This track has been raced on 4 configurations (The Circuit, 2.57 mi; 19, 2.92 mi; 1.83 mi; 3.02 mi). Laps on different configurations are not comparable, so only events on the 2.57 mile layout are shown; switch above to see the others.
5 laps are left out as timing errors (far too short to be a lap of this track). The rest of those sessions, sectors included, is used.
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 → IM1 0.65 mi
S2 IM1 → IM2 0.75 mi
S3 IM2 → SF 1.17 mi
Spd In → Out 0.03 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
Van Diemen RF05
FC
1
1:11.935Peter West
1:11.935Peter West
Van Diemen RF99
FC
1
1:12.478Troy Shooter
1:12.478Troy Shooter
Van Diemen DP08
FC
1
1:14.576Gary Peterson
1:14.576Gary Peterson
Van Diemen RF01
FC
2
1:45.137Robert Armington
1:45.137Robert Armington
1:45.314Robert Armington
143.5Robert Armington
29.050Paul MacFarlane
30.109Robert Armington
45.728Robert Armington
Van Diemen DP-08
FC
1
1:45.137Robert Armington
1:45.137Robert Armington
1:45.314Robert Armington
143.5Robert Armington
29.106Robert Armington
30.109Robert Armington
45.728Robert Armington
Van Diemen RF01
FC
1
1:48.522Paul MacFarlane
1:50.067Paul MacFarlane
1:48.522Paul MacFarlane
114.4Paul MacFarlane
29.050Paul MacFarlane
31.137Paul MacFarlane
48.294Paul MacFarlane
Van Diemen RF96
FC
1
1:47.570Shawn Sarbacker
1:47.741Shawn Sarbacker
1:47.570Shawn Sarbacker
146.2Shawn Sarbacker
29.351Shawn Sarbacker
30.778Shawn Sarbacker
47.076Shawn Sarbacker
Van Diemen RF97
FC
1
1:47.993Bill Wallschlaeger
1:51.040Bill Wallschlaeger
1:47.993Bill Wallschlaeger
147.5Bill Wallschlaeger
29.638Bill Wallschlaeger
30.895Bill Wallschlaeger
47.233Bill Wallschlaeger
Swift Db6
FF
2
1:49.259Edward Erlandson
1:55.247Johnnie Crean
1:54.993Johnnie Crean
124.5Johnnie Crean
31.358Johnnie Crean
32.841Johnnie Crean
47.766Edward Erlandson
SWIFT DB-6 Honda
FF
1
1:49.259Edward Erlandson
47.766Edward Erlandson
Swift Db6
FF
1
1:54.993Johnnie Crean
1:55.247Johnnie Crean
1:54.993Johnnie Crean
124.5Johnnie Crean
31.358Johnnie Crean
32.841Johnnie Crean
50.291Johnnie Crean
Chevrolet
GTX
2
1:49.569Bob Blizzard
124.8Michael Arnheiter
29.869Bob Blizzard
31.704Bob Blizzard
47.478Bob Blizzard
Chevrolet
GTX
1
1:49.569Bob Blizzard
124.2Bob Blizzard
29.869Bob Blizzard
31.704Bob Blizzard
47.478Bob Blizzard
Chevrolet Camero
GTX
1
1:59.339Michael Arnheiter
124.8Michael Arnheiter
32.354Michael Arnheiter
33.705Michael Arnheiter
50.741Michael Arnheiter
Ford Mustang
AS/GTX
6
1:49.596Rob Scholl
1:56.445Roger Eagleton
1:49.596Rob Scholl
135.2Ross Murray
30.070Rob Scholl
31.820Rob Scholl
46.910Rob Scholl
Ford Mustang GT4
GTX
1
1:49.596Rob Scholl
1:49.596Rob Scholl
116.4Rob Scholl
30.070Rob Scholl
31.820Rob Scholl
46.910Rob Scholl
Ford Mustang
AS
4
1:55.849Roger Eagleton
1:56.445Roger Eagleton
1:55.849Roger Eagleton
135.2Ross Murray
31.659Roger Eagleton
33.571Roger Eagleton
50.288Ross Murray
Ford Mustang FR500S
AS
1
1:58.795Pratt Cole
1:59.911Pratt Cole
1:58.795Pratt Cole
103.3Pratt Cole
32.531Pratt Cole
33.997Pratt Cole
51.550Pratt Cole
Piper DL7-Honda
FF
1
1:51.118Eric Poulsen
1:52.044Eric Poulsen
1:51.118Eric Poulsen
114.7Eric Poulsen
30.276Eric Poulsen
31.650Eric Poulsen
48.818Eric Poulsen
SWIFT DB-
FF
1
1:53.098Edward Erlandson
1:53.098Edward Erlandson
1:54.741Edward Erlandson
133.7Edward Erlandson
30.951Edward Erlandson
32.299Edward Erlandson
49.791Edward Erlandson
Porsche 981 Cayman
GTX
1
1:54.892Moze Cowper
1:54.892Moze Cowper
1:55.330Moze Cowper
146.0Moze Cowper
31.377Moze Cowper
32.983Moze Cowper
49.706Moze Cowper
Van Diemen RF
FC
1
1:58.213Greg Pizzo
2:10.106Greg Pizzo
1:58.213Greg Pizzo
127.3Greg Pizzo
32.045Greg Pizzo
34.162Greg Pizzo
51.126Greg Pizzo
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
Cal Club 2023 → Cal Club 2024 2023-02-24 to 2024-02-23
FF Add Fast Forward Part Numbers for Honda Fit Engine
wordingFF Honda Fit engine adds Fast Forward part number alternatives for intake, exhaust, oil system, and scavenge pump components.
As printed in Fastrack
In FC/FF, GCR section 9.1.1.B.14.a.6, change as follows: "For all Honda part numbers in these specifications, superc seding part numbers are considered equivalent. In FC/FF, GCR section 9.1.1.B.14.f.5, change as follows: "Cylinder head breather restrictor must be used as supplied by HPD or Fast Forward, unmodified.: HPD PN: 15262-F21S-A200; Fast Forward PN: FF200-503." In FC/FF, GCR section 9.1.1.B.14.k.2, change as follows: "The upper manifold, air box and throttle body assembly must be used as delivered from Honda, HPD, or Fast Forward as noted below."
Show 35 more lines
In FC/FF, GCR section 9.1.1.B.14.k.2, insert as follows: "a. Intake manifold: HPD PN: 17210-F21S-A210; Fast Forward PN: FF200-201. b. Throttle body: Honda Fit: PN: 16400ZZ5024; HPD PN: 16400ZZ5024; Fast Forward PN: FF200-104. c. Throttle lever: HPD PN: 17330-F21S-A210; Fast Forward PN: FF200-101." In FC/FF, GCR section 9.1.1.B.14.k.3, change as follows: "All gaskets and sensors utilized on the inlet manifold from head to throttle body must be Honda Fit OEM, or HPD supplied or Fast Forward as noted below. a. Gasket In. manifold: HPD PN: 17105-RB0-004, Honda Fit OEM. b. Gasket, EGR chamber cover: HPD PN: 17146-RB0-004, Honda Fit OEM. c. Gasket In. port: HPD PN: 17115-RB0-007, Honda Fit OEM. d. Gasket, restrictor: HPD PN: 17399-F21S-A200, (2 required) HPD; Fast Forward PN: FF200-109. Two required." In FC/FF, GCR section 9.1.1.B.14.k.5, change as follows: "The Honda Fit engine is required to have an HPD supplied air inlet restrictor supplied by HPD or Fast Forward: HPD PN: 17344- F21S-A201; Fast Forward PN: FF200-110, with internal diameter of 30.5mm and thickness of 3.175mm (0.125 inches) correctly installed within the intake system." In FC/FF, GCR section 9.1.1.B.14.m.1, change as follows: "The exhaust manifold must be as supplied by HPD or Fast Forward:, HPD part # PN: 18150-F21S-A200 or # PN: 1818 50-F21S-B200; Fast Forward PN: FF500-001 or PN: FF500-002." In FC/FF, GCR section 9.1.1.B.14.n.1, change as follows: "The oil pan, baffle plate, and scavenge pump filter fittings must be as supplied by HP or Fast Forward as noted below. No modifications are permitted. a. Oil pan: HPD PN: 11200-F21S-A210 or PN: 11200-F21S-C240; Fast Forward PN: FF100-201A or PN: FF100-201B. b. Oil pan baffle plate: HPD PN: 11221-F21S-A210; Fast Forward PN: FF100-202. c. Oil scavenge pump filter fittings (2 required): HPD PN: 15180-F21S-A210; Fast Forward PN: FF100-204." In FC/FF, GCR section 9.1.1.B.14.n.3, change as follows: "The scavenge pump and internal scavenge pump parts must be as supplied from HPD or Fast Forward as noted below." In FC/FF, GCR section 9.1.1.B.14.n.3, change as follows: "b. Rotor outside diameter: HPD 44.400mm (1.748 inches):; Fast Forward 40.640mm (1.600 inches). c. Scavenge pump rotor set: HPD PN: 15450-F21S-A20; Fast Forward PN: FF100-110. d. Oil pump: HPD PN: 15100-F21S-A200; Fast Forward PN: FF100-100A. e. Scavenge pump cartridge: 15111-F21S-A21; Fast Forward PN: FF100-127. f. Scavenge pump port A: HPD PN: 15137-F21S-A20; Fast Forward PN: FF100-101. g. Scavenge pump port B: HPD PN: 15139-F21S-A20; Fast Forward PN: FF100-102. h. Scavenge pump shaft: HPD PN: 15510-F21S-A20; Fast Forward PN: FF100-103. i. Scavenge pump front cover: HPD PN: 15070-F21S-A21; Fast Forward PN: FF100-104."
cars addedFields Cardinal V8 classified in GT1 with Ford V8 engine, 4.9L displacement, 2100 lbs minimum weight.
As printed in Fastrack
In GT Spec Lines, GT1 Cars - Fields Cardinal, classify Fields Cardinal V8 as follows: GT1 Cars – Fields Cardinal Model Years Body Style Drive- line Wheel- base (in) Notes Fields Cardinal V8 2023 2 Dr. RWD 92.0 Roll Cage MUST be modified to comply with
Show 6 more lines
GCR Section 9.4. In GT Spec Lines, GT1Engines - classify Ford V8 as follows: GT1 Engines - Ford Engine Family Engine Type Bore x
A specification table follows in the original; it is not shown here.
FC USF2000 Van Diemen with Mazda MZR LF-DE 2.0L in FC
cars addedUSF2000 Van Diemen with Mazda MZR LF-DE 2.0L added as spec line car in FC; removed from FX.
As printed in Fastrack
RM 23-07, USF2000 Van Diemen with Mazda MZR LF-DE 2.0L in FC, GCR section 9.1.1.B.1, add a new section and re-letter the following sections accordingly: "c. The USF2000 tube frame Van Diemen car powered by the Mazda MZR LF-DE 2 liter engine is added as a "spec line" car in Formula Continental. Additional "spec line" cars are disfavored, and Balance of Performance (BoP) adjustments to keep "spec line" cars competitive with cars that meet the class formula are likewise disfavored." In FC, GCR section 9.1.1.B.11, add the following: "The only permitted engines are: a. The Ford 2 liter single overhead camshaft "NE" series engine or the 1971-74 Pinto/Capri 2 liter single overhead camshaft
Show 9 more lines
engine. The specifications are contained in B.15. b. The Ford Zetec ZX3 2 liter dual overhead camshaft engine. The specifications are contained in B.16. c. The Mazda MZR LF-DE 2 liter for use only in USF2000 cars, as described in the Spec Line Cars Table below." In FC, GCR section 9.1.1.B, add the following: In FX, GCR section 9.1.1.J.B, change as follows and renumber the remaining lines accordingly: "3. USF2000 (tube frame) – Shall comply with FRP F2000 Technical Specifications (2018) 4. Pro Formula F2000 (tube frame) – Engine must be prepared to current FC rules." In FX Table 1, remove the USF2000 Tube Frame and Pro Formula F2000 Tube Frame spec lines in their entirety. Spec Line Cars Table
A specification table follows in the original; it is not shown here.
wordingFC tire marking rule clarified: four dry and wet tires for Regionals, eight each for Runoffs; damaged tire replacement procedures revised.
As printed in Fastrack
In FC, GCR section 9.1.1.B.10.h, change as follows: "FC shall be is permitted a maximum of four (4) dry tires and four (4) wet tires for all Regional, Major, and Super Tour events; eight (8) dry tires and eight (8) wet tires are permitted for the Runoffs. This rule shall be is effective beginning with the first (1st) qualifying session of the event. Marked tires are not required for testing or practice. It is the competitor's responsibility to ensure that the tires are declared, marked, and logged by Tech in advance of the tire(s) being used in a qualifying session or race. Failure to participate on marked tires will result in a penalty. 1. Use of an undeclared tire shall automatically result in all times being disallowed in that session or finishing position in that race.
Show 5 more lines
2. If a tire is damaged during a qualifying session or a race, the competitor may replace the damaged tire with a used tire upon approval by the Chief Steward without loss of time or finishing position. Second or subsequent damaged tires may similarly be replaced upon approval by the Chief Steward, however but such shall will result in the loss of grid position in the subsequent race or session; the competitor shall will start at the back of the grid. Replacement of a damaged tire with a new tire upon approval by the Chief Steward will result in loss of grid position in the subsequent race or session."
wordingAS crate motor part number specified: GM Performance CT400 P/N 19370604 engine assembly for GM vehicles.
As printed in Fastrack
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."
wordingAS Dodge Challenger 5.7L/6.1L/6.4L V8 now permits SPC-66045 alternate front upper control arms.
As printed in Fastrack
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
wordingAS Dodge Challenger 5.7L/6.1L/6.4L V8 allows alternate front brake caliper adapters for updated or backdated components.
As printed in Fastrack
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."
GTX Errors in GTCS Headings and Use of the Terms Category and ClassChange existing GTL and GTA Rules
wordingGTL spec lines moved to contiguous position with GT2 and GT3; GTA category and spec lines renumbered and moved behind GTL.
As printed in Fastrack
from the current (or before) Table of Contents (TOC), to what is shown in the after TOC. GTL spec lines will now be contiguous with GT2 and 3 spec lines. GTA category and spec lines will be moved and renumbered behind GTL. GTA Section will not change but page numbers will, (as shown in Red italics). 9.1.2.F. GT-2, 3, LITE Category Specifications 314 GT2 Cars 327 GT2/ST 341 GT3 Cars 348
engineF600 Rotax 494, 493, 593 engines now require single expansion chamber and pull starter; electric starter optional.
As printed in Fastrack
In Cars and Equipment, GCR section 9.3.33.B.2, add the following: "(Effective 1/1/2024) A red taillight meeting FIA Standard 8874-2019, Technical List No. 76, is required on all Formula (open wheel) and Sports Racing cars." In Appendix F. Technical Glossary, Minimum Weight, change as follows: "Minimum Weight: – Weight specified with driver, exactly as they come off the race circuit, at the conclusion of any race or qualifying session." In FA Table 1, Spec Line E notes, add the following: "Any BD series iron or alloy cylinder block and alternate crankshaft permitted."
Show 8 more lines
In FC, GCR section 9.1.1.B.11.c, change as follows: "The Mazda MZR LF-DE 2 liter for use only in USF2000 cars, as described in the Spec Line Cars Table below."" In F600, GCR section 9.1.1.D.14, add the following: "Rotax Model 494, Model 493, and Model 593 must use a single expansion chamber and must be equipped with a pull starter; an electric starter may be added." In P1, GCR section 9.1.8.B.J.2, add the following: "Where a flat plate intake restrictor, restricted venturi, or Single Inlet Restrictor (SIR) is required, all intake air for each cylinder or the entire fuel-air mixture, if prepared before this point, must pass through the restrictor."
wordingFF Honda Fit gains Fast Forward FF800-100 oversize piston ring pack option.
As printed in Fastrack
In FF, GCR section 9.1.1.B.14.e.3.a, add the following: "The standard ring pack, PN 13011-RB1-004 (Riken) or 13011-RB1-006 (Nippon), or the oversize ring pack, PN 13021-RB7-Z01 (Riken), or 13021-RB7-Z02 (Nippon), or FF800-100 (Fast Forward), may be used."
fasterGT1, GT2, GT3, GTL, GTX rear spoiler maximum surface area limit of 295.0 square inches removed.
As printed in Fastrack
In GCR Section 9.1.2.G (GTA Category Specifications), change as follows: “9.1.2.G.III.I The single-plane rear spoiler must be mounted at an angel angle from 50 to 75 degrees (perpendicular to the ground being 90 degrees) and may not extend beyond the rear bumper when viewed from directly above the rear bumper. Spoilers must be a minimum of .063 aluminum or Lexan and may vary in overall height to match the contours of the bodywork. The rear spoiler dimensions shall not exceed 59.0 inches wide by 5.0 inches in height, (measured on the material surface) , or 295.0 square inches total surface area. Braces to prevent spoiler deflection are allowed, but may serve no other purpose.”
fasterGT1/GT2/GT3/GTL/GTX Direct Injection now permitted if OE, using only OE pump, hoses, injectors.
As printed in Fastrack
In GCR, Section 9.1.2.F.7.5.E. change as follows: “Direct Injection is not permitted only if it came OE and must be installed using only OE high pressure pump(s), hard and soft hoses and injectors.”
GTX GT2/3 remove Direction Injection not allowed in Spec line notes
fasterGT2/3 Nissan, Mazda, Mitsubishi 4G93, QR25DE/DD, QE25DE/DD Direct Injection now permitted per 9.1.2.F.7.5.E.
As printed in Fastrack
In GT2/3 modify Spec Line notes as follows: GT2: Nissan: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.” GT3: Mazda: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.” Mitsubishi 4G93: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E. ” Nissan QR25DE/DD 1988cc: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.” Nissan QE25DE/DD 2489cc: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.”
Cal Club 2024 → Cal Club 2025 2024-02-23 to 2025-02-22
AS Request to Classify 1970-1981 Camaro and Firebird in AS
cars addedChevrolet Camaro, Pontiac Firebird 70-81 Full Prep classified AS at 3400-3600 lbs with 250 lb weight reduction.
As printed in Fastrack
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.
wordingAS class: multiple cars gain fuel cell placement note allowing 24 inches from standard tank, unrestricted filler location.
As printed in Fastrack
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
Show 22 more lines
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.”
cars addedChevrolet Camaro 16- Full Prep classified into AS at 3400 lbs with 250 lb weight reduction.
As printed in Fastrack
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:
Show 4 more lines
Chevrolet Camaro (16-) Full Prep 110.6 3.42, 2.28,
A specification table follows in the original; it is not shown here.
cars addedFC adds F2000 Metrik ZF2 with Ford Zetec engine and four-piston Brembo calipers as spec-line car.
As printed in Fastrack
In FC Table FC Charts, add the following: In FC, GCR section 9.1.1.B.1.c, change as follows: "The USF2000 tube frame Van Diemen car powered by the Mazda MZR LF-DE 2 liter engine and the F2000 Metrik ZF2 car equipped with 4-piston calipers is are added as a "spec line" cars in Formula Continental. Additional "spec line" cars are disfavored, and Balance of Performance (BoP) adjustments to keep "spec line" cars competitive with cars that meet the class formula are likewise disfavored." FC Charts Car Engine Wheel Width
Show 1 more lines
(in) ± .060 Aero Transmission Weight Notes
A specification table follows in the original; it is not shown here.
fasterAS Cadillac CTS-V, Chevrolet Camaro SS, Dodge Challenger, Ford Mustang GT, Pontiac GTO allowed 11" wheels until 3/1/25.
As printed in Fastrack
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."
Show 2 more lines
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 Ford Mustang on this page: Roger Eagleton, Ross Murray, Matt Lituchy, Michael Lowe, Pratt Cole
cars addedAS Chevrolet Camaro 1LE (2016-) classified with 3600 lbs minimum weight, 60mm restrictor, 275 tires.
As printed in Fastrack
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
Show 2 more lines
(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.
otherAS Chevrolet Camaro, Firebird, and Ford Mustang models permitted to use Flo Tek cylinder heads.
As printed in Fastrack
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."
Show 4 more lines
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 Ford Mustang on this page: Roger Eagleton, Ross Murray, Matt Lituchy, Michael Lowe, Pratt Cole
AS Request for Classification of 2018-2023 mustang In
unclearAS Ford Mustang GT models gain alternate transmission ratio options for 2024-09-01.
As printed in Fastrack
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 on this page: Roger Eagleton, Ross Murray, Matt Lituchy, Michael Lowe, Pratt Cole
wordingFF VTEC activation valve must function; EGR blanking plate rule clarified with Fast Forward part numbers.
As printed in Fastrack
In FF, GCR section 9.1.1.B.14.r.1, change as follows: "All emission control devices must be removed and blocked off by the blanking plate provided by HPD or Fast Forward as noted below, except for the VTEC activation valve. The VTEC activation valve must be retained; and it must be functioning. No modifications are permitted. a. EGR Plate: Fast Forward PN: FF200-301. b. EGR Port Cover: Fast Forward PN: FF200-302."
slowerFC tire limit reduced to four dry and four wet for Regional/Major/Super Tour, eight for Runoffs.
As printed in Fastrack
In FC, GCR section 9.1.1.B.10.h, change as follows: "(Effective 11/1/2024) FC is permitted a maximum of four (4) dry tires and four (4) wet tires for all Regional, Major, and Super Tour events; eight (8) dry tires and eight (8) wet tires are permitted for the Runoffs. This is effective beginning with the first (1st) qualifying session of the event. Marked tires are not required for The tire limit does not apply to testing or practice. It is the competitor's responsibility to ensure that the tires are declared, marked, and logged by Tech immediately upon conclusion of the first qualifying session, as provided in the event supplemental regulations, or per the instructions of the Race Director or Chief Steward. in advance of the tire(s) being used in a qualifying session or race. Failure to participate on marked Use of tires in excess of the number allowed will result in a penalty. Failure to participate on declared/marked/logged tires after the time
Show 6 more lines
prescribed for the same may result in a penalty. If a tire is damaged during a qualifying session or a race, the competitor may replace the damaged tire with a used tire upon approval by the Race Director or Chief Steward without loss of time or finishing position. Second or subsequent damaged tires may similarly be replaced upon approval by the Race Director or Chief Steward, but such will result in the loss of grid position in the subsequent race or session; the competitor will start at the back of the grid. Replacement of a damaged tire with a new tire upon approval by the Race Director or Chief Steward will result in loss of grid position in the subsequent race or session; the competitor will start at the back of the grid."
fasterFF and FC cars with sequential gearbox must add 10 lbs. to minimum weight, down from 25 lbs.
As printed in Fastrack
In FF, GCR section 9.1.1.B.20.A.3, change as follows: "Cars running with a sequentially shifted gear box shall must add 25 10 lbs. to minimum weight." In FC, GCR section 9.1.1.B.20.B.4, change as follows: "Cars running with a sequentially shifted gear box shall must add 25 10 lbs. to minimum weight."
fasterFF and FC cars with sequential gearbox must add 10 lbs. to minimum weight, down from 25 lbs.
As printed in Fastrack
In FF, GCR section 9.1.1.B.20.A.3, change as follows: "Cars running with a sequentially shifted gear box shall must add 25 10 lbs. to minimum weight." In FC, GCR section 9.1.1.B.20.B.4, change as follows: "Cars running with a sequentially shifted gear box shall must add 25 10 lbs. to minimum weight."
wordingFF Honda Fit allows Fast Forward 0.25mm oversize pistons PN FF800-110 as alternative; piston diameter spec clarified to 2.8835 inches.
As printed in Fastrack
In FF, GCR section 9.1.1.B.14.e.1, change as follows: "Honda Fit OEM standard size pistons, PN: 13010-RB1-000, or Honda Fit OEM 0.25mm oversize pistons, PN: 13020-RB7-Z00, or Fast Forward 0.25mm oversize pistons, PN: FF800-110, may be used." In GCR section 9.1.1.B.14.e.2, change as follows: "a. Maximum standard piston diameter, measured at a point 16mm from the bottom of the skirt: 73.240mm (2.8834 2.8835 inches). b. Centerline of wrist pin to crown maximum: 26.21mm (1.032 inches). c. Maximum overall height from skirt to crown edge: 47.80mm (1.882 inches).
Show 13 more lines
d. Minimum weight: 198.0 grams (6.984 ounces). e. Minimum weight of piston pin: 66 grams (2.25 ounces). f. Combined minimum weight of piston, piston pin and connecting rod: 543.5 grams (18.85 ounces). g. Combined minimum weight of piston, wrist pin, and circlips: 267 grams (9.418 ounces). h. Centerline of wrist pin to crown edge: 26.289mm (1.035 inches). i. Ring groove widths: Top ring groove: 1.003mm (0.0395 inches). Middle ring groove: 1.016mm (0.0400 inches). Oil ring groove: 1.981mm (0.0780 inches). j. Ring groove distance from wrist pin center to bottom of groove: Top ring groove: 19.63mm (0.7730 inches). Middle ring groove: 15.29mm (0.6020 inches). Oil ring groove: 10.91mm (0.4295 inches)."
fasterAS Ford Mustang Coyote engines increase restrictor to 80mm from 64mm or 67mm.
As printed in Fastrack
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"
fasterAS Mustang GT 05-14 4.6L loses 300 lbs; 15-17 and 2018+ models lose 61mm and 60mm restrictors respectively.
As printed in Fastrack
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
Show 10 more lines
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 on this page: Roger Eagleton, Ross Murray, Matt Lituchy, Michael Lowe, Pratt Cole
wordingAS class gear ratio options specified for multiple American muscle cars, including Cadillac CTS-V, Chevrolet Camaro, Ford Mustang, Dodge Challenger, and Pontiac GTO.
As printed in Fastrack
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:
Show 42 more lines
"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"
In GCR, Section APPENDIX L. 2013 TA2 TECHNICAL REGULATIONS, B.2.c., change as follows: "B. Aerodynamic Devices 2. Rear wing c. The entire rear wing assembly, including the end plates and any Gurney flap, shall be mounted level with, or below, the peak of the roof. OEM aerodynamic devices do not need to adhere to the height rule."
A specification table follows in the original; it is not shown here.
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:
Show 14 more lines
"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."
Cal Club 2025 → Cal Club 2026 2025-02-22 to 2026-02-21
FF Formula F Proposal to Invite Older Cars Via a Tire Rule Change
fasterFF allows older cars with rocker arm or outboard suspension to use bias ply slicks or VFF tires instead of radials.
As printed in Fastrack
In FF, GCR section 9.1.1.B.10.e, change as follows: "Formula F shall be limited to the following tires (front tires may not be used as rears): Dries: Front - Hoosier R60A Radial 43322 or F1600 Radial 43321 185/60R13 Rear - Hoosier R60A Radial 43327 or F1600 Radial 43326 205/60R13 Wets: Front - Hoosier Wet or W3 Radial 44421 185/60R13 Rear - Hoosier Wet or W3 Radial 44426 205/60R13
Show 12 more lines
Alternatively, Formula F cars with rocker arm suspension (e.g., Swift DB1, 1987-90 Reynard) and/or outboard suspension on at least one chassis end may use the following tires: Dries: Front - Hoosier H43130 R60A 20.0 x 6.0-13 or H43164 R60A 20.5 x 7.0-13 bias ply slick Rear – Hoosier H43307 R60A 22.5 x 7.2-13 bias ply slick Wets: Radial wets listed above or Front - Hoosier 44165 135/545-13 VFF Rear - Hoosier 44170 165/580-13 VFF Front tires may not be used as rears, and tires may not be mixed, i.e., radial tires may not be mixed with bias ply slick tires, bias ply slick tires may not be mixed with VFF tires, and radial tires may not be mixed with VFF tires."
wordingAS class notes cleanup: multiple Camaro, Firebird, CTS-V, Challenger, Mustang specs and fuel cell/ECM/head restrictions removed.
As printed in Fastrack
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
Show 88 more lines
#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."
cars addedGTX Porsche GT2 RS Clubsport classified with factory specifications required at all race events.
As printed in Fastrack
In GTX, Classify Porsche GT2 RS Clubsport, as follows: GTX Make Homologation Model Restrictor (mm) Weight (lbs) Notes Porsche GT2 RS Clubsport Must have factory specifications available at all race events
wordingAS LS1/LS6 5.3L truck engine gains four approved intake part numbers: 12561269, 88894095, 89017363, 89017364.
As printed in Fastrack
In GCR, Section 9.1.6.F., add the following to Intake Part #’s: "17113697, 19418185, 89017230, 89017363, 89017364, and 89017365, 12561269 and 88894095"
tyres & wheelsFF adds rocker arm and outboard suspension cars optional bias ply and VFF tires; removes front-as-rear rule, adds mixing restrictions.
As printed in Fastrack
In FF, GCR section 9.1.1.B.10.e, change as follows: "Formula F shall be limited to the following tires (front tires may not be used as rears): Dries: Front - Hoosier R60A Radial 43322 or F1600 Radial 43321 185/60R13 Rear - Hoosier R60A Radial 43327 or F1600 Radial 43326 205/60R13 Wets: Front - Hoosier Wet or W3 Radial 44421 185/60R13 Rear - Hoosier Wet or W3 Radial 44426 205/60R13
Show 16 more lines
Alternatively, Formula F cars with rocker arm suspension (e.g., Swift DB1, 1987-90 Reynard) and/or outboard suspension on at least one chassis end may use the following tires: Dries: Front - Hoosier H43130 R60A 20.0 x 6.0-13 or H43164 R60A 20.5 x 7.0-13 bias ply slick or Hoosier 44165 135/545-13 VFF Rear – Hoosier H43307 R60A 22.5 x 7.2-13 bias ply slick or Hoosier 44170 165/580-13 VFF Wets: Radial wets or VFF tires listed above or Front - Hoosier 44165 135/545-13 VFF Rear - Hoosier 44170 165/580-13 VFF Front tires may not be used as rears, and tires may not be mixed, i.e., radial tires may not be mixed with bias ply slick tires, bias ply slick tires may not be mixed with VFF tires, and radial tires may not be mixed with VFF tires."
unclearAS Ford Mustang GT 94-04 Restricted Prep Engine now permits Ford Motorsport M-6250-F303 camshaft.
As printed in Fastrack
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 on this page: Roger Eagleton, Ross Murray, Matt Lituchy, Michael Lowe, Pratt Cole
wordingFC USF2000 Tube Frame may use Hewland LD200 4-speed H-pattern as alternative to Hewland JL-200 5-speed sequential.
As printed in Fastrack
In FC Charts table, USF2000 Tube Frame spec line, add the following to the Notes: "Cars originally built with the Hewland LD200 4-speed H-pattern may use that transmission as an alternative to the Hewland JL- 200 5-speed sequential transmission."
FF Formula F Alternative Tire Rule Proposed Clarifications
wordingFF clarifies alternative tire eligibility for cars homologated 1989 or earlier with rocker arm or outboard suspension on all four corners.
As printed in Fastrack
In FF, GCR section 9.1.1.B.10.e, change as follows: "Alternatively, Formula F cars with rocker arm suspension (e.g., 1987-90 Reynard, Swift DB1,) and/or outboard suspension on at least one chassis end homologated in 1989 or earlier with any combination of rocker arm or outboard suspension on all four corners (e.g., 1987 – 1990 Reynard, Swift DB1) may use the following alternative tires. Note: This rule is intended to allow older cars with the described suspension design to use the alternative tires. It is not to be exploited by modifying cars with push-rods or pull-rods to meet the above requirements or by modifying either end of older cars to push- or pull-rod suspension to be eligible to run the alternative tires. Cars that were homologated in 1989 or earlier with push- or pull-rod suspension on no more than two corners may seek approval to run the alternative tire by utilizing the compliance process outlined in GCR section 8.1.4."
GTX Please Consider Adding a Spec Line to GTX Table 4 for the RCR T70
slowerAS Ford Mustang Restricted Prep engines lose 3 mm restrictor plate, from 64 mm to 61 mm.
As printed in Fastrack
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"
cars addedAS Chevy LS adds Edelbrock Performer RPM 71187 intake manifold with MSD 6014 ignition and 4776 Holly carburetor as spec line option.
As printed in Fastrack
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)"
What the rules allowed changed as listed; this does not say what any particular car ran.