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.
One session is left out because the timing does not look like full laps: Cal Club 2023 Qualifying #2.
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
Lamborghini Huracan GT3 Evo
GT1
1
1:39.857Michael McAleenan
1:39.857Michael McAleenan
1:41.045Michael McAleenan
167.6Michael McAleenan
27.368Michael McAleenan
29.135Michael McAleenan
42.926Michael McAleenan
Jaguar XKR
GT1
1
1:39.901Michael Lewis
1:39.901Michael Lewis
1:41.635Michael Lewis
151.5Michael Lewis
27.895Michael Lewis
28.765Michael Lewis
43.241Michael Lewis
Porsche 986 Boxster
T3
1
1:51.337Reto Eberle
128.4Reto Eberle
29.898Reto Eberle
33.530Reto Eberle
54.812Reto Eberle
Mazda RX-7
FP/GT1
1
1:53.007Michael Lewis
1:56.121Michael Lewis
1:53.007Michael Lewis
128.8Michael Lewis
30.700Michael Lewis
32.429Michael Lewis
49.385Michael Lewis
Ford Mustang
T3
5
1:55.675Scotty B White
1:55.965Roger Eagleton
1:55.675Scotty B White
137.2Scotty B White
31.598Scotty B White
33.496Scotty B White
50.029Scotty B White
Nissan Sentra SE-R
FP
1
1:55.722Brian Linn
1:57.239Brian Linn
1:55.722Brian Linn
128.3Brian Linn
31.416Brian Linn
33.400Brian Linn
50.478Brian Linn
Volkswagen GTI
FP
1
1:56.016Tim Linerud
2:06.156Tim Linerud
93.4Tim Linerud
33.738Tim Linerud
35.656Tim Linerud
55.246Tim Linerud
Nissan 370Z
T3
1
1:56.241Gamaliel Aguilar-Gamez
1:56.241Gamaliel Aguilar-Gamez
1:56.899Gamaliel Aguilar-Gamez
131.8Gamaliel Aguilar-Gamez
31.456Gamaliel Aguilar-Gamez
33.615Gamaliel Aguilar-Gamez
50.788Gamaliel Aguilar-Gamez
Mazda MIata
FP
1
1:56.276Steven Powers
1:57.032Steven Powers
1:56.276Steven Powers
134.3Steven Powers
31.570Steven Powers
33.696Steven Powers
50.716Steven Powers
Fiat X 1/9
FP
1
1:59.128Daniel Snow
2:00.398Daniel Snow
1:59.128Daniel Snow
137.8Daniel Snow
31.878Daniel Snow
34.053Daniel Snow
52.221Daniel Snow
BMW Z4M
T3
1
1:59.315J. David Orem
2:00.000J. David Orem
1:59.698J. David Orem
128.1J. David Orem
32.480J. David Orem
34.645J. David Orem
51.770J. David Orem
BMW 330ci
T3
1
1:59.844Ron Tanemura
1:59.844Ron Tanemura
1:59.971Ron Tanemura
136.3Ron Tanemura
32.188Ron Tanemura
34.401Ron Tanemura
52.107Ron Tanemura
Porsche 914-4
FP
1
2:15.932Garey Raymond
2:21.274Garey Raymond
2:15.932Garey Raymond
84.8Garey Raymond
37.237Garey Raymond
39.091Garey Raymond
59.604Garey Raymond
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
wordingT3 Porsche Spec Boxster tire rule updates to current SPB rules or any 245 DOT tire.
As printed in Fastrack
In T3 Spec Lines, Porsche Spec Boxster, change Notes as follows: "Must conform to all SPB rules in the PCA rulebook. Each competitor shall have available definitive current documentation of the PCA rules. Tires must meet 2016 Current SPB rules or any 245 DOT tire permitted. No other touring allowances permitted."
Applies to Porsche 986 Boxster on this page: Reto Eberle
T3 OEM VW Steering Spindle Replacements 06-10 VW GTI and Jetta
wordingGT1 Mercedes AMG GT3 16-19 preparation wording changed to per FIA GT3 homologation.
As printed in Fastrack
In GT1-ST Spec Lines, Mercedes Benz AMG GT3 (16-19), change Notes as follows: "Car must be prepared to per its FIA GT3 homologation. except as specified differently within the GT1 class rules."
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
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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.
wordingFord Fiesta HP and Chevrolet Sonic FP model year ranges extended from 2016 to 2019.
As printed in Fastrack
In HP, adjust model years of the "Ford Fiesta (11-16)" spec line as follows: "Ford Fiesta (11-16 9)" In FP, adjust model years of the "Chevrolet Sonic (12-16)" spec line as follows: "Chevrolet Sonic (12-16 9)"
fasterT3 Camaro V6 1LE and LT-I4 Turbo 1LE max wheel diameter increases from 18 to 20 inches.
As printed in Fastrack
In T3 Spec Lines, Chevrolet Camaro V6 1LE (2016-), change Max. Wheel Size as follows: "18 x 10 20 x 10" In T3 Spec Lines, Chevrolet Camaro LT-I4 Turbo 1LE (2016-), change Max. Wheel Size as follows: "18 x 10 20 x 10"
wordingFP and HP Sprite, Midget, and Spitfire 1500 intake valve size corrected to 36.6/(1.44).
As printed in Fastrack
In FP Spec Lines, Austin-Healey Sprite Mk. I, II,III, IV MG Midget Mk I,II, III, IV & 1500, change Intake Valve Size as follows: "(I) 36.65.3/(1.44)" In FP Spec Lines, Triumph Spitfire Mk. IV & 1500, change Intake Valve Size as follows: "(I) 36.65.5/(1.440)" In HP Spec Lines, Triumph Spitfire 1500, change Intake Valve Size as follows: "(I) 36.65.5/(1.440)" In HP Spec Lines, Triumph Spitfire Mk. III & IV 1500, change Intake Valve Size as follows: "(I) 36.65.5/(1.440)"
wordingT3 Mazda RX-8 removes transmission/final drive pairing requirement; T4 removes same requirement, adds Mazdaspeed radiator and coil spring kit.
As printed in Fastrack
In T3 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), change notes as follows: "Use of 2009 R3 transmission is permitted with alternate gear ratios as listed. R3 transmission must be paired with the listed alternate final drive. Front sway bar permitted 32mm MAX rear sway bar 19 MAX, Front springs max 750, 500 rear. Cold air intake permitted. Header permitted. Aftermarket flywheel and single disc clutch permitted with no weight penalty." In T4 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), change notes as follows: "Mazdaspeed radiator #0000-01-8501 allowed. Use of 2009 R3 transmission is permitted with alternate gear ratios as listed. R3 transmission must be paired with the listed alternate final drive. Mazdaspeed coil spring kit #QSEA-34-01Z allowed. 60mm flat plate restrictor required. OE Rear spoiler allowed #F151-V4-920F. OE front air dam allowed #F151-V4-900f-BB. Springs Allowed:
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(F) Mazda Motorsports- 0000- 04-9700-08 or Eibach- 0800.250.0700 (R) Mazda Motorsports- 0000-04-9400-07 or Eibach 0700.250.0400, and helper 0000-04-9926 allowed. Alternate sway bars allowed max 32mm (f) 19mm (r)."
fasterT3 BMW 320i (14-15) gains aftermarket intercooler permission; T4 loses it.
As printed in Fastrack
In T3 Spec Lines, BMW 320i (14-15), add to Notes the following: "Aftermarket intercooler permitted." In T4 Spec Lines, BMW 320i (14-15), remove from Notes the following: "Aftermarket intercooler permitted."
wordingT3 Pontiac Solstice GXP minimum ride height set to 3 inches.
As printed in Fastrack
In T2 Spec Lines, Pontiac Solstice GXP Coupe / Convertible (07-09), add to Notes the following: "Minimum ride height is 3 inches." In T3 Spec Lines, Pontiac Solstice GXP Coupe / Convertible (07-09), add to Notes the following: "Minimum ride height is 3 inches."
T3 2006-10 Volkswagen GTI - Weight Reduction request and KO4 Turbo
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
fasterT3 Porsche Cayman (09-12) and (13-16) gear and final drive ratios adjusted; 09-12 6-SPD final drive 3.88 to 3.875, PDK 3.909 to 3.250; 13-16 6-SPD final drive 3.89 unchanged, PDK 3.91 to 3.250.
As printed in Fastrack
In T3 Spec Lines, change gear ratios and final drive ratios as follows:
A specification table follows in the original; it is not shown here.
cars addedEP Porsche 944/924S combines 2.5L and 2.7L variants with new weights: 2250–2415 lbs depending on engine and year.
As printed in Fastrack
In EP Spec Lines, delete the Porsche 944/924S 2.5L (2V) (83-88) spec line entirely, and create a new spec line for Porsche 944/924S 2.5L(2V) 2.7L(2V) (83-89) as follows:
A specification table follows in the original; it is not shown here.
fasterFP Toyota Corolla 2TC loses 43 lbs to 1810; HP Corolla loses 50–52 lbs to 1910–2006.
As printed in Fastrack
In FP Spec Lines, Toyota Corolla 2TC (71-74), change weight as follows: "1853 1810" In HP Spec Lines, Toyota Corolla (71-74), change weight as follows: “1960 1910 * 2009 1958 ** 2058 2006”
wordingT3 VW Golf GTI and Golf R TIR location clarified to maximum 60mm from impeller.
As printed in Fastrack
In T3 Spec Lines, Volkswagen GTI (2013), change Notes as follows: "Rear sway bar max 42 mm (body and suspension mounting same as OEM), Any spring up to a maximum spring rate of 800 pounds may be used. Turbo Inlet Restrictor 36mm required max 60mm from impeller. R32 model brake package allowed. Verkline WAS-048 camber arms permitted." In T3 Spec Lines, Volkswagen Golf R (15-16) change Notes as follows: "Max spring rate 800 F&R, Max swaybar 38mm F, 42mm R. 36mm TIR required max 60mm from impeller."
wordingGT1 Trick Flow Specialties Ultra 18 Degree GM Cylinder Head Part #TFS-3181T001-CO1 allowed.
As printed in Fastrack
In GCR, Section 9.1.2.D.1.e.3., add at the end of section add the follows: "Trick Flow Specialties Ultra 18 Degree GM Cylinder Head assembly Part #TFS-3181T001-CO1 is allowed."
slowerT3 Nissan 350Z DE motor loses 75 lbs to 3125; HR motor gains 47mm restrictors, up from 44mm.
As printed in Fastrack
In T3 Spec Lines, Nissan 350ZTrack/ Touring/Standard/Nismo(03-08), change as follows: Weight: "DE Motor: 3200 3125 HR Motor: 3275" Notes: "HR Engine: Two 44mm 47 mm flat plate restrictors required. DE engine: Cold air intake permitted."
wordingT3 2010 Mustang GT 4.6 now allows 2013-14 GT style front/rear fascia, hood, and associated assemblies.
As printed in Fastrack
In T3 Spec Lines, Ford Mustang Coupe GT & Shelby GT 4.6L & Cal. Special (05-10), add to Notes the following: "2010 models may update the front and rear fascia, hood and associated assemblies to the 2013-14 GT style."
Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett
In EP spec line, Triumph GT6, make the following change in the Notes section: "Two (2) 1.75” auto-type carburetors @ 1970 40 lbs. Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990 lbs. Laycock overdrive, May use 5 speed gearbox w/o overdrive. Three (3) Weber 40mm DCOE w/28mm venturi on individual runner manifold @ 2020 lb."
fasterT3 BMW SpecE46 minimum weight drops 50 lbs to 2850.
As printed in Fastrack
In T3 Spec Lines, BMW SpecE46, change as follows: Min Weight: "2900 2850" Notes: "Must conform to all SpecE46 rules Version 2.10. SpecE46 spec tire permitted or any DOT permitted up to 225 permitted. No other touring allowances permitted. Engines may not be modified unless specified in the Spec E46 rules and must conform to touring tech procedures. Driver must possess a current copy of the rules. Dyno results do not ensure engine compliance. SE46 HP limit does not apply."
fasterEP Honda S2000 fuel injected throttle body inside diameter increases from 62mm to 64mm.
As printed in Fastrack
In EP spec line, Honda S2000, make the following changes to its spec line: Fuel Injected Equipped Throttle Body Inside Diameter: "62 64" Notes: "Comp. Ratio limited to 12.0:1. Valve lift limited to .500”. An adaptor plate can be used to mount the 62mm throttle body from '00-05 to the '06-09 intake manifold. The adaptor plate can be no more than 1.25" thick, and its bore must not exceed the "Fuel Injected Equipped Throttle Body Inside Diameter" maximum spec of 64mm."
slowerT3 Subaru STI (15-20) minimum weight increases 100 lbs to 3450; all three STI variants get larger turbo inlet restrictors.
As printed in Fastrack
In T3 Spec Lines, Subaru WRX STI (03-07), change Notes as follows: "Killer B intake pipe #EJTI and coupler permitted. 37mm 39mm TIR required." In T3 Spec Lines, Subaru STI (15-20), change as follows: Min Weight: "3350 3450" Notes: "Killer B intake pipe #EJTI and coupler permitted. 37mm 40mm TIR required." In T3 Spec Lines, Subaru Legacy GT/Spec B (05-09), change Notes as follows: "Killer B intake pipe #EJTI and coupler permitted. 37mm 39mm Turbo inlet restrictor required."
wordingEP Triumph TR8 dry sump allowance moved from carburetor line to notes section.
As printed in Fastrack
In EP spec line, Triumph TR8 (78-81), move the "Dry sump allowed" wording to the appropriate location as follows: Carburetor. No. & Type: “Zenith Stromberg carbs or fuel injection. Dry sump is allowed.” Notes: “Comp. Ratio limited to 12.0:1, Valve lift limited to .500”. Dry sump is allowed.”
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.”
In GCR, Section 9.1.9.2.D.1.g.3., change as follows: "Batteries may be replaced provided the replacement is capable of starting the car. Batteries may not be relocated unless noted on the spec line. Batteries must be adequately secured. Battery labeling must conform to 9.3.35.D. with those of an alternate manufacturer, provided they are of similar amp-hour capacity, size and within 10% of OEM weight."
T3 Open Strut Tower Brace Options for Ford Mustang V6 (11-14)
cars addedT4 now permits C-Spec cars to compete alongside B-Spec cars.
As printed in Fastrack
In GCR, Section 9.1.9.2., change as follows: "Touring car eligibility: Cars are eligible for the class they are listed with a specification line and with the specific allowances permitted. In addition, T2-T4 cars may race one class up in touring classes above their specification line class as long as they are a legal T2-T4 car and conform to their specification line allowances as classified. Cars conforming to C-Spec rules are permitted to compete in Touring 4."
wordingT2-T4 spec lines for 46 cars expire 12/31/24; appeal required to continue.
As printed in Fastrack
In T2-T4 Spec Lines, add **This Spec line will expire 12/31/24, Please submit to appeal** to Notes to the following Spec Lines: T2: Acura TL SHAWD (10-13) Audi S4 (12-14) Audi S5 (13-14) Audi TT RS (2018-) Cadillac ATS-V (16-17)
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Cadillac CTS-V (06-07) Chevrolet Camaro SS (98-02) Honda Civic (2017-) Saturn Sky / Convertible (07-09) Subaru Impreza WRX STi (03-07) Subaru Impreza WRX STi (08-11) T3: Audi S4 (10-11) Audi S4 (12-14) Audi TTS Coupe (10-11) Cadillac ATS (2015) Chevrolet Cobalt (05-07) Dodge SRT-4 (03-05) Ford Fiesta ST (2014-) Hyundai Genesis Coupe (2010-) Hyundai Veloster Turbo (18-21) Mazda RX-8 Base/R3/Sport/ GT (04-12) Mini Cooper S (2016-) Subaru WRX (02-05) Toyota Camry (11-15) T4: Acura Integra GS-R VTEC (3 or 4 door) (94-01) Audi A4 V-6 (96-01) / Volkswagen Passat 2.8 V6 (96-05) BMW 320i (14-15) Chevrolet Cobalt SS, Sport Coupe (06-10) Chevrolet Sonic RS (2011-) Chrysler/Dodge Neon ACR SOHC (4 door) (01-02) Dodge Dart (14-15) Dodge/Plymouth Neon ACR SOHC/DOHC (2/4 door) (95-99) Fiat 500 Abarth (12-14) Ford Focus SVT (02-04) Ford Focus ZX4 ST (05-06) Ford Focus (08-11) Ford Mustang V-6 (01-04) Honda Accord LX & EX (03-07) Honda Accord LX-S/EX/EX-L (08-12) Honda Civic Coupe Si (99-00) Honda Civic SI (02-03) Hyundai Elantra GLS (11-12) Hyundai Tiburon V-6 (03-08) Hyundai Veloster Turbo/ R-Spec (14-15) Kia Forte Koup and Sedan LX/EX (10-13) Kia Forte Koup and Sedan SX (10-13) Kia Forte Koup (14-15) Mazda Protégé ES (2000) Mazda Protégé 5 (02-03)
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.”
GT1 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
fasterT3 Spec Z 350Z rear wheel width increases to 10 inches; HR Engine restrictors change from 42mm to 44mm.
As printed in Fastrack
In T3 Spec Lines, Nissan 350Z Track/ Touring/ Standard/ Nismo Spec Z (03-08), change as follows: Max Wheel Size (inch): "18 x 9 (F) 18 x 10 (R)" Notes: "Nissan Motorsports: Shock Front left P/N E6110-SZ350 & Front right E6111- SZ350 & rear E6210-SZ350, springs front P/N 54010-SZ350 & rear 55020- SZ350, F&R 5600S-SZ350, Front sway bar max 37mm. Rear sway bar max 25mm, Bushings P/N (54541, 54560, 55045, 55148, 55149, 55152, 55153, 55158, 56218) - RRZ30 allowed. Nismo flywheel permitted. SPC Control Arms 72125 and 72123 are allowed. HR Engine: Two 42mm flat plate restrictors required. Zspeed and Z1 alternative clutch slave permitted. Must conform to all SpecZ 2018 Edition rules. No other touring allowances beyond 2018 SpecZ edition rules or allowances listed here. Nissan brake part numbers NISMO Race Front Caliper Kit 41001-FR350, NISMO Front Rotor-RIGHT 40206-
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SZ350, NISMO Front Rotor-LEFT 40207-SZ350 permitted. 44011-RC350 rear caliper kit permitted, 43206-SZ350 Right rotor permitted, 43207-SZ350 Left rotor permitted. Car must conform to the Official 2024 Spec Z Rules. HR Engine: Two 44mm flat plate restrictors required. Tires must conform to Spec Z rules. Competitor must be able to provide a copy of the current rules."
suspension & brakesT3 Nissan 350Z and 370Z now allow brake booster vacuum regulator, must not be in-car adjustable.
As printed in Fastrack
In T3 Spec Lines, Nissan 350Z Track/ Touring/ Standard/ Nismo (03-08), add to Notes as follows: "Brake booster vacuum regulator allowed, cannot be in-car adjustable." In T3 Spec Lines, Nissan 370Z, incl. Nismo (2009-2022), add to Notes the following: "Brake booster vacuum regulator allowed, cannot be in-car adjustable."
Applies to Nissan 370Z on this page: Gamaliel Aguilar-Gamez
fasterT3 Ford Mustang 4.6L restrictor holes increased from 40 mm to 45 mm.
As printed in Fastrack
In T3 Spec Lines, Ford Mustang Coupe GT & Shelby GT 4.6L & Cal. Special (05-10), change Notes as follows: "A flat plate restrictor with two 40 mm 45mm holes required directly behind throttle body."
Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett
T3 Appeal for Retention of T3 Mazda RX-8 Spec Line (Letter #35378)
In HP Spec Lines, delete the following redundant spec lines in their entirety: Spec line #10 - VW Rabbit Cabriolet 1780 Spec line #3 - VW Scirocco 1588 Spec line #4 - VW Scirocco 1780 (8-valve) (83-88) Spec line #5 - VW Scirocco 1588
unclearT3 and T4 Mazda RX-8 may remove or disable factory oil injection system.
As printed in Fastrack
In T3 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), add to Notes as follows: "OEM oil injection system may be removed or disabled." In T4 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), add to Notes as follows: "OEM oil injection system may be removed or disabled."
wordingFP Honda CRX 84-87 can replace plastic front header, rocker skirt, door cap panels with stock-appearance replicas in alternate materials.
As printed in Fastrack
In FP spec line "Honda CRX / CRX Si (84-87)", add the following wording to the Notes section: "The plastic OE front header/nose body panel, lower rocker side-skirt, and lower door cap panel can be replaced by a replica, which may be constructed of an alternate material, provided its appearance remains stock."
slowerFP Acura Integra and Honda Civic models now require 55mm Flat Plate Intake Restrictor.
As printed in Fastrack
In the following FP spec lines, add the following wording to the Notes section: Acura Integra (90-93) Acura Integra LS (94-01) Acura Integra GSR (92-93) Honda Civic Del Sol VTEC (94-97) Honda Civic Si (99-00) "55mm Flat Plate Intake Restrictor is required."
slowerT2, T3, T4 driveshafts may use alternative materials or one-piece units; non-OEM adds 25 lbs.
As printed in Fastrack
In GCR Section 9.1.9.2.D.4.b., add the following: "6. T2-T3- Driveshafts may be replaced with alternative materials ie. carbon fiber, aluminum, steel. Two-piece driveshafts may be replaced with one-piece units. If non-OEM driveshaft is used, add 25 lbs."
wordingAudi S4 00-02 in T3 must compete in 3 Super Tour events before Runoffs eligibility.
As printed in Fastrack
In T3 Spec Lines, Audi S4 (00-02), add to Notes as follows: "**This car is not eligible for the Runoffs until it has competed in 3 Super Tour events.**"
wordingEP Mazda RX-8 (04-11) alternate spec line removed; one primary line remains.
As printed in Fastrack
Spec Lines, make the following changes to the two Mazda RX-8 spec lines. Remove spec line entirely: Mazda RX-8 (04-11) Remove the wording "alternate": Mazda RX-8 (04-11)(alternate) Spec Mazda (SM/SMX) None.
unclearFord Mustang GT 5.0L and V6 now permit Track/Performance Package parts in T2 and T3.
As printed in Fastrack
In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), add to Notes as follows: "Track/Performance Package parts permitted." In T2 Spec Lines, Ford Mustang GT 5.0L (2018-), add to Notes as follows: "Track/Performance Package parts permitted." In T3 Spec Lines, Ford Mustang V6 (15-17), change Notes as follows: "Track/Performance package allowed."
Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett
fasterT2-T4 Ford Mustangs: remove 25 lbs penalty for non-OEM driveshaft, clarify alternate driveshaft allowances.
As printed in Fastrack
In GCR Section 9.1.9.2.D.4.b.6., remove as follows: "If non-OEM driveshaft is used, add 25 lbs." In T2 Spec Lines, Ford Mustang V6 (11-14), change Notes as follows: "Driveshaft from Alternate metallic driveshaft is allowed." In T2 Spec Lines, Ford Mustang Boss 302 (12-13), change Notes as follows: "Alternate metallic driveshaft is allowed." In T2 Spec Lines, Ford Mustang GT 5.0L (11-14)ki, change Notes as follows: "Alternate metallic driveshaft is allowed."
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In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), change Notes as follows: "Alternate metallic driveshaft is allowed." In T2 Spec Lines, Ford Mustang GT 5.0L (2018-), change Notes as follows: "Alternate metallic driveshaft is allowed." In T2 Spec Lines, Ford Mustang Coupe GT & Shelby GT 4.6L (05-10), change Notes as follows: 'An Aluminum driveshaft is allowed." "Alternate metallic driveshaft is allowed." In T3 Spec Lines, Ford Mustang Coupe GT & Shelby GT 4.6L & Cal. Special (05-10), change Notes as follows: "An Aluminum driveshaft is allowed." "Alternate metallic driveshaft is allowed." In T3 Spec Lines, Ford Mustang V6 (11-14), change Notes as follows: "Driveshaft from Alternate metallic driveshaft is allowed."
Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett
cars addedT3 BMW Z4 3.0si expands to include 3.0i Roadster and Coupe (07-08); hardtop permitted with positive fasteners.
As printed in Fastrack
In T3 Spec Lines, BMW Z4 3.0si, & Coupe (07-08) change Model and add to Notes as follows: "BMW Z4 3.0si, 3.0i, Roadster & Coupe (07-08)" Notes: "Any OEM or aftermarket hardtop permitted that retains the OEM roof silhouette (if a hardtop is used, latches shall be replaced with positive fasteners)."
fasterT3 Honda Civic Si (2017-2021) restrictor removed, weight to 2950 lbs, Runoffs eligibility requires 3 Super Tour events.
As printed in Fastrack
In T3 Spec Lines, Honda Civic Si (2017-) with 2900 weight, change as follows: Model: "Honda Civic Si (2017-2021)" Restrictor: "36mm TIR" Add to Notes: "**This car is not eligible for the Runoffs until it has competed in 3 Super Tour events.**" In T3 Spec Lines, Honda Civic Si (2017-), change as follows: Model: "Honda Civic Si (2017-2021)" Restrictor: "36mm TIR" Weight (lbs): "30752950"
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Add to Notes: "**This car is not eligible for the Runoffs until it has competed in 3 Super Tour events.**"
wordingT3 Subaru STI (15-20) and WRX STI (03-07) permitted to use OEM spec block #IAG-ENG-S550 and head studs.
As printed in Fastrack
In T3 Spec Lines, Subaru STI (15-20), add to Notes the following: "OEM spec block permitted # IAG-ENG-S550, Head studs permitted." In T3 Spec Lines, Subaru WRX STI (03-07), add to Notes the following: "OEM spec block permitted # IAG-ENG-S550, Head studs permitted."
fasterHP Sprite and Midget 1275cc and 1098cc Level 2 compression ratio raised to 12.0:1.
As printed in Fastrack
In HP Spec Lines, Austin-Healey Sprite MkI, II, III, IV MG Midget (ALL) - Level 2 - 1275cc, change Notes as follows: "(Effective 11/1/2024) Compression ratio limited to 11 12.0:1" In HP Spec Lines, Austin-Healey Sprite MkI, II, III, IV MG Midget (ALL) - Level 2 - 1098cc, change Notes as follows: "(Effective 11/1/2024) Compression ratio limited to 11 12.0:1"
wordingT3 VW Golf R (12-13 and 15-18) 36mm TIR placement now allows OEM turbo inlet, removing 60mm distance limit from impeller.
As printed in Fastrack
In T3 Spec Lines, Volkswagen Golf R (12-13), change Restrictor Required as follows: "36mm TIR max 60mm from impeller TIR may be placed in the OEM turbo inlet as long as the restriction is entirely within the leading edge of the housing." In T3 Spec Lines, Volkswagen Golf R (15-18), change Restrictor Required as follows: "36mm TIR max 60mm from impeller TIR may be placed in the OEM turbo inlet as long as the restriction is entirely within the leading edge of the housing."
wordingT2 and T3 Mustang spec lines remove redundant driveshaft alternate/aluminum allowance wording.
As printed in Fastrack
In T2 Spec Lines, change Notes as follows: Ford Mustang V6 (11-14): "Alternate driveshaft is allowed." Ford Mustang Boss 302 (12-13): "Alternate driveshaft is allowed." Ford Mustang GT 5.0L (11-14): "Alternate driveshaft is allowed." Ford Mustang GT 5.0L (15-17): "Alternate driveshaft is allowed." Ford Mustang GT 5.0L (2018-): "Alternate driveshaft is allowed. Springs up to 800#/in front and rear permitted. Alternate metallic driveshaft permitted." Ford Mustang Coupe GT & Shelby GT 4.6L (05-10): "Alternate driveshaft is allowed."
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In T3 Spec Lines, change Notes as follows: Ford Mustang Coupe GT & Shelby GT 4.6L & Cal. Special (05-10): "Alternate driveshaft is allowed." Ford Mustang V6 (11-14): "Alternate driveshaft is allowed." Ford Mustang V6 (05-10): "An Aluminum driveshaft is allowed."
wordingT2, T3, T4 fuel cell installations may remove charcoal canisters, emissions valves, and sensors.
As printed in Fastrack
In GCR, Section 9.1.9.2.D.1.c. add the following: "5. Removal of ancillary fuel tank equipment charcoal canisters, emissions valves, and sensors allowed for OEM or aftermarket fuel cell installations."
wordingT2, T3, T4 brake component wording clarified: 2-piece rotors allowed in T2 within 5% OE diameter, T3 within 2% OEM diameter.
As printed in Fastrack
In GCR, Section, 9.1.9.2.D.6. Brakes, change as follows: "a. Components 1. The make and material of brake pads and linings may be changed. 2. Brake fluid may be substituted with any brake fluid. 3. Brake rotor dust shields may be removed or replaced to accommodate brake ducts. 4. Flexible rubber brake lines may be replaced with Teflon lined, metal braided hoses. 5. Any brake ducts are permitted, but they must serve no other purpose. Fender liners may be modified solely for routing and attachment of brake ducts. Duct intake openings may be created by the opening of 2 sections up to 14.5 square inches each in
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the front fascia. The stock headlamp location is not permitted for brake ducting. Two alternative duct openings may be created by the removal of the fog lights or 2 sections up to 14.5 square inches each of stock false grills originally located in the front fascia. 6. Stock replacement brake rotors may be obtained from sources other than the manufacturer provided they are the exact equivalent of the stock rotors. In T2 only - 2-piece rotors with ferrous metal rotor disks and aluminum hats are allowed, must be within 5% of OE diameter. In T3 only - 2-piece front rotors with ferrous metal rotor disks and aluminum hats are allowed, must be within 2% of OEM diameter. Drilled and slotted rotors are permitted. 7. Parking brakes, mechanisms, and actuating components may be removed. 8. Brake vacuum reservoirs sized 0.50 gallons or smaller are permitted. The port or fitting at the vacuum source may not be modified, enlarged or relocated. The vacuum reservoir and brake booster must be a closed system."
wordingT2, T3, T4 fuel cell cars may remove charcoal canisters, emissions valves, and sensors.
As printed in Fastrack
In GCR, Section, 9.1.9.2.D.1.c., add the following: "5. Removal of ancillary fuel tank equipment; charcoal canisters, emissions valves, and sensors allowed for OEM or aftermarket fuel cell installations."
T3 Allow Spec MX5 upgrade kit for 2009-11 RX8 S2 Transmision
wordingT3 and T4 Mazda RX-8 and MX-5 permit transmission kit #0000-02-5700.
As printed in Fastrack
In T4 Spec Lines, add the following to Notes: Mazda RX-8 Base/R3/Sport/ GT (04-12): "Transmission kit # 0000-02-5700 permitted. Mazda MX-5 / Club Model (06-15): "Transmission kit # 0000-02-5700 permitted." In T3 Spec Lines, add the following to Notes: Mazda MX-5 / Club Model (06-15): "Transmission kit # 0000-02-5700 permitted." Mazda RX-8 Base/R3/Sport/ GT (04-12): "Transmission kit # 0000-02-5700 permitted."
wordingT4 BMW 320i 14-15 Spec Line expires 12/31/24 removed; Turner Motorsports intercooler #024703TMS02 allowed.
As printed in Fastrack
In T4 Spec Lines, BMW 320i (14-15), change Notes as follows: "**This Spec line will expire 12/31/24, Please submit to appeal** Turner Motorsports intercooler #024703TMS02 allowed."
T3 Classification for a 2005 Cadillac CTS 3.6 liter 6 speed manual
fasterT3 Subaru WRX STI 03-07 drops 100 lbs to 3200; Legacy GT/Spec B 05-09 drops 150 lbs to 3200.
As printed in Fastrack
In T3 Spec Lines, Subaru WRX STI (03-07), change Weight as follows: "3300 3200" In T3 Spec Lines, Subaru Legacy GT/Spec B (05-09), change Weight as follows: "3350 3200"
GT1 Addition of a limited prep LS Chevy engine for GT1
In GCR, Section 9.1.2. GT1 Spec Lines, GT1 Approved Automobile List, LS1 V8 engine allowed with stock intake, add the following: "LS1 Limited Prep GT1 motor 2600 # with driver Blocks : GM castings or aftermarket, no lightening, Max volume 383 cubic inches Cylinder Heads: GM LS castings or aftermarket, stock valve angle, intake and exhaust ports must be in stock location, porting and polishing allowed Valves: No titanium valves, must be stock size for head part number
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Rockers: Factory 1.7 rockers only, aftermarket trunion mod allowed Pushrods: Free Intake manifold: stock EFI for variant used or GM 525 carb intake or Edelbrock carb variants ie: Performer RPM, Victor, Victor Jr. or similar. Camshaft: Hydraulic roller only, standard journal size, lift and duration free Timing chain: single or double roller type only water pump: stock or aftermarket in stock location Harmonic dampener: SFI approved, Pistons: Factory or aftermarket flat top pistons only, valve reliefs allowed, coatings allowed Crankshaft: Factory or forged steel aftermarket, 50 lb min. weight Rods: GM stock or aftermarket forged steel Carburetor: one 4150 type 750 cfm max"
T3 Request to Move Spec Mustang to Touring 3 (from T2)
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.
fasterT3 Ford Mustang V6 (11-14) and (15-17) now permit cold air intake.
As printed in Fastrack
In T3 Spec Lines, Ford Mustang V6 (11-14), add to Notes the following: "Cold air intake permitted." In T3 Spec Lines, Ford Mustang V6 (15-17), add to Notes the following: "Cold air intake permitted."
Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett
In T2, Effective 1/1/2025, delete for following Spec Lines in their entirety: "Acura TL SHAWD (10-13) Audi S4 (12-14) Audi S5 (13-14) Audi TT RS (2018-) Cadillac ATS-V (16-17) Cadillac CTS-V (06-07) Chevrolet Camaro SS (98-02)
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Honda Civic Type-R (2017-) Saturn Sky / Convertible (07-09)" In T3, Effective 1/1/2025, delete for following Spec Lines in their entirety: "Audi TTS Coupe (10-11) Cadillac ATS (2015) Chevrolet Cobalt (05-07) Dodge SRT-4 (03-05) Ford Fiesta ST (2014-) Hyundai Genesis Coupe (2010-) Hyundai Veloster Turbo (18-21) Mini Cooper S (2016-) Toyota Camry (11-15)" In T4, Effective 1/1/2025, delete for following Spec Lines in their entirety: "Acura Integra GS-R VTEC (3 or 4 door) (94-01) Audi A4 V-6 (96-01) / Volkswagen Passat 2.8 V6 (96-05) Chevrolet Cobalt SS, Sport Coupe (06-10) Chevrolet Sonic RS (2011-) Chrysler/Dodge Neon ACR SOHC (4 door) (01-02) Dodge Dart (14-15) Dodge/Plymouth Neon ACR SOHC/DOHC (2/4 door) (95-99) Fiat 500 Abarth (12-14) Ford Focus SVT (02.5-04) Ford Focus ZX4 ST (05-06) Ford Focus (08-11) Ford Mustang V-6 (01-04) Honda Accord LX & EX (03-07) Honda Accord LX-S/EX/EX-L (08-12) Honda Civic Coupe Si (99-00) Honda Civic SI (02-03) Hyundai Elantra GLS (11-12) Hyundai Tiburon V-6 (03-08) Hyundai Veloster Turbo/ R-Spec (14-15) Kia Forte Koup and Sedan LX/EX (10-13) Kia Forte Koup and Sedan SX (10-13 Kia Forte Koup (14-15) Mazda Protégé ES (2000) Mazda Protégé 5 (02-03) Mazda6 s (03-07) Mitsubishi Eclipse GT (00-05) Nissan Sentra SER (02-03) Pontiac Firebird V-6 (96-02) Scion tC (03-07) Subaru Impreza (non-turbo) (04-06) Toyota Celica GT (00-05) Toyota Celica GTS/GT (00-05) Volkswagen Golf TDI (2010) Volkswagen Passat (12-14) Volkswgen Passat TDI (12-14) Volkswgen Passat 1.8T (2014-)"
unclearGT1-ST restrictor sizes removed for 13 cars; new specs not printed in letter.
As printed in Fastrack
In GT1-ST SPEC LINES, change as follows: Aston Martin Vantage GT3 (2012) : Restrictor: "2 x 41.5mm" Audi R8 LMS Ultra GT3 (10-14) : Restrictor: "2 x 49mm" BMW Z4 GT3 (10-13): Restrictor: "70mm" Chevrolet Corvette C8 (20-):
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Restrictor: "71mm- Flat Plate" Dodge Viper GT3R (2012-): Restrictor: "2 x 40mm" Dodge Viper, incl Comp Coupe, ACR/ACR-X Max Displacement 8400, Weight 3200: Restrictor: "68mm flat plate" Ferrari 458 GT3 (2011-): Restrictor: "2 x 43mm" Lamborghini Gallardo GT3 (2013): Restrictor: "2 x 47mm" Lamborghini Huracan GT3 EVO(1) (2018-): Restrictor: "2 X39mm" McLaren MP12C GT3 (2013-): Restrictor: "2 x 36mm 1.50 bar" Lamborghini Huracan GT3 (2019-): Restrictor: "2 x 40 mm" McLaren MP12C GT3 (2013-): Restrictor: "2 x 40 mm" Mercedes Benz SLS GT3 (2011-): Restrictor: "2 x 36 mm" Porsche 991 GT3-R (2016): Restrictor: "(2) 35 mm" Porsche 997 GT3 R (2013-): Restrictor: "65mm"
FP Create ruleset that allows GTL cars to run in FP
cars addedF Production now allows GT-Lite cars meeting Appendix N specifications to compete, effective 2025-01-01.
As printed in Fastrack
“(Effective January 1, 2026) (Effective January 1, 2025)." Any GT-Lite (GTL) car meeting all of the requirements of Appendix N GT-LITE CATEGORY SPECIFICATIONS for inclusion into F PRODUCTION" may compete in the F-Production class. For GTL cars competing in FP, the level of preparation and modifications will be determined by Appendix N and not by PCS 9.1.5.”
cars addedAcura NSX GT3 EVO 22 classified in GT1 with 3500cc twin turbo V-6, 3100 lbs, max RPM 7500.
As printed in Fastrack
In GT1 Spec Lines, GT 1 Cars - ACURA, classify Acura NSX GT3 EVO 22 as follows: GT 1 Cars - ACURA Model Years Body Style Drive- line Wheel- base (in) Notes Acura NSX GT3 EVO 22 N/A 2dr RWD 103.5 Ground Clearance 50mm
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In GT1 Spec Lines, GT 1 Engines - ACURA, classify Crossflow V-6 as follows: GT 1 Engines - ACURA Engine Family Engine Type Bore x
A specification table follows in the original; it is not shown here.
cars addedFP GTL Volkswagen Jetta Mark IV 4dr FWD 98.2 wheelbase newly classified.
As printed in Fastrack
In FP Spec Lines, Appendix N, GTL-FP Cars - Volkswagen, classify Jetta Mark - IV as follows: GTL-FP Cars - VOLKSWAGEN Model Years Body Style Drive-line Wheelbase (in) Notes Jetta Mark - IV 4dr FWD 98.2
inductionFP Spec Lines option: carburettor chokes permitted as alternative to SIR, same size as listed SIR.
As printed in Fastrack
In FP Spec Lines, Appendix N: L.9, Fuel Injection System, add the following: "As an option, induction system “Chokes” may be used where a SIR is required. Said chokes shall be fitted to each barrel of carburetor/throttle body and all airflow into engine must pass through them. Choke size will be the same as listed SIR unless noted."
fasterHP Ford Festiva 88-93 minimum weight drops to 1600 lbs, variants to 1640 and 1680 lbs; compression ratio raised to 11.0:1.
As printed in Fastrack
In HP Spec Lines "Ford Festiva (88-93)" change as follows: Weight: "1700 1600 *1743 1640 **1785 1680" Notes: "Compression ratio limited to 10.5 11.0:1. Valve lift limited to .450”."
unclearT3 BMW Spec E46 rules updated to Version 3.0 from Version 1.1.
As printed in Fastrack
In T3 Spec Lines, BMW Spec E46, change Notes as follows: "Must conform to all SpecE46 rules Version 2.10. Version 1.1 dated Jan. 6, 2025. Version 3.0."
FP Base Weight Adjustment for H-Production X1/9 Spec Lines
unclearBMW Spec E46 in T3 updates to SpecE46 rules Version 3.0.
As printed in Fastrack
In T3 Spec Lines, BMW Spec E46, change Notes as follows: "Must conform to all SpecE46 rules Version 2.10. Version 1.1 dated Jan. 6, 2025. Version 3.0."
cars addedGT1 LS Limited Prep Engine expands to include LS1, LS2, LS3, LS6 with 11:1 max compression.
As printed in Fastrack
In GCR, Section 9.1.2. GT1 Spec Lines, GT1 Approved Automobile List, LS1 engine allowed with stock intake, make the following change: "LS1 Limited Prep GT1 Motor Chevy LS Limited Prep Engine including LS1, LS2, LS3 and LS6." "Pistons: Factory or aftermarket flat top pistons only, valve reliefs allowed, coatings allowed. Maximum compression ratio 11:1."
wordingEP, FP, HP throttle body inside dimensions must remain stock with +/-.25mm tolerance; butterfly dimensions stock in FP, HP only.
As printed in Fastrack
In GCR, Section 9.1.5.E., change as follows: 9.1.5.E.1.b.4: "The inside dimensions of the throttle body casting/housing (as measured at the throttle butterfly) must remain stock (tolerance of +/-.25mm), but the throttle body can otherwise be ported and polished." 9.1.5.E.2.b.4: "The inside dimensions of the throttle body casting/housing and all dimensions of the throttle butterfly must remain stock (tolerance of +/-.25mm)."
GT1 RM 25-06 GT1 reclassify the Acura NSX GT3 EVO 22 to GT1-ST
cars addedAcura NSX GT3 EVO 22 reclassified from GT1 to GT1-ST with 3100 lbs minimum weight.
As printed in Fastrack
IN GT1 reclassify the Acura NSX GT3 EVO 22 to GT1-ST as follows: GT1 Approved Automobile List Make/Model Wheelbase ACURA NSX GT3 EVO 22 103.5” DOHC 4v per cylinder EFI Twin Turbo Crossflow V-6 Displacement 3500cc Bore and Stroke 91x90 MAX RPM 7500 MAX BOOST 2.1 bar Weight 3100 lbs GT1-ST Maximum
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Displacement Minimum Weight Restrictor Notes ACURA NSX GT3 EVO 22 3500cc 3100 Per FIA Homologation GT3-047
slowerHP Volvo 142/142E gains compression ratio limit 12.0:1 and valve lift limit .425".
As printed in Fastrack
In HP Spec Lines, Volvo 142/142E P-1800 Engine, Effective 11/1/2025 add the following wording to Notes: "Comp. Ratio limited to 12.0:1. Valve lift limited to .425”."
slowerHP Mini Cooper 07-15 valve lift reduced to .390", from .450".
As printed in Fastrack
In HP Spec Lines, Mini Cooper (07-13) (includes 09-15 convertible and 12-15 Coupe), Effective 11/1/2025 make the following changes to the Notes: "Compression ratio limited to 11.0:1, Valve lift limited to .450”.390"."
wordingFP and HP Volkswagen Rabbit descriptions updated: Convertible changed to Cabriolet in FP; Cabriolet added to three HP engine variants.
As printed in Fastrack
In FP Spec Lines, make the following spec line correction: "Volkswagen Rabbit (Includes Convertible Cabriolet)" In HP Spec Lines, make the following spec line correction: "Volkswagen Rabbit 1588 (Includes Cabriolet)" "Volkswagen Rabbit 1715 (Includes Cabriolet)" "Volkswagen Rabbit 1780 (Includes Cabriolet)"
wordingEP, FP, HP: rear drum brake to disc conversion clarified; rotors solid, diameter limited to largest front rotor permitted.
As printed in Fastrack
In GCR, Section 9.1.5.E.7., change as follows: "e. Cars fitted with rear drum brakes, can convert to rear disc brakes without penalty. Note that the “Brakes Std.” and “Brakes Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes stock, from converting to rear disc brakes under this rule. When converting from rear drum brakes to rear disc brakes: 1. Rear brake rotors must be solid and can be no larger in diameter than the largest permitted front brake rotor, as defined on the vehicle’s spec line. 2. Rear calipers and mounting brackets are unrestricted but must be made of a ferrous or aluminum material. The standard and alternate brake listings on a vehicle’s specification line, does not prohibit a car that was fitted with rear drum brakes as stock
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from converting to rear disc brakes under this rule. 3. The “Brakes Std.” and “Brakes Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes as stock from converting to rear disc brakes under this rule."
wordingT3 and T4 Mazda MX-5 Miata models add approved gear kit PT#-0000-02-6100 to notes.
As printed in Fastrack
In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-24), add to Notes the following: "Gear kit Kit PT#- 0000-02-6100." In T4 Spec Lines, Mazda MX-5 Miata/Club (16-18), add to Notes the following: "Gear kit Kit PT#- 0000-02-6100." In T3 Spec Lines, Mazda MX-5 Miata (16-18), add to Notes the following: "Gear kit Kit PT#- 0000-02-6100." In T3 Spec Lines, Mazda MX-5 Global Cup Miata (2016-2021) ND1, ND, add to Notes the following: "Gear kit Kit PT#- 0000-02-6100."
wordingT4 Mazda MX-5 Miata/Club/RF (19-24) and (16-18) remove discontinued hardtop part #0000-07-5901; T3 MX-5 Miata (16-18) and Global Cup ND (16-21) same.
As printed in Fastrack
In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-24), change Notes as follows: "Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. The following item(s) must remain stock: transmission differential unless specified below. Retractable hardtop option permitted but must be disabled from moving action and positively fastened. Any OEM or aftermarket hardtop is permitted that retains the OEM roof silhouette, including Mazda hardtop part #0000-07-5902-ND and part #0000-07-5901 (discontinued DG Motorsports). 29mm (f) 16mm (r) sway bars allowed. 3rd and 4th gear may be replaced with the following parts- (0000-02-5803-02, 0000-02-5803-01, 0000-02-5804-02, 0000-02-5804-01). Suspension package permitted with a 100 lbs. weight increase that includes the following parts: front springs #0000-04-9700-08, springs up to 500lb front and 300lb rear allowed. Mazda tower brace 0000-04-5626 allowed. Mazda header
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0000-06-5410 allowed." In T4 Spec Lines, Mazda MX-5 Miata/Club (16-18), change Notes as follows: "Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. Retractable hardtop option permitted but must be disabled from moving action and positively fastened. Any OEM or aftermarket hardtop is permitted that retains the OEM roof silhouette, including Mazda hardtop part #0000-07-5902-ND and part #0000-07-5901 (discontinued DG Motorsports). 29mm (f) 16mm (r) sway bars allowed. Up to 500lb front and 300lb rear springs allowed. Mazda Motorsports Header part #0000-06-5410 allowed. Mazda tower brace 0000-04-5626 allowed. 3rd and 4th gear may be replaced with the following parts- (0000-02-5803-02, 0000-02-5803-01, 0000-02-5804-02, 0000-02-5." In T3 Spec Lines, Mazda MX-5 Miata (16-18), change Notes as follows: "Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. Header permitted. Cold air intake permitted. Front strut brace permitted. Front and rear sway bars permitted up to 35mm, Springs 800 front and 800 Rear max permitted. Any OEM or aftermarket hardtop permitted that retains the OEM roof silhouette including Mazda hardtop part #0000-07-5902- ND and part #0000-07-5901 (discontinued DG Motorsports top). If a hardtop is used, latches shall be replaced with positive fasteners. Retractable hardtop option permitted but must be disabled from moving action and positively fastened. In T3 Spec Lines, Mazda MX-5 Global Cup Miata (2016-2021) ND1, ND, change Notes as follows: "Shoulder harness installation must conform to FIA mounting specifications that are approved for this vehicle per section 6.2 FIA article 253, safety equipment. Must meet all ND2 MX-5 Global Cup rules. Any OEM or aftermarket hardtop is permitted that retains the OEM roof silhouette, including Mazda hardtop Mazda hardtop part #0000-07-5902-ND and #0000-07-5902-ND part #0000- 07-5901 (discontinued DG Motorsports). If a hardtop is used, latches shall be replaced with positive fasteners. OBD2 requirement does not apply. Ballast box may be removed. ND2s with sequential gearbox allowed +100 lbs.
unclearEP Triumph TR2-TR4A allows 5-speed gearbox without overdrive; removes Weber carb and weight specification.
As printed in Fastrack
In EP Spec Lines, Triumph TR2, 3, 3A, 4, 4A, TR4, TR4A, IRS, make the following change to the Notes: "Front apron assembly may be made of alternate material. Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990 lbs. Laycock overdrive, may use 5 speed gearbox without overdrive."
unclearT3 Ford Mustang EcoBoost loses optional 2-piece 355mm Brembo rotor brake kit option with 50 lb penalty.
As printed in Fastrack
In T3 Spec Lines, Ford Mustang EcoBoost (2015-), change Notes as follows: ", or optional 2-piece rotor 355mm max Brembo brake kit #M-2300-S allowed with +50lb penalty."
Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett
fasterT3 BMW Spec E9X tire width increases to 255 from 225; spec E9X tire or any DOT permitted.
As printed in Fastrack
In T3 Spec lines, BMW Spec 9X, change as follows: Car: "BMW Spec 9X BMW Spec E9X" Notes: "Must conform to all SpecE9X rules Version 2.10. Spec E9X spec tire permitted or any DOT permitted up to 225 255 permitted. No other touring allowances permitted. Engines may not be modified unless specified in the Spec E46 rules and must conform to touring tech procedures. Driver must possess a current copy of the rules. Dyno results do not ensure engine compliance. THIS SPEC LINE DOES NOT QUALIFY FOR SCCA RUNOFFS COMPETITION UNTIL IT HAS BEEN REPRESENTED IN 3 SCCA SUPER TOUR EVENTS."
fasterT3 SpecE46 permitted tire width increases from 225 to 245.
As printed in Fastrack
In T3 Spec Lines, BMW SpecE46, change Notes as follows: "Must conform to all SpecE46 rules Version 3.0. SpecE46 spec tire permitted or any DOT permitted up to 225 245 permitted. No other touring allowances permitted. Engines may not be modified unless specified in the Spec E46 rules and must conform to touring tech procedures. Driver must possess a current copy of the rules. Dyno results do not ensure engine compliance. SE46 HP limit does not apply."
GT1 NSX Parity With Other GT3s Let Alone a GT1 Car
wordingT2, T3, T4 cars may relocate under-dash electronics and fuse boxes for access after roll cage installation.
As printed in Fastrack
In GCR, Section 9.1.9.2.D.9.d, add the following: "8. Under-dash electronics including computers, modules and fuse boxes may be relocated so they can be easily accessed after roll cage installation."
suspension & brakesT4 Performance now permits 1-piece alternative rotors matching spec line sizes; alternate brake kits allowed same.
As printed in Fastrack
In GCR, Section 9.1.9.2.D.6.a.6., change as follows: "In T2-Performance alternative rotors, including 2 piece rotors are permitted. Rotors must be within 5% of OE diameter or a maximum diameter of 360mm. In T3- Performance alternative rotors, including 2 piece rotors are permitted with a maximum diameter of 360mm. T4- Performance alternative 1-piece rotors are permitted but rotors must meet the sizes listed in the spec line. Spec lines showing alternate brake kits are also permitted to use 1-piece performance alternative rotors of the same size."
cars addedGT1 adds Porsche 992.1 GT3 Cup (2022-2025) with OEM ABS, traction control, RSR bumper, canards, and any exhaust allowed.
As printed in Fastrack
In 9.1.2. GT1 Spec Lines, add the following: "992.1 GT3 Cup (2022-2025) OEM ABS and Traction Control allowed. Porsche OEM RSR bumper and canards allowed. Any exhaust system may be utilized."
T3 Please change 2011-2014 Mustang V6 Spec Line to 2005-2014
unclearFP Fiat X1/9 gains dual carburetor options with 28mm side-draft alternates and revised valve/transmission specs.
As printed in Fastrack
In FP Spec Lines, change as follows: Fiat X-1/9 & Bertone 1300: "(1) Weber 32 DMTR or DATRA/100 w/32mm bores (1) 40 DCNF w/32mm choke(s) (2) auto-type side-draft w/28mm choke(s) on I.R. manifold Orientation of the alternate carburetor is unrestricted. The alternate carb adapter may not be thicker than 1.25”. The adapter may have a bore larger than the throttle bore of the approved alternate carburetor. Valve Size: (I) 35.5/(1.40) (E) 31.3/(1.23)30.5/(1.20) (E) 1.23
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Trans. Speeds: 5" Fiat X-1/9 & Bertone: "Fuel Injection (1) 34 DMTR, (1) 36 DCNF w/34mm choke(s), or (1) 40DCNF w/34mm choke(s) (1) 36 or 40 DCNF w/34mm choke(s) (2) auto-type side-draft w/28mm choke(s) on I.R. manifold Orientation of the alternate carburetor is unrestricted. The alternate carb adapter may not be thicker than 1.25”. The adapter may have a bore larger than the throttle bore of the approved alternate carburetor. Valve Size: (I) 35.5/(1.40) (E) 33.0/(1.30) Trans. Speeds: 5 or 4"
fasterT2-T4 adjustable toe links now allow performance alternative bushings and spherical bearings, previously prohibited except in specified examples.
As printed in Fastrack
In GCR, Section 9.1.9.D.5.a.1., change as follows: "T2-T4: A maximum of 3.5 degrees of negative camber is allowed on front and rear suspensions. Spec line part(s) may not be modified to increase caster and camber. Strut suspensions may adjust camber and caster by the use of eccentric bushings, eccentric bolts (crash bolts) at the strut-to-spindle, and/or by use of slotted adjustment plates at the top of the strut mounting plate. If upper strut slotted adjustment plates are used, they shall be located on existing chassis structure, utilizing the unmodified manufacturer’s original bolt holes and may not serve as reinforcement for that structure. Slotted adjustment plates (strut camber plates) may incorporate a single spherical bearing (spherical bushing) and a ball thrust bearing per strut tower. On other forms of suspension, camber and caster adjustment may be achieved by the use of shims and/or eccentric
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bushings. Adjustable toe links with spherical bearings are permitted and may serve no purpose other than adjusting toe angle. Adjustable toe links are permitted. They are allowed to have performance alternative bushings and spherical bearings. They may serve no purpose other than adjusting toe angle. Spherical bearings/bushings are not permitted in T2-T4 except for the specific examples listed in the class rules or vehicle spec line."
What the rules allowed changed as listed; this does not say what any particular car ran.