4AT → I11 1.65 mi
S3 I11 → I13AB 0.57 mi
S4 I13AB → SF 0.57 mi
SF Spd SF → SFT 0.02 mi
Spd I4AT → I4A 0.02 mi
Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.
By car
Car
Class
Drivers
Lap
Qual
Race
Trap
S1
S2
S3
S4
Ford Mustang GT
AS
18
2:26.429Gregory Eaton
2:26.578Gregory Eaton
2:26.429Gregory Eaton
151.5Andrew McDermid
40.348Andrew McDermid
57.126Andrew McDermid
28.499Gregory Eaton
19.379Andrew McDermid
Ford Mustang
AS
5
2:26.429Gregory Eaton
2:26.578Gregory Eaton
2:26.429Gregory Eaton
149.6Gregory Eaton
41.195Gregory Eaton
57.199Gregory Eaton
28.499Gregory Eaton
19.414Gregory Eaton
Ford Mustang GT
AS
11
2:26.792Andrew McDermid
2:26.792Andrew McDermid
2:26.922Andrew McDermid
151.5Andrew McDermid
40.348Andrew McDermid
57.126Andrew McDermid
28.795Andrew McDermid
19.379Andrew McDermid
Ford Mustange
AS
1
2:29.395Thomas J Ellis
2:29.395Thomas J Ellis
2:30.247Thomas J Ellis
149.0Thomas J Ellis
41.281Thomas J Ellis
58.748Thomas J Ellis
29.329Thomas J Ellis
19.406Thomas J Ellis
Ford Mustang Cobra
AS
1
2:36.624Tim White
2:36.624Tim White
2:37.234Tim White
132.9Tim White
43.847Tim White
1:04.491Tim White
31.895Tim White
20.424Tim White
Chevrolet Camaro
AS
11
2:26.655Daniel Richardson
2:26.655Daniel Richardson
2:27.133Daniel Richardson
148.5Daniel Richardson
41.496Daniel Richardson
57.444Daniel Richardson
28.881Daniel Richardson
19.675Daniel Richardson
Chevrolet Camaro
AS
10
2:26.655Daniel Richardson
2:26.655Daniel Richardson
2:27.133Daniel Richardson
148.5Daniel Richardson
41.496Daniel Richardson
57.444Daniel Richardson
28.881Daniel Richardson
19.675Daniel Richardson
Chevrolet Camaro SS
AS
1
2:35.729Tom Brown
2:35.729Tom Brown
2:36.976Tom Brown
124.9Tom Brown
Pontiac Firebird
AS
3
2:28.947Amy Aquilante
2:28.947Amy Aquilante
2:28.961Amy Aquilante
147.4Amy Aquilante
Cadillac CTS-V
AS
1
2:30.400Thomas West
2:31.344Thomas West
2:30.400Thomas West
146.5Thomas West
The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.
Rule changes between these events
Runoffs 2020 → Runoffs 2024 2020-10-02 to 2024-10-01
AS Request Additional Engine Options for Dodge Challenger Spec Line
#29543 from American Sedan Committee · Rule change · TB 20-12 (2020-12 Fastrack)
slowerAS Dodge Challenger 08-20 gains 6.1L and 6.4L V8 options; 5.7L weight rises to 3500 lbs on 295 tyres, 3600 on 315 tyres.
In AS Engine Spec, Dodge Challenger (08-14) change as follows: "Dodge Challenger (08-14 20) Restricted Preparation 5.7L, 6.1L, or 6.4L V8 (Iron block, Aluminum heads), 2 valves/cylinder" In AS Engine Spec, Dodge Challenger (08-14) Restricted Preparation 5.7L V8 (Iron block, Aluminum heads), 2 valves/ cylinder, change Weight (lbs.) (tire sizes are max): "275 Tire: 3450 295 Tire: 3500 315 Tire: 3600" In AS Engine Spec, Dodge Challenger (08-14) change Notes as follows: "Max. Wheel Size 18 X 10 12. Stock brakes or alternate Dodge brakes (Part numbers: front caliper (05175106 (R) and 05175107 (L); rear caliper (R1542564 (R) and R1542565 (L))) may be used with the brake rotor sizes listed in this specification line.
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Compression Ratio: 10.5:1 10.9:1 max; Cylinder Bore, 3.9170 inches; Stroke, 3.5780 inches; Intake Valve Diameter, 2.050 inches; Exhaust Valve Diameter, 1.550 inches; Camshaft Lift @ Lobe, Intake (12.7 mm), Exhaust (11.3 mm), Camshaft Duration at .05 inches valve lift, (Intake, 188 degrees), (Exhaust, 205 degrees); Throttle Body Bore, 81 mm; Rocker Arm Ratio, 1.650:1. (Camshaft Lift tolerance .076 mm). Minimum ride height, 4.00 inches. Dodge 1GL20TZZAB and 82211606 rear spoilers permitted. Dodge 68043390AA air dam permitted. Mopar Performance Parts LX LC LD Cold Air Intake System is permitted. Mopar Performance Parts camshaft stage2 Kit P/N-77072313AB is permitted on the 5.7l engine. 76mm flat plate restrictor is required on the 6.4L engine. All engine displacements are eligible in all model years, with each engine being used as a complete assembly."
AS Rule simplification spec line communization
#29824 from American Sedan Committee · Rule change · TB 20-12 (2020-12 Fastrack)
fasterAS Camaro/Firebird (93-02) and Mustang Coupe GT (05-14) consolidated into single specs with 100 lb and 300 lb weight reductions respectively.
In AS, Spec Lines, remove the following Spec Lines: Chevrolet/Pontiac Camaro & Firebird (93-02) Chevrolet/Pontiac Camaro & Firebird (93-97) Restricted Prep. 5.7L V-8 (Iron Block, Aluminum Heads) LT1, 2 valves per cylinder Chevrolet/Pontiac Camaro & Firebird (98-02) Restricted Prep. 5.7L V-8 (Aluminum Block, Aluminum Heads) LS1, 2 valves per cylinder Ford Mustang GT (05-14) 4.6L OHC (05-10) Restricted Prep. (Aluminum Block, Aluminum Heads), 3 valves per cylinder Ford Mustang Coupe GT HR 4.6L OHC (05-10) Restricted Prep. (Aluminum Block, Aluminum Heads), 3 valves per cylinder Ford Mustang Coupe GT 5.0L DOHC (11-14) Restricted Prep. (Aluminum Block, Aluminum Heads), 4 valves per cylinder
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In AS, Spec Lines, add Chevrolet/Pontiac Camaro & Firebird (93-02):
A specification table follows in the original; it is not shown here.
AS Request for 2015 -2017 Ford Mustang Spec Line
#29514 from Scott Marcero · Rule change · TB 21-01 (2021-01 Fastrack)
neutralFord Mustang GT 5.0L 15-17 Restricted Preparation classified in AS with 55mm flat plate restrictor required.
In AS, Spec Lines, classify the Ford Mustang GT 5.0l (15-17) Restricted Preparation as follows: AS Wheel-base Gear Ratios Std. (or Alt.) Brakes (Max) (in/mm) Weight (lbs) Notes:
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Ford Mustang GT 5.0l (15-17) Restricted Preparation 107.0 3.66, 2.43, 1.69, 1.32, 1.00, .65 (14.0/355) 295 tire: 3600 Max. Wheel Size: 18 x 10. Stock brakes or alternate Ford Brembo Brake caliper (Ford Racing Kit #M-2300-S) may be used. 55mm flat plate restrictor required. Rear spring relocation to shock permitted.
AS Request Trunk lid / Rear Hatch clarification
#29591 from Tom Brown · Rule change · TB 21-01 (2021-01 Fastrack)
neutralAS underhood bracing on stock hoods, trunks, and rear decks may be modified or removed.
In GCR, Section 9.1.6.D.7.d.4., change as follows: "Underhood bracing on stock hoods, trunks, and rear decks may be modified or removed."
fasterAS Cadillac CTS-V 04-07 with 295 tire drops to 3450 lbs; Camaro SS V8 10-13 275 tire removed; Challenger 08-20 gains 315 tire option at 3600 lbs.
In AS, change Weight (lbs.) (tire sizes are max) as follows: Cadillac CTS-V (04-07): "275 Tire: 3420 295 Tire: 3470 3450" Chevrolet Camaro SS (V8) (10-13): "275 Tire: 3550" Dodge Challenger (08-20): "295 Tire: 3500 315 Tire: 3600" TECHNICAL BULLETIN
AS Correction to specifications inadvertently deleted
#30041 from American Sedan Committee · Rule change · TB 21-01 (2021-01 Fastrack)
fasterAS Camaro & Firebird (93-02) and Mustang GT (05-14) specifications restored with 200 lb weight reduction for permitted heads.
In AS, classify the Chevrolet/Pontiac Camaro & Firebird (93-02) as follows: AS Wheel- base Gear Ratios Std. (or Alt.) Brakes (Max) (in/mm) Weight (lbs) Notes: Chevrolet/Pontiac
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Camaro & Firebird (93- 02) 101.1 See 9.1.6.D.3.a.1.a 13.1 x 1.27 Disc 3250 Over 313 CID 3500 Underside of cowl may be modified to facilitate carb installation. The cowl and shock tower sheet metal may be modified to allow the installation of an 82-92 F-body brake booster and master cylinder. Engine/transmission installation procedure as provided by SCCA Road Racing Technical Department shall be utilized. Engine built to A/S Build Sheet specifications with the following: Head Casting #’s: 1410 → 1081, 1401 → 4416; Port Volume (Max.): 081 casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 200 lb weight reduction. Edelbrock Cylinder Head Part #’s 608979, 608879 are permitted. In AS, classify the Ford Mustang GT (05-14) as follows: AS Wheel-base Gear Ratios Std. (or Alt.) Brakes (Max) (in/mm) Weight (lbs) Notes: Ford Mustang GT (05-14) 107.1 See 9.1.6.D.3.a.1.a 13.1 x 1.27 Disc 3350 Over 313 CID 3600 Engine/transmission installation procedure as provided by SCCA Road Racing Technical Department shall be utilized. Engine built to A/S Build Sheet specifications with the following: Head Casting #s: F3ZE AA (GT40), F1ZE-AA (GT-40), F77E-AA (GT-40P), Port Volume (Max.): 143.00cc IN/54.00cc EX (GT-40 & GT-40P) with a 200 lb weight reduction. Edelbrock Cylinder Head Part #s 602579, 602479 are permitted.
AS AS Mustang LP 4.6 3V Classification Transmission Request
#29886 from David Mead · Rule change · TB 21-03 (2021-03 Fastrack)
In AS Spec Lines, Ford Mustang Coupe GT (05-14) Restricted Prep. (Aluminum Block, Aluminum Heads) 4.6L/5spd 3 valves per cylinder 5.0L/6spd 4 valves per cylinder, change notes as follows: "Max. Wheel Size: 18 X 10. Stock brakes or alternate Ford 14” Brembo Brake (Ford Racing Kit #M-2300-S) may be used. Either engine and/or trans may be used as an assembly. Tremec Magnum transmission may be used as a replacement assembly for the OEM transmission. P/N-TUET11010. Max compression ratio, 11.2:1 4.6L/5spd engine/trans: Any commercially available cold air intake that bolts onto the engine is permitted. No modifications to the body, chassis, grill or bumper are permitted when installing a cold air intake.Cold Air Intake, Ford Racing Part M-9603-M463 or K&N 69-3523KP cold
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air intake may be used. Replacement exhaust manifolds, or “headers,” as specified in the Full Prep American Sedan rules may be used. Ford Performance camshaft kit P/N M-6550-3V may be used. Flywheel/clutch, as specified in the Full Prep American Sedan rules may be used. The 4.6L/5spd engine assembly has a weight reduction of 300 lbs. 5.0L/6spd engine/trans: 56mm flat plate restrictor is required."
AS Request CF driveshaft on CTS-V for durability improvement
AS Request to consolidate SN95 Mustang '94-'04 Mustang spec lines
#30428 from Mark Wheaton · Rule change · TB 21-06 (2021-06 Fastrack)
neutralAS consolidates seven SN95 Mustang spec lines into three: 94-04 including Cobra, 94-95 5.0/5.8, and 96-04 4.6L two/four valve.
In AS Spec Lines, remove in its entirety Ford Mustang Incl. Cobra thru 95 (94-98). In AS Spec Lines, remove in its entirety Ford Mustang Incl. Cobra (99-04). In AS Spec Lines, remove in its entirety Ford Mustang Cobra and GT (94-95) Restricted Prep. 5.0L V8 pushrod engine (Iron Block, Iron Heads), 2 valves per cylinder In AS Spec Lines, remove in its entirety Ford Mustang Cobra R (1995) Restricted Prep. 5.8L V8 pushrod engine (Iron Block, Iron heads), 2 valves per cylinder In AS Spec Lines, remove in its entirety Ford Mustang Cobra and GT (96-98) Restricted Prep. GT: 4.6L V8 OHC engine (Iron Block, Aluminum heads), 2 valves per cylinder Cobra: 4.6L dual OHC engine (Aluminum Block, Aluminum Heads), 4 valves per cylinder
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In AS Spec Lines, remove in its entirety Ford Mustang Cobra (99-02) Restricted Prep. 4.6L dual OHC V8 Aluminum Block, Aluminum Heads), 4 valves per cylinder In AS Spec Lines, remove in its entirety Ford Mustang GT (99-04) Restricted Pep 4.6L V8 OHC engine (Iron Block, Aluminum heads), 2 valves per cylinder In AS Spec Lines, remove in its entirety Ford Mustang Mach 1 (03-04) Restricted Prep. 4.6L V8 dual OHC (Aluminum Block, Aluminum Heads), 4 valves per cylinder In AS Spec Lines, classify Ford Mustang Including Cobra 94-04 as follows:
A specification table follows in the original; it is not shown here.
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Andrew McDermid, James Jost, Michael Lavigne, Evan Pecore, Ross Murray, Michael Kamalian, Philip Smith, Dylan Licklider, Roger Eagleton, Stephen Ott, Lynne Griffiths, Thomas J Ellis, Tim White
AS American Sedan Transmission Rule Change Request
fasterAS Camaro/Firebird LT1/LS1 transmission code changes to 6362; Mustang GT 4.6L/5spd changes to 5.0L/6spd with 300 lbs weight reduction.
In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted Prep. 5.7L V-8 LT1 (Iron Block, Aluminum Heads) 2 valves per cylinder 5.7L V-8 LS1 (Aluminum Block, Aluminum Heads) 2 valves per cylinder, change Notes as follows: "TUET11009 6362" In AS Spec Lines, Ford Mustang Coupe GT (05-14) Restricted Prep. (Aluminum Block, Aluminum Heads) 4.6L/5spd 3 valves per cylinder 5.0L/6spd 4 valves per cylinder, change notes as follows: "TUET11010 TUKT16901" "The 4.6L/5spd engine assembly has a weight reduction of 300 lbs."
AS Correction to specifications inadvertently deleted
#30691 from American Sedan Committee · Rule change · TB 21-06 (2021-06 Fastrack)
neutralAS Camaro/Firebird and Mustang GT gear ratio specifications restored with alternate sets permitted.
In AS, Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02), change as follows: Gear Ratios: "3.42, 2.28, 1.45, 1.00 or 2.95, 1.94, 1.34, 1.00, 0.73 or 3.35, 1.93, 1.29, 1.00, 0.61See 9.1.6.D.3.a.1.a." Notes: "Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted." In AS, Spec Lines, Ford Mustang GT (05-14), change as follows: Gear Ratios: "2.95, 1.94, 1.34, 1.00, 0.63 or 3.35, 1.99, 1.33, 1.00, 0.68See 9.1.6.D.3.a.1.a." Notes: "Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted."
AS weight adjustments
#30700 from American Sedan Committee · Rule change · TB 21-06 (2021-06 Fastrack)
slowerAS Chevrolet Camaro & Firebird, Ford Mustang variants, Mercury Capri minimum weights increase 50 lbs across all model years.
In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (82-92), change as follows: Weight:"3250 3300" Notes: "200 250 lb weight reduction." In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02), change as follows: Weight:"3250 3300" Notes: "200 250 lb weight reduction." In AS Spec Lines, Ford Mustang Incl. Cobra & Cobra R (79-93), change as follows: Weight:"3150 3200"
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Notes: "200 250 lb weight reduction." In AS Spec Lines, Ford Mustang Incl. Cobra thru 95 (94-98), change as follows: Weight:"3250 3300" Notes: "200 250 lb weight reduction." In AS Spec Lines, Ford Mustang Incl. Cobra (99-04), change as follows: Weight:"3250 3300" Notes: "200 250 lb weight reduction." In AS Spec Lines, Ford Mustang GT (05- 14), change as follows: Weight:"3350 3400" Notes: "200 250 lb weight reduction." In AS Spec Lines, Mercury Capri (79-86), change as follows: Weight:"3150 3200" Notes: "200 250 lb weight reduction."
Applies to Chevrolet Camaro on this page: Daniel Richardson, Philip Smith, John Heinricy, Kyle Gilbert, Andy Schniedermeyer, Phillip Waters, Kelly Lubash, David Henderson, Curt Faigle, Douglas Cross, Tom Brown
Applies to Pontiac Firebird on this page: Amy Aquilante, Kyle Jones, Beth Aquilante
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Andrew McDermid, James Jost, Michael Lavigne, Evan Pecore, Ross Murray, Michael Kamalian, Philip Smith, Dylan Licklider, Roger Eagleton, Stephen Ott, Lynne Griffiths, Thomas J Ellis, Tim White
AS Request for adjustable Front Upper Control Arms on 4th Gen F-Body
#30457 from Robert Long · Rule change · TB 21-10 (2021-10 Fastrack)
neutralAS Chevrolet/Pontiac Camaro & Firebird 93-02 now allow BMR AA004 or UMI 2310 adjustable front upper control arms.
Effective January 1, 2022, In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02), add to Notes as follows: "BMR AA004 or UMI 2310 adjustable front upper control arm may be installed." Effective January 1, 2022, In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted Prep, add to Notes as follows: "BMR AA004 or UMI 2310 adjustable front upper control arm may be installed."
Applies to Chevrolet Camaro on this page: Daniel Richardson, Philip Smith, John Heinricy, Kyle Gilbert, Andy Schniedermeyer, Phillip Waters, Kelly Lubash, David Henderson, Curt Faigle, Douglas Cross, Tom Brown
Applies to Pontiac Firebird on this page: Amy Aquilante, Kyle Jones, Beth Aquilante
slowerAS Pontiac GTO 04-06 LS1 to 3300 lbs, LS2 to 3350 lbs on 295 tire.
Effective January 1, 2022, In AS Spec Lines, Pontiac GTO (04-06) Restricted Prep., change Weight as follows: "295 tire: LS1: 3250 3300 LS2: 3300 3350"
AS Proposed Revisions to SCCA GCR 2021 Appendix M, Part 3
#30295 from ROGER EAGLETON · Rule change · TB 22-01 (2022-01 Fastrack)
neutralSMG long tube headers: Borla PN 17237 discontinued, Kooks PN 11312000 and American Racing PN MT3-05134300LSNC approved alternatives.
In SMG, Appendix M. 2. k. 7., make changes as follows: "Long Tube Headers: Borla PN 17237 with x-pipe (discontinued). Approved alternative American Racing Header PN: MT3- 0513 → 4300LSNC with x-pipe OR Kooks Header PN: 1131 → 2000 with Off-raod x-pipe."
AS specification line consolidation and correction
#31846 from American Sedan Committee · Rule change · TB 22-01 (2022-01 Fastrack)
neutralAS Mercury Capri (79-86) removed as individual spec line, merged into Ford Mustang (79-93) spec line.
In AS Spec Lines, remove Mercury Capri (79-86) individual spec line. In AS Spec Lines, Ford Mustang Incl. Cobra & Cobra R (79-93), change Model as follows: "Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86)"
AS correction of SMG specification line
#31847 from American Sedan Committee · Rule change · TB 22-01 (2022-01 Fastrack)
unclearAS Spec Mustang SMG loses 3.73 gear ratio and 355/300 mm brake specification.
In AS Spec Lines, Spec Mustang (SMG) Restricted Prep., change as follows: Gear Ratios: 3.73 Brakes: (F) 355 (R) 300
AS Alternate cylinder heads for full prep engine builds - Evaluation
#31851 from American Sedan Committee · Rule change · TB 22-01 (2022-01 Fastrack)
unclearAS Chevrolet, Pontiac, Ford full prep engines now permit alternate cylinder heads with restrictor plate ALL26180 and 1.250 inserts ALL26186 for regional competition.
In AS Spec Lines, change Notes as follows: Chevrolet/Pontiac Camaro & Firebird (82-92): "Modify the following full preparation specification lines: "Edelbrock Cylinder Head Part #s 608979, 608879 are permitted. For regional competition only, unmodified GM Performance cylinder head part #s 1930 → 0955, 1930 → 0956 may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side of the restrictor. All intake air must pass through the inserts of the restrictor plate." Chevrolet/Pontiac Camaro & Firebird (93-02): "Modify the following full preparation specification lines: "Edelbrock Cylinder Head Part #s 608979, 608879 are permitted. For regional competition only, unmodified GM Performance cylinder head part #s
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1930 → 0955, 1930 → 0956 may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side of the restrictor. All intake air must pass through the inserts of the restrictor plate." Chevrolet Camaro (10-15): "Modify the following full preparation specification lines: "Edelbrock Cylinder Head Part #s 608979, 608879 are permitted. For regional competition only, unmodified GM Performance cylinder head part #s 1930 → 0955, 1930 → 0956 may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side of the restrictor. All intake air must pass through the inserts of the restrictor plate." Ford Mustang Incl. Cobra & Cobra R (79-93): "Edelbrock Cylinder Head Part #s 602579, 602479 are permitted. For regional competition only, unmodified Ford Performance cylinder head part #s M-6049-Z304DA7, M-6049-Z304D may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side of the restrictor. All intake air must pass through the inserts of the restrictor plate." Ford Mustang Including Cobra 94-04: "Edelbrock Cylinder Head Part #s 602579, 602479 are permitted. For regional competition only, unmodified Ford Performance cylinder head part #s M-6049-Z304DA7, M-6049-Z304D may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side of the restrictor. All intake air must pass through the inserts of the restrictor plate." Ford Mustang GT (05- 14): "Edelbrock Cylinder Head Part #s 602579, 602479 are permitted. For regional competition only, unmodified Ford Performance cylinder head part #s M-6049-Z304DA7, M-6049-Z304D may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side of the restrictor. All intake air must pass through the inserts of the restrictor plate."
neutralAS allows Hoosier W2 tyre option in addition to R7, R6, WET/H20.
In AS, GCR section 9.1.6.D.6.b.4, add as follows: "Hoosier R7 or R6 or WET/H20 or W2"
AS correction of Dodge Challenger specification line
#33151 from American Sedan Committee · Rule change · TB 22-10 (2022-10 Fastrack)
neutralAS Dodge Challenger 08-20 adds two transmission ratio options: 2.97, 2.10, 1.45, 1.00, 0.74, 0.50 or 2.26, 1.58, 1.19, 1.00, 0.77, 0.63.
Race Memo 22-05 Effective 09/01/22: In AS, Spec Lines, Dodge Challenger (08-20), add transmission ratios as follows: "2.97, 2.10, 1.45, 1.00, 0.74, 0.50 or 2.26, 1.58, 1.19, 1.00, 0.77, 0.63"
AS Crate Motor Part Numbers
#32944 from Sam Daniels · Rule change · TB 23-08 (2023-08 Fastrack)
neutralAS crate motor part number specified: GM Performance CT400 P/N 19370604 engine assembly for GM vehicles.
In AS, GCR Section 9.1.6.F.2., change as follows: "GM Performance parts CT400 P/N-1937 → 0604 or 1937 → 0604 engine assembly for GM produced vehicles."
AS Request wheel size change
#33007 from Michael Kamalian · Rule change · TB 23-08 (2023-08 Fastrack)
fasterAS Spec Lines Ford Mustang GT 5.0L (15-17) max wheel size increases to 19.0 inches.
In AS Spec Lines, Ford Mustang GT 5.0l (15-17) Restricted Preparation, change Notes as follows: "Max. Wheel Size: Dia.18.0 19.0 inches."
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Andrew McDermid, James Jost, Michael Lavigne, Evan Pecore, Ross Murray, Michael Kamalian, Philip Smith, Dylan Licklider, Roger Eagleton, Stephen Ott, Lynne Griffiths, Thomas J Ellis, Tim White
AS Alternative Upper Front Control Arms for Dodge Challenger
#33352 from Clark Cambern · Rule change · TB 23-08 (2023-08 Fastrack)
neutralAS Dodge Challenger 5.7L/6.1L/6.4L V8 now permits SPC-66045 alternate front upper control arms.
In AS SPEC Lines, Dodge Challenger (08-20) Restricted Preparation 5.7L, 6.1L, or 6.4L V8 (Iron block, Aluminum heads), 2 valves/cylinder, change Notes as follows: "SPC-66045 Alternate front upper control arms are permitted."
AS Front Brake Caliper Adapters for Dodge Challenger
#33353 from Clark Cambern · Rule change · TB 23-08 (2023-08 Fastrack)
neutralAS Dodge Challenger 5.7L/6.1L/6.4L V8 allows alternate front brake caliper adapters for updated or backdated components.
In AS SPEC Lines, Dodge Challenger (08-20) Restricted Preparation 5.7L, 6.1L, or 6.4L V8 (Iron block, Aluminum heads), 2 valves/cylinder, change Notes as follows: "Stock brakes or alternate Dodge brakes (Part numbers: front caliper (0517 → 5106 (R) and 0517 → 5107 (L); rear caliper (R1542564 (R) and R1542565 (L))) may be used with the brake rotor sizes listed in this specification line. Alternate brackets may be used to facilitate updated/backdated components."
AS Request to Classify 1970-1981 Camaro and Firebird in AS
neutralChevrolet Camaro, Pontiac Firebird 70-81 Full Prep classified AS at 3400-3600 lbs with 250 lb weight reduction.
In AS Spec Lines, classify Chevrolet Camaro, Pontiac Firebird (70-81) Full Prep as follows: AS Wheelbase Gear Ratios Std. (or Alt.) Brakes (Max) (in/mm) Weight (lbs) Notes:
A specification table follows in the original; it is not shown here.
Applies to Chevrolet Camaro on this page: Daniel Richardson, Philip Smith, John Heinricy, Kyle Gilbert, Andy Schniedermeyer, Phillip Waters, Kelly Lubash, David Henderson, Curt Faigle, Douglas Cross, Tom Brown
Applies to Pontiac Firebird on this page: Amy Aquilante, Kyle Jones, Beth Aquilante
AS Fuel Cell 12
#34194 from Clark Cambern · Rule change · TB 24-03 (2024-03 Fastrack)
neutralAS class: multiple cars gain fuel cell placement note allowing 24 inches from standard tank, unrestricted filler location.
In AS Spec Lines, add to Notes as follows: Cadillac CTS-V (04-07): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.” Chevrolet/Pontiac Camaro & Firebird (93-02): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.” Chevrolet/Pontiac Camaro & Firebird (93-02): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with
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installation of a safety fuel cell.” Chevrolet Camaro SS (V8) (10-15): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.” Chevrolet Camaro (10-15): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.” Dodge Challenger (08-20): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.” Ford Mustang GT (05-14): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.” Ford Mustang Coupe GT (05-14): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.” Ford Mustang GT 5.0l (15-17): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.” Ford Mustang GT (05-14): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.”
AS Please Classify the 6th Gen Into AS.
#35448 from Daniel Richardson · Rule change · TB 24-03 (2024-03 Fastrack)
neutralChevrolet Camaro 16- Full Prep classified into AS at 3400 lbs with 250 lb weight reduction.
In AS Spec Lines, classify Chevrolet Camaro (16-) Full Prep as follows: AS Wheelbase Gear Ratios Std. (or Alt.) Brakes (Max) (in/mm) Weight (lbs) Notes:
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Chevrolet Camaro (16-) Full Prep 110.6 3.42, 2.28,
A specification table follows in the original; it is not shown here.
Applies to Chevrolet Camaro on this page: Daniel Richardson, Philip Smith, John Heinricy, Kyle Gilbert, Andy Schniedermeyer, Phillip Waters, Kelly Lubash, David Henderson, Curt Faigle, Douglas Cross, Tom Brown
AS spec lines
#35713 from American Sedan Committee · Rule change · TB 24-03 (2024-03 Fastrack)
neutralAS adds Ford Mustang GT 05-14 Restricted prep Engine with 62mm FPR, 3400 lbs minimum, 18-inch wheels.
In AS Spec Lines, classify Ford Mustang GT (05-14) with Restricted prep Engine as follows: AS Wheelbase Gear Ratios Std.
A specification table follows in the original; it is not shown here.
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Andrew McDermid, James Jost, Michael Lavigne, Evan Pecore, Ross Murray, Michael Kamalian, Philip Smith, Dylan Licklider, Roger Eagleton, Stephen Ott, Lynne Griffiths, Thomas J Ellis, Tim White
AS Restricted Prep Aftermarket Parts Request
#35682 from Tom Aquilante · Rule change · TB 24-04 (2024-04 Fastrack)
In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02), add to Notes the following: "For the LS1connecting rods Callies p/n CSC6100DS6A2AH, Scat rods p/n 2-1CR6100-944, GM performance rods p/n 12649190." In AS Spec Lines, Pontiac GTO (04-06), add to Notes the following: "For the LS1connecting rods Callies p/n CSC6100DS6A2AH, Scat rods p/n 2-1CR6100-944, GM performance rods p/n 12649190."
Applies to Chevrolet Camaro on this page: Daniel Richardson, Philip Smith, John Heinricy, Kyle Gilbert, Andy Schniedermeyer, Phillip Waters, Kelly Lubash, David Henderson, Curt Faigle, Douglas Cross, Tom Brown
Applies to Pontiac Firebird on this page: Amy Aquilante, Kyle Jones, Beth Aquilante
AS Allowance of 11
#35824 from American Sedan Committee · Rule change · TB 24-04 (2024-04 Fastrack)
fasterAS Cadillac CTS-V, Chevrolet Camaro SS, Dodge Challenger, Ford Mustang GT, Pontiac GTO allowed 11" wheels until 3/1/25.
In AS Spec Lines, Cadillac CTS-V (04-07), add to Notes the following: "11" wide wheels can be used until 3/1/25." In AS Spec Lines, Chevrolet Camaro SS (V8) (10-15), add to Notes the following: "11" wide wheels can be used until 3/1/25." In AS Spec Lines, Dodge Challenger (08-20), add to Notes the following: "11" wide wheels can be used until 3/1/25." In AS Spec Lines, Ford Mustang GT 5.0l (15-17), add to Notes the following: "11" wide wheels can be used until 3/1/25."
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In AS Spec Lines, Pontiac GTO (04-06), add to Notes the following: "11" wide wheels can be used until 3/1/25."
Applies to Cadillac CTS-V on this page: Thomas West
Applies to Chevrolet Camaro on this page: Daniel Richardson, Philip Smith, John Heinricy, Kyle Gilbert, Andy Schniedermeyer, Phillip Waters, Kelly Lubash, David Henderson, Curt Faigle, Douglas Cross, Tom Brown
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Andrew McDermid, James Jost, Michael Lavigne, Evan Pecore, Ross Murray, Michael Kamalian, Philip Smith, Dylan Licklider, Roger Eagleton, Stephen Ott, Lynne Griffiths, Thomas J Ellis, Tim White
AS 6th gen Camaro limited prep
#35733 from American Sedan Committee · Rule change · TB 24-05 (2024-05 Fastrack)
neutralAS Chevrolet Camaro 1LE (2016-) classified with 3600 lbs minimum weight, 60mm restrictor, 275 tires.
In AS Spec Lines, classify Chevrolet Camaro 1LE (2016-) as follows: AS Wheelbase Gear Ratios Std. (or Alt.) Brakes (Max) (in/mm) Weight (lbs.) Notes: Chevrolet Camaro, 1LE
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(2016-) 110.6 2.66,1.78,1.30,0.74,.5 (F)
A specification table follows in the original; it is not shown here.
Applies to Chevrolet Camaro on this page: Daniel Richardson, Philip Smith, John Heinricy, Kyle Gilbert, Andy Schniedermeyer, Phillip Waters, Kelly Lubash, David Henderson, Curt Faigle, Douglas Cross
neutralAS Chevrolet/Pontiac Camaro & Firebird 82-92 5.7L LS1 classified at 3200 lbs with 65mm restrictor plate required.
In AS Spec Lines, classify Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V-8 LS1 (Aluminum Block, Aluminum Heads) 2 valves per cylinder, as follows: AS Wheelbase Gear Ratios Std.
A specification table follows in the original; it is not shown here.
AS Full Prep Head
#35891 from American Sedan Committee · Rule change · TB 24-05 (2024-05 Fastrack)
neutralAS Chevrolet Camaro, Firebird, and Ford Mustang models permitted to use Flo Tek cylinder heads.
In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (82-92), add to Notes the following: "Flo Tek Head part #102-500 are permitted." In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02), add to Notes the following: "Flo Tek Head part #102-500 are permitted." In AS Spec Lines, Chevrolet Camaro (10-15), add to Notes the following: "Flo Tek Head part #102-500 are permitted." In AS Spec Lines, Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86), add to Notes the following: "Flo Tek Part # 203-500 are permitted."
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In AS Spec Lines, Ford Mustang Including Cobra 94-04, add to Notes the following: "Flo Tek Part # 203-500 are permitted." In AS Spec Lines, Ford Mustang GT (05-14), add to Notes the following: "Flo Tek Part # 203-500 are permitted."
Applies to Chevrolet Camaro on this page: Daniel Richardson, Philip Smith, John Heinricy, Kyle Gilbert, Andy Schniedermeyer, Phillip Waters, Kelly Lubash, David Henderson, Curt Faigle, Douglas Cross, Tom Brown
Applies to Pontiac Firebird on this page: Amy Aquilante, Kyle Jones, Beth Aquilante
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Andrew McDermid, James Jost, Michael Lavigne, Evan Pecore, Ross Murray, Michael Kamalian, Philip Smith, Dylan Licklider, Roger Eagleton, Stephen Ott, Lynne Griffiths, Thomas J Ellis, Tim White
AS Request for Classification of 2018-2023 mustang In
#35764 from Michael Kamalian · Rule change · TB 24-06 (2024-06 Fastrack)
neutralAS Ford Mustang GT 5.0L (2018-) classified at 3600 lbs with 60mm restrictor, Brembo BBK permitted.
AS Spec Lines, classify Ford Mustang GT 5.0L (2018-) as follows: AS Wheelbase Gear Ratios
A specification table follows in the original; it is not shown here.
AS Mustang transmission ratios
#36662 from American Sedan Committee · Rule change · TB 24-09 (2024-09 Fastrack)
unclearAS Ford Mustang GT models gain alternate transmission ratio options for 2024-09-01.
In AS Spec Lines, Ford Mustang GT (05-14) with Restricted Prep Engine, add to Notes as follows: "Alternate transmission Ratios 3.66, 2.43, 1.69, 1.32, 1.00, .68.” In AS Spec Lines, Ford Mustang GT 5.0L (2018-), add to Notes as follows: "Alternate transmission Ratios 3.24, 2.10, 1.42, 1.00, 0.81, .062."
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Andrew McDermid, James Jost, Michael Lavigne, Evan Pecore, Ross Murray, Michael Kamalian, Philip Smith, Dylan Licklider, Roger Eagleton, Stephen Ott, Lynne Griffiths, Thomas J Ellis, Tim White
Runoffs 2024 → Runoffs 2025 2024-10-01 to 2025-09-29
fasterAS Ford Mustang Coyote engines increase restrictor to 80mm from 64mm or 67mm.
In AS Spec Lines, add to Notes as follows: Ford mustang (GT 05-14): "Gen 1- 67mm Gen 2-64mm" Ford mustang (GT 05-14): "Gen 1- 67mm" Ford mustang (GT 15-17): "Gen 1- 67mm" Ford mustang (GT 94-04): "Gen 1- 67mm Gen 2-64mm" Ford mustang cobra & Cobra R Mercury Capri (79-93) (79-86): "Gen 1- 67mm Gen 2-64mm"
AS Performance Pack for 2015+ Mustang
#36867 from Michael Kamalian · Rule change · TB 25-01 (2025-01 Fastrack)
fasterAS Mustang GT 05-14 4.6L loses 300 lbs; 15-17 and 2018+ models lose 61mm and 60mm restrictors respectively.
In AS Spec Lines, Ford Mustang Coupe GT (05-14) Restricted Prep., change Notes as follows: "The 4.6L engine assembly has a weight reduction of 300 lbs. 5.0L/6spd engine/trans: track pack front and rear spoiler allowed." In AS Spec Lines, Ford Mustang Coupe GT (05-14) with Restricted Prep. engine, change Notes as follows: "Max. Wheel Size: Dia.18.0 inches. Stock brakes or alternate Ford 14” Brembo Brake (Ford Racing Kit #M-2300-S) and full prep brake package may be used. Either engine may be used. 1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Cold Air Intake allowed Charge Motion Control Valves can be blocked off and removed for firewall clearance Allow Cold Air Intake Tremec Magnum transmission may be used P/N- TUKT16901. Full Prep Transmissions rule package may also be used. Max compression ratio, 11.2:1 track pack front and rear spoiler allowed. Alternate transmission
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Ratios 3.66, 2.43, 1.69, 1.32, 1.00, .68." In AS Spec Lines, Ford Mustang GT 5.0l (15-17) Restricted Preparation, change Notes as follows: "Max. Wheel Size: Dia. 18.0 inches. Stock brakes or alternate Ford Brembo Brake caliper (Ford Racing Kit #M-2300-S) may be used. 61mm flat plate restrictor required. Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. 11” wide wheels can be used until 3/1/25. Performance pack front and rear spoiler, body kit allowed." In AS Spec Lines, Ford Mustang GT 5.0L (2018-), change Notes as follows: "Package Brembo front BBK and 380mm rotors permitted (Ford PN M-2300-V) at no weight penalty. 60mm flat plate restrictor required. 2014 Mustang GT exhaust manifolds permitted. Ford Racing oil pan #M-6675-M50BR permitted. Alternate transmission Ratios 3.24, 2.10, 1.42, 1.00, 0.81, .062. Performance pack front and rear spoiler, body kit allowed."
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Andrew McDermid, James Jost, Michael Lavigne, Evan Pecore, Ross Murray, Michael Kamalian, Philip Smith, Dylan Licklider, Roger Eagleton, Stephen Ott, Lynne Griffiths, Thomas J Ellis, Tim White
AS Gear Ratios
#37131 from Timothy White · Rule change · TB 25-01 (2025-01 Fastrack)
neutralAS class gear ratio options specified for multiple American muscle cars, including Cadillac CTS-V, Chevrolet Camaro, Ford Mustang, Dodge Challenger, and Pontiac GTO.
In AS Spec Lines, change Gear Ratios as follows: Cadillac CTS-V (04-07): "2.97, 2.07, 1.43,1.00, 0.84,0.56 or 3.01, 2.07, 1.43, 1.0, .84, .57 or 2.20, 1.64,1.28,1.00 or 2.88, 1.91, 1.33, 1.00" Chevrolet Camaro, Pontiac Firebird (70-81), Full Prep: "3.42, 2.28, 1.45, 1.00 or 2.95, 1.94, 1.34, 1.00, 0.73 or 3.35, 1.93, 1.29, 1.00, 0.61, or 2.20, 1.64,1.28,1.00 or 2.87,1.89,1.28,1.00" Chevrolet Camaro, Pontiac Firebird (70-81), Restricted Prep.: "3.42, 2.28, 1.45, 1.00 or 2.95, 1.94, 1.34, 1.00, 0.73 or 3.35, 1.93, 1.29, 1.00, 0.61, or 2.20, 1.64,1.28,1.00 or 2.87,1.89,1.28,1.00" Chevrolet/Pontiac Camaro & Firebird (82-92) Full Prep:
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"3.42, 2.28, 1.45, 1.00 or 2.95, 1.94, 1.34, 1.00, 0.73 or 3.35, 1.93, 1.29, 1.00, 0.61 or 2.20, 1.64,1.28,1.00 or 2.88, 1.91, 1.33, 1.00" Chevrolet/Pontiac Camaro & Firebird (93-02) Full Prep: "3.42, 2.28, 1.45,1.00 or 2.95, 1.94,1.34, 1.00,0.73or 3.35, 1.93,1.29, 1.00,0. 61 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 or 2.20,1.64,1.28,1.00 or 2.87,1.89,1.28,1.00,.81" Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted prep: "2.97, 2.07, 1.43, 1.00, 0.80, 0.62 or 3.36, 2.07, 1.35, 1.00, .80, .62 or 2.66, 1.78, 1.30, 1.00, 0.74, 0.50 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00" Chevrolet Camaro SS (V8) (10-15) Restricted Prep: "3.01, 2.07, 1.43, 1.0, .84, .57 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00" Chevrolet Camaro (10-15) Full Prep: "3.42, 2.28, 1.45,1.00 or 2.95, 1.94,1.34, 1.00, 0.73or 3.35, 1.93,1.29, 1.00,0. 61 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 or 2.20, 1.64,1.28,1.00 or 2.87,1.89,1.28,1.00,.81" Chevrolet Camaro (16-) Full Prep: "3.42, 2.28, 1.45,1.00 or 2.95, 1.94,1.34, 1.00, 0.73or 3.35, 1.93,1.29, 1.00,0. 61 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 or 2.20, 1.64,1.28,1.00 or 2.87,1.89,1.28,1.00,.81" Chevrolet Camaro, 1LE (16-): "2.66,1.78,1.30, 0.74,.50 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00" Dodge Challenger (08-20) Restricted Preparation 5.7L, 6.1L, or 6.4L V8 (Iron block, Aluminum heads), 2 valves/cylinder: "2.97, 2.1, 1.46, 1.00, 0.74, 0.50 or 2.26, 1.58, 1.19, 1.00, 0.77, 0.63 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00" Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86) Full Prep: "3.07, 1.72, 1.00, 0.70 or 2.95, 1.94, 1.34, 1.00, 0.63 or 3.35, 1.99, 1.33, 1.00, 0.68 or 2.87 1.89 1.28 1.00 0.81" Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86) with Restricted Prep Engine: "2.95, 1.94, 1.34,1.00, 0.63 or 3.35,1.99,1.33, 1.00, 0.69 or 2.88, 1.91, 1.33, 1.00 or 3.27,1.98, 1.34, 1.00, 0.68, 3.66, 2.43, 1.69, 1.32, 1.00, .68. or 2.87,1.89,1.28,1.00,.81" Ford Mustang Including Cobra 94-04 Full Prep: "3.07, 1.72, 1.00, 0.70 or 2.95, 1.94, 1.34, 1.00, 0.63 or 3.35, 1.99, 1.33, 1.00, 0.68 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 or 2.20, 1.64,1.28,1.00 or 2.87 1.89 1.28 1.00 0.81" Ford Mustang Cobra and GT 94-95 (Restricted Prep): "3.35, 1.99, 1.33, 1.00, 0.68 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00" Ford Mustang including Cobra 96-04 (Restricted Prep) 4.6L two and four valve motor: "3.35, 1.99, 1.33, 1.00, 0.68 or 3.27, 1.98, 1.34, 1.00, 0.67 or 3.37, 1.99, 1.33, 1.00, 0.68 or 3.38, 2.00, 1.32, 1.00, 0.68 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00" Ford Mustang GT (05-14) Full Prep: "3.38, 2.00, 1.32, 1.00, 0.68 or 3.66, 2.43, 1.69,1.32, 1.00, 0.65 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00" Ford Mustang GT 5.0l (15-17) Restricted Preparation: "3.66, 2.43, 1.69,1.32, 1.00, .65 or 4.69, 2.98,2.14, 1.76,1.52, 1.27,1.00, 0.85, 0.68, 0.63, or 3.24, 2.10, 1.42, 1.00, 0.81, .062. or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00" Ford Mustang GT 5.0L (2018-) Restricted Preparation: "2.97, 2.07, 1.43, 1.00, 0.84, 0.57 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00" Pontiac GTO (04-06) Restricted Prep. "2.97, 2.07, 1.43, 1.00, 0.84, 0.57 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
AS ECU specs for LS engine
#37208 from Gary Mathews · Rule change · TB 25-01 (2025-01 Fastrack)
In AS SPEC LINES, Cadillac CTS-V (04-07) Restricted Prep., change Notes as follows: "Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Tremec TR6060 Transmission with 3.0 1, 2.07, 1.43, 1.0, .84, .57 ratios permitted. 11” wide wheels can be used until 3/1/25. Any ECM may be used." In AS SPEC LINES, Chevrolet Camaro, Pontiac Firebird (70-81) Restricted Prep ., add to Notes as follows: "Any ECM may be used." In AS SPEC LINES, Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V-8 LS1, add to Notes as follows:
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"Any ECM may be used." In AS SPEC LINES, Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted Prep.5.7L V-8 LT1, add to Notes as follows: "Any ECM may be used." In AS SPEC LINES, Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted Prep. 5.7L V-8 LT1; 98-02 , change Notes as follows: "5.7L LS1: GM Performance Parts camshaft Kit P/N-19355738 is permitted. Cylinder Bore, 99 mm; Stroke, 92 mm; Intake Valve Diameter, 50.8; Exhaust Valve Diameter, 39.4 mm; Throttle Body Bore, 75 mm; SLP Intake Lid (SLP part number 21044 (98-99) and 21045 (00-02)) is permitted. Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. 1-3/4 headers allowed. For the LS1connecting rods Callies P/NCSC6100DS6A2AH, Scat rods P/N2-1CR6100-944, GM performance rods P/N12649190. Any ECM may be used." In AS SPEC LINES, Chevrolet Camaro SS (V8) (10-15) Restricted Prep., add to Notes as follows: "Any ECM may be used."
Applies to Cadillac CTS-V on this page: Thomas West
Applies to Chevrolet Camaro on this page: Daniel Richardson, Philip Smith, John Heinricy, Kyle Gilbert, Andy Schniedermeyer, Phillip Waters, Kelly Lubash, David Henderson, Curt Faigle, Douglas Cross, Tom Brown
Applies to Pontiac Firebird on this page: Amy Aquilante, Kyle Jones, Beth Aquilante
AS Race memo
#37902 from American Sedan Committee · Rule change · TB 25-03 (2025-03 Fastrack)
unclearAS Spec Lines removes ECM flexibility restriction from five Cadillac and Chevrolet/Pontiac V8 models.
unclearAS Flotek Head plunge cut dimensions figure updated in GCR Section 9.1.6.
In GCR, Section 9.1.6., replace Figure 1 Value Seat Cutting Dimensions with the following:
AS Notes clean up
#37693 from American Sedan Committee · Rule change · TB 25-04 (2025-04 Fastrack)
neutralAS class notes cleanup: multiple Camaro, Firebird, CTS-V, Challenger, Mustang specs and fuel cell/ECM/head restrictions removed.
In AS Spec Lines, change/add to Notes as follows: Cadillac CTS-V (04-07): "Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Any ECM maybe used. The Drive Shaft Shop, Axle shaft part #'s 510220/510221 permitted." Chevrolet Camaro, Pontiac Firebird (70-81) Full Prep: "Engine built to A/S Build Sheet specifications with the following: Head Casting #s: 14101081, 14014416 Port Volume (Max.): 081 casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 250 lb. weight reduction. Edelbrock Cylinder Head Part
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#s 608979, 608879." Chevrolet Camaro, Pontiac Firebird (70-81) Restricted Prep.: "Any ECM maybe used." Chevrolet/Pontiac Camaro & Firebird (82-92) Full Prep.: "Engine built to A/S Build Sheet specifications with the following: Head Casting #s: 14101081, 14014416 Port Volume (Max.): 081 cast¬ing: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 250 lb weight reduction. Edelbrock Cylinder Head Part #s 608979, 608879 are permitted. For regional competition only, unmodified GM Performance cylinder head part #s 19300955, 19300956 may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side of the restrictor. All intake air must pass through the inserts of the restrictor plate. Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted. Flo Tek Head part #102-500 are permitted." Chevrolet/Pontiac Camaro & Firebird (82-92) Restricted prep engine: "Any ECM maybe used." Chevrolet/Pontiac Camaro & Firebird (93-02) Full Prep: "Engine built to A/S Build Sheet specifications with the following: Head Casting #’s: 14101081, 14014416; Port Volume (Max.): 081 casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 250 lb weight reduction. Edelbrock Cylinder Head Part #’s 608979, 608879 are permitted. For regional competition only, unmodified GM Performance cylinder head part #s 19300955, 19300956 may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side of the restrictor. All intake air must pass through the inserts of the restrictor plate. Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted. Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Flo Tek Head part #102-500 are permitted." Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted Prep: "Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Any ECM maybe used." Chevrolet Camaro SS (V8) (10-15) Restricted Prep: "Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Any ECM maybe used." Chevrolet Camaro (10-15) Full Prep: "Engine built to A/S Build Sheet specifications with the following: Head Casting #’s: 14101081, 14014416; Port Volume (Max.): 081 casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 200 lb weight reduction. Edelbrock Cylinder Head Part #’s 608979, 608879 are permitted. Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted. Fuel cells must be located within 24 inches of the standard tank. The 24-inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Flo Tek Head part #102-500 are permitted. Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell." Chevrolet Camaro (16-) Full Prep: "Engine built to A/S Build Sheet specifications with the following: Head Casting #’s: 14101081, 14014416; Port Volume (Max.): 081 casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 200 lb weight reduction. Edelbrock Cylinder Head Part #’s 608979, 608879 are permitted, Flo Tek Head part #102-500 are permitted." Chevrolet Camaro, 1LE (16-): "60mm flat plate restrictor required. Any ECM maybe used." Dodge Challenger (08-20) Restricted Preparation: "80mm flat plate restrictor is required on the 6.4L engine. Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell." Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86) Full Prep: "Engine built to A/S Build Sheet specifications with the following: Head Casting #s: F3ZE AA (GT40), F1ZE-AA (GT-40), F77E-AA (GT- 40P), Port Volume (Max.): 143.00cc IN/54.00cc EX (GT-40 & GT-40P) with a 250 lb weight reduction. Edelbrock Cylinder Head Part #s 602579, 602479 are permitted. For regional competition only, unmodified Ford Performance cylinder head part #s M-6049-Z304DA7, M-6049-Z304D may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side of the restrictor. All intake air must pass through the inserts of the restrictor plate. Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted. Flo Tek Part # 203-500 are permitted." Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri(79-86) with Restricted Prep Engine: "62mm flat plate restrictor is required. Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted." Ford Mustang Including Cobra 94-04 Full Prep: "Engine built to A/S Build Sheet specifications with the following: Head Casting #s: F3ZE AA (GT40), F1ZE-AA (GT-40), F77E-AA (GT- 40P), Port Volume (Max.): 143.00cc IN/54.00cc EX (GT-40 & GT-40P) with a 250 lb weight reduction. Edelbrock Cylinder Head Part #s 602579, 602479 are permitted. For regional competition only, unmodified Ford Performance cylinder head part #s M-6049-Z304DA7, M-6049-Z304D may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side of the restrictor. All intake air must pass through the inserts of the restrictor plate. Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted. Flo Tek Part # 203-500 are permitted." Ford Mustang GT (94-04) with Restricted Prep Engine: "MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted." Ford Mustang Cobra and GT 94-95(Restricted Prep): "1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Alternate transmission Ratios 3.66, 2.43, 1.69, 1.32, 1.00, .68. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted." Ford Mustang including Cobra 96-04 (Restricted Prep): "1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Alternate transmission Ratios 3.66, 2.43, 1.69, 1.32, 1.00, .68. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted." Ford Mustang Coupe GT (05-14) Restricted Prep.: "1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Alternate transmission Ratios 3.66, 2.43, 1.69, 1.32, 1.00, .68. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted. MT82 6 speed is permitted." Ford Mustang GT (05-14) with Restricted Prep Engine: "1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Alternate transmission Ratios 3.66, 2.43, 1.69, 1.32, 1.00, .68. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted. MT82 6 speed is permitted." Ford Mustang GT 5.0l (15-17) Restricted Preparation: "61mm flat plate restrictor required. Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted." Ford Mustang GT 5.0L (2018-): "60mm flat plate restrictor required. MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."
AS Errors and Omission
#38055 from American Sedan Committee · Rule change · TB 25-05 (2025-05 Fastrack)
slowerAS Ford Mustang GT 5.0L (15-17) flat plate restrictor reduced from 67mm to 64mm.
In AS Spec Lines, Ford Mustang GT 5.0l (15-17), Flat Plate Restrictor Size, change as follows: "67mm 64mm"
AS Request to Add LS1/LS6 Intakes for 5.3L Truck Engine EnO
#38197 from Jim Clark · Rule change · TB 25-05 (2025-05 Fastrack)
neutralAS LS1/LS6 5.3L truck engine gains four approved intake part numbers: 12561269, 88894095, 89017363, 89017364.
In GCR, Section 9.1.6.F., add the following to Intake Part #’s: "17113697, 19418185, 89017230, 89017363, 89017364, and 89017365, 12561269 and 88894095"
AS Errors and Omissions
#38234 from American Sedan Committee · Rule change · TB 25-06 (2025-06 Fastrack)
neutralAS Ford Mustang GT 05-14 Restricted Prep Engine gains alternative gear ratios: 3.66, 2.43, 1.69, 1.32, 1.00, .65
In AS Spec Lines, Ford Mustang GT (05-14) with Restricted Prep Engine, add to Gear Ratios the following: "or 3.66, 2.43, 1.69, 1.32, 1.00, .65"
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Andrew McDermid, James Jost, Michael Lavigne, Evan Pecore, Ross Murray, Michael Kamalian, Philip Smith, Dylan Licklider, Roger Eagleton, Stephen Ott, Lynne Griffiths, Thomas J Ellis, Tim White
AS RE: Previous Letter 37695 Update
#38245 from Michael Kamalian · Rule change · TB 25-07 (2025-07 Fastrack)
fasterAS Ford Mustang GT 5.0 2018- weight reduced from 3600 to 3525 lbs.
In AS Spec Lines, Ford Mustang GT 5.0 (2018-), change Weight as follows: "3600 3525"
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Thomas J Ellis
Runoffs 2025 → Runoffs 2026 2025-09-29 to 2026-09-28
AS Cadillac CTS-V BOP Weight Change
#38640 from Alex Lozano · Rule change · TB 25-09 (2025-09 Fastrack)
In AS Spec Lines, Cadillac CTS-V (04-07) Restricted Prep., change Weight as follows: "(Effective 11/1/2025) 3450 3400"
Applies to Cadillac CTS-V on this page: Thomas West
AS 1994 Mustang Spec Line Request
#39104 from Barry Borgschatz, Jr · Rule change · TB 25-12 (2025-12 Fastrack)
unclearAS Ford Mustang GT 94-04 Restricted Prep Engine now permits Ford Motorsport M-6250-F303 camshaft.
In AS Spec Lines, Ford Mustang GT(94-04) with Restricted Prep Engine, add to notes the following: "Ford Motorsport #M-6250-F303 camshaft is permitted."
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Andrew McDermid, James Jost, Michael Lavigne, Evan Pecore, Ross Murray, Michael Kamalian, Philip Smith, Dylan Licklider, Roger Eagleton, Stephen Ott, Lynne Griffiths, Thomas J Ellis, Tim White
AS Restrictor Plate Change for Gen 2 Ford Coyote Engine
#39501 from American Sedan Committee · Rule change · TB 26-01 (2026-01 Fastrack)
slowerAS Ford Mustang Restricted Prep engines lose 3 mm restrictor plate, from 64 mm to 61 mm.
In AS Spec Lines, change Restrictor as follows: Ford Mustang Incl. Cobra and Cobra R (79-93) and Mercury Capri (79-86) with Restricted Prep Engine: "64 mm 61 mm" Ford Mustang GT (94-04) with Restricted Prep Engine: "64 mm 61 mm" Ford Mustang Coupe GT (05-14) Restricted Prep 5.0L/6 speed 4 valves per cylinder: "64 mm 61 mm" Ford Mustang GT (05-14) with Restricted Prep Engine: "64 mm 61 mm" Ford Mustang GT 5.0L (15-17) Restricted Preparation: "64 mm 61 mm"
AS Edelbrock manifold (& timing kit) to Chevy LS Spec Lines Request
#39055 from Jason Smith · Rule change · TB 26-01 (2026-01 Fastrack)
neutralAS Chevy LS adds Edelbrock Performer RPM 71187 intake manifold with MSD 6014 ignition and 4776 Holly carburetor as spec line option.
In GCR, Section 9.1.6.D.2.h.2., add the following: "(Effective 2/1/2026) i. Weight based on full preparation chassis choice spec line for GM LM7 5.3L Carburetor Option: Must use the full prep 4776 holly carburetor and spacer gasket Edelbrock Performer RPM 71187 intake manifold MSD 6014 ignition box (Edelbrock part # kit 7118)"
AS Re-Organization of AS Spec lines for 2026
#39887 from American Sedan Committee · Rule change · TB 26-03 (2026-03 Fastrack)
neutralAS class Spec Lines reorganized for 2026; old table format with chassis, engine, weight, tire, and brake data deleted and moved to main rules and build sheets.
This AS Spec Lines re-organization simplifies the Spec Lines for all drivers. This version gives the chassis information on what engines can be put in their cars. It removes information that is now repeated in the ruleset and adds engine/weight combos as well as wheelbase/tire size information. The Notes in the Spec Lines have been reviewed to remove information now listed in the engine build sheets and retain information pertinent to the chassis selected. Where there is nothing in the notes, it is not an error. It just means everything a driver needs is now in the main rules or the build sheets. In AS Spec Lines, delete current Spec Line in its entirety as follows:
A specification table follows in the original; it is not shown here.
AS Header Information Update for EFI Engine Build Sheets
#39886 from American Sedan Committee · Rule change · TB 26-04 (2026-04 Fastrack)
In AS EFI Engine Build Sheets, add to notes as follows: GM LS1, LS2, LS6: "Any three stage dry sump is permitted. 1-3/4” diameter headers permitted." GM LS3, LT1: "Any three stage dry sump is permitted." Ford 4.6L 2V and Ford 4.6L 3V: "Headers as specified in the Full Prep American Sedan rules may be used. Ford Performance camshaft kit P/N M-6550-3V may be used." Ford Gen 1, 2, and 3 5.0L: "MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted." Mopar 5. 7L and 6.1L: "1-3/4” diameter headers permitted."
AS Errors and Omissions
#39933 from American Sedan Committee · Rule change · TB 26-04 (2026-04 Fastrack)
fasterAS Ford Mustang GT 5.0L Gen3 Coyote loses 75 lbs, to 3525; oil catch tanks now required; LT1 Camaro/Firebird build sheet added.
In GCR, Section 9.1.6.D.5.b.1, change as follows: "Full Preparation All cars only:" In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02), change as follows: Spec Line Engine/Weight (lbs.): "(1992-1997) LT1 5.7L/3200" Flat Plate Restrictor Size Column: "N/A" In GCR Section 9.1.6.F., add Build Sheet as follows: Engine GM LT1 5.7L (1992-97) OEM engine as manufactured for General Motors 93-97 Camaro
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Engine Block Casting 10125327 Cylinder Head Casting 10128374,12551561, 10207643 Port Volume Bore 4.040in Stroke 3.480in Max Rod Length 5.7” Valve Size Int.1.940” / Ex.1.60” Cam Lift .460 Intake / .460 Exhaust Cam Timing/Duration C/L 117deg Duration @.05 Lift Deck Height 9.00 Compression Ratio 10.4:1 Rocker Arm Ratio 1.5:1 Intake Part #’S - Throttle Body Bore 48mm (twin) Restrictor Plate - Fuel Injector Part# 17087325, 354119 Headers 1-3/4 In AS Spec Lines, GM Spec Lines (Cadillac, Chevrolet, Pontiac) change Spec Lines Engine/Weight (lbs.) as follows: "LT1/6.2L/3600" In GCR, Section 9.1.6.D.1.i. Oiling system, change as follows: "6. Oil catch tanks are permitted required. All catch cans must be ventilated to the outside. All engine breathers or vapor recirculation lines, if disconnected, shall vent to a catch tank of one (1) quart minimum capacity. Such catch tanks shall not be mounted in the driver/passenger compartment." In AS Spec Lines, Pontiac GTO (04- 06), change Wheelbase (in.)/Tire Column: "109.8/275" In AS Spec Lines, Ford Mustang GT 5.0L (15-23), Engine/Weight (lbs.) Column: "Gen3Coyote/3600 3525"
Applies to Chevrolet Camaro on this page: Daniel Richardson, Philip Smith, John Heinricy, Kyle Gilbert, Andy Schniedermeyer, Phillip Waters, Kelly Lubash, David Henderson, Curt Faigle, Douglas Cross, Tom Brown
Applies to Pontiac Firebird on this page: Amy Aquilante, Kyle Jones, Beth Aquilante
AS Clarification for LM7 Holley Carburetor
#40167 from American Sedan Committee · Rule change · TB 26-06 (2026-06 Fastrack)
neutralAS LM7 5.3L must use full prep Holley carburetor as described in 9.1.6.D.c.1, clarifying specification.
In GCR, Section 9.1.6., ENGINE GM LM7 5.3L build sheet, change Notes as follows: "Must use the full prep 4776 holly carburetor and spacer gasket Holley carburetor as described in 9.1.6.D.c.1."
AS Change in 9.1.6.D.4.d.5 in Suspension Mounting Points
#40094 from American Sedan Committee · Rule change · TB 26-08 (2026-08 Fastrack)
unclearAS rear trailing arms no longer required to maintain stock length.
In GCR, Section 9.1.6.D.4.d.5., change as follows: 'Vehicles with rear trailing arms may replace OEM arms with tubular arms. Arms must maintain stock length and serve Arms must serve no other purpose than locating rear axle assembly."
AS Re-Add 4.6L 4v 96-04 Mustang Cobra
#40239 from Dan Hardison · Rule change · TB 26-08 (2026-08 Fastrack)
neutralAS Ford Mustang GT 4.6L 4-valve Cobra re-added at 3200 lbs minimum weight.
In AS Spec Lines, Ford Mustang GT (94-04), change Engine/Weight (lbs.) as follows: "4.6L 2, or 3 or 4 valve/3200"
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Andrew McDermid, James Jost, Michael Lavigne, Evan Pecore, Ross Murray, Michael Kamalian, Philip Smith, Dylan Licklider, Roger Eagleton, Stephen Ott, Lynne Griffiths, Thomas J Ellis, Tim White
AS Errors and Omissions
#40532 from American Sedan Committee · Rule change · TB 26-08 (2026-08 Fastrack)
slowerAS Ford Mustang Coupe GT 05-14 Gen3 Coyote minimum weight increases to 3400 lbs.
In AS Spec Lines, Ford Mustang Coupe GT (05-14), change Engine/Weight (lbs.) as follows: "Gen3Coyote/3100 3400"
Applies to Ford Mustang GT on this page: Gregory Eaton, Thomas West, Kent Biddinger, Mark Wheaton, Matt Regan, Andrew McDermid, James Jost, Michael Lavigne, Evan Pecore, Ross Murray, Michael Kamalian, Philip Smith, Dylan Licklider, Roger Eagleton, Stephen Ott, Lynne Griffiths, Thomas J Ellis
AS 2016+ Camaro Spec Line Full Prep
#39646 from Daniel Richardson · Rule change · TB 26-09 (2026-09 Fastrack)
neutralAS Camaro 16- 1LE front splitter permitted, passenger side head minimum removed, specific motor mount kit allowed.
In AS Spec Lines, Chevrolet Camaro (16-), change Notes as follows effective 9/1/26: "Max wheel Dia, 20.0 inches. ZL1 1LE front splitter kit 85837791 Front Fascia and gri ll is permitted . Belt tensioner part number GM 12569301 allowed. Full prep: Engine/transmission installation procedure as provided by SCCA Road Racing Technical Department shall be utilized. Passenger sideFull Prep head must be 2-5/8 min from the firewall. Motor Mounts: BMR Motor Mount Kit MM010H, JEGS LT1 conversion plate 555-50597. Counter sink M10x1.5 x 30mm bolts (4), counter sink 3/8 - 16 x1 bolts (3). #1 Spark plug cannot fall behind the centerline of Front Hubs."
Applies to Chevrolet Camaro on this page: Daniel Richardson, Philip Smith, John Heinricy, Kyle Gilbert, Andy Schniedermeyer, Phillip Waters, Kelly Lubash, David Henderson, Curt Faigle, Douglas Cross, Tom Brown
AS Consideration of Pirelli P Zero Trofeo Track for AS Competition
neutralAS class adds Pirelli P Zero Trofeo Track as approved tire option for competition starting 2026.
In GCR, Section 9.1.6.D.6.b.4., add the following effective 9/1/26: "Additional tires may be requested for consideration by the ASAC and may be introduced within rule change timing cadence. Pirelli PZERO TROFEO TRACK."
What the rules allowed changed as listed; this does not say what any particular car ran.