This track has been raced on 4 configurations (The Circuit, 2.57 mi; 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
Formula Enterprise
FE2
1
1:12.402Blake Pigeon
1:12.402Blake Pigeon
SCCA Ent FE2
FE2
7
1:13.988John Yeatman
1:13.988John Yeatman
1:39.712Paul Marino
156.6Paul Marino
27.234Paul Marino
28.582Paul Marino
43.028Jon McClintock
SCCA Ent FE2 (2007)
FE2
1
1:13.988John Yeatman
1:13.988John Yeatman
SCCA Ent FE2 (2010)
FE2
1
1:14.003Thomas W Burt
1:14.003Thomas W Burt
SCCA Ent FE2
FE2
5
1:39.265Jon McClintock
1:39.265Jon McClintock
1:39.712Paul Marino
156.6Paul Marino
27.234Paul Marino
28.582Paul Marino
43.028Jon McClintock
Pro Formula Mazda
FA
1
1:14.588Greg Labadie
1:14.588Greg Labadie
Swift 016
FA
1
1:35.792Greg Labadie
1:35.792Greg Labadie
1:37.275Greg Labadie
163.8Greg Labadie
26.713Greg Labadie
26.816Greg Labadie
41.822Greg Labadie
Chevrolet Camaro
GT2
3
1:42.698Tim Carroll
1:42.698Tim Carroll
1:44.128Tim Carroll
149.2Jean Meynet
28.543Jean Meynet
29.839Tim Carroll
44.262Tim Carroll
Ford Mustang
GT2
1
1:45.818Brad McAllister
1:45.818Brad McAllister
1:46.926Brad McAllister
115.9Brad McAllister
28.729Brad McAllister
30.833Brad McAllister
45.847Brad McAllister
Dodge Challenger
GT2
1
1:46.922Ben Valentine
1:46.922Ben Valentine
1:47.171Ben Valentine
132.9Ben Valentine
29.689Ben Valentine
30.929Ben Valentine
45.990Ben Valentine
Porsche GT3
GT2
2
1:47.914Rocky Crocker
1:47.914Rocky Crocker
1:48.433Rocky Crocker
155.7Rocky Crocker
29.826Rocky Crocker
31.456Rocky Crocker
46.030Rocky Crocker
Porsche GT3
GT2
1
1:47.914Rocky Crocker
1:47.914Rocky Crocker
1:48.433Rocky Crocker
155.7Rocky Crocker
29.826Rocky Crocker
31.456Rocky Crocker
46.030Rocky Crocker
Porsche GT3 Cup
GT2
1
1:57.745Robert Kelley
1:57.745Robert Kelley
1:58.760Robert Kelley
125.1Robert Kelley
32.864Robert Kelley
33.998Robert Kelley
50.578Robert Kelley
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 Corvette
GT2
1
1:49.904Igor Lyustin
1:50.345Igor Lyustin
1:49.904Igor Lyustin
145.8Igor Lyustin
30.271Igor Lyustin
31.850Igor Lyustin
47.568Igor Lyustin
Mazda RX-7
GT2
3
1:51.013Guy Laidig
1:51.013Guy Laidig
1:52.486Guy Laidig
138.7Guy Laidig
30.134Guy Laidig
32.225Guy Laidig
47.907Guy Laidig
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
Dodge VIPER
GT2
1
1:57.753Robert Kelley
2:00.453Robert Kelley
1:59.538Robert Kelley
92.9Robert Kelley
31.983Robert Kelley
33.965Robert Kelley
51.553Robert Kelley
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
#33752 from Formula/Sports Racing Committee · Rule change · TB 23-03 (2023-03 Fastrack)
neutralFF Honda Fit engine adds Fast Forward part number alternatives for intake, exhaust, oil system, and scavenge pump components.
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."
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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."
GT2 Adding Ginetta G56 GTA Factory ProTune for GT2 Class
#33825 from Robert Mueller · Rule change · TB 23-04 (2023-04 Fastrack)
unclearGT2 Ginetta G56 GTA may now use Factory installed ProMap ECU Map.
In GT Cars - Ginetta, Ginetta G56 GTA, add to Notes as follows: "May use Factory installed ProMap ECU Map."
GT2 Request to class 2011 Porsche Cayman S
#33771 from Coyote Black · Rule change · TB 23-05 (2023-05 Fastrack)
neutral2009-2012 Porsche Cayman S classified in GT2, 3.4L, RWD, no PDK transmission allowed.
In GT Cars - Porsche, classify Porsche Cayman ‘S’ as follows: GT Cars - Porsche Model Years Body Style Drive- line Wheel- base (in) Notes Porsche Cayman ‘S’ 09-12 2 dr. Coupe RWD 95.08 3.4L No PDK Transmission
GT2 Please classify Fields Cardinal V8
#33784 from James Rogersn · Rule change · TB 23-05 (2023-05 Fastrack)
neutralFields Cardinal V8 classified in GT1 with Ford V8 engine, 4.9L displacement, 2100 lbs minimum weight.
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.
FA E&O - Correct Pro Formula Mazda spec line dimensional equivalent
#34085 from Club Racing Board · Rule change · TB 23-05 (2023-05 Fastrack)
fasterFA Pro Formula Mazda maximum bodywork width behind front wheels increases to 51.97 inches.
In FA Table 2, Pro Formula Mazda spec line, change as follows: "The overall maximum width of the bodywork behind the front wheels shall not exceed 132cm (51.17 51.97 inches)."
FA Add new spec line for MSR Formula Mazda FMzR to Table 2
#34139 from Club Racing Board · Rule change · TB 23-05 (2023-05 Fastrack)
neutralFA MSR Formula Mazda FMzR added to Table 2 classification.
RM 23-06 – MSR - FMzR Formula Atlantic Classification dated 4/21/2023 In FA Table 2, add a spec line as follows:
FA Simplify Pro Formula Mazda wheel allowance
#34190 from Club Racing Board · Rule change · TB 23-06 (2023-06 Fastrack)
unclearFA Pro Formula Mazda front wheels widen to 10 in. max; rear wheels narrow to 14 in. min.
In FA, Pro Formula Mazda spec line, change wheel width as follows: "Pro Mazda series wheels
A specification table follows in the original; it is not shown here.
GT2 appendix letter #33635
#34206 from Ian Barberi · Rule change · TB 23-06 (2023-07 Fastrack)
neutralGT2 BMW engines: 3.4L 6-cyl at 2575 lbs, 4.0L V8 at 2900 lbs, 4.5L V8 at 2950 lbs, 5.0L V8 at 3000 lbs; S54 with 97mm stroke permitted at 2800 lbs.
In GT2-ST Spec Lines, BMW E46 M3 & E36 / BMW Z3 / BMW 5000cc V8, change notes as follows: "The 3.4 liter 6 cyl. (87.0 bore x 93.0 stroke) is permitted at 2575lbs. 4.0L V8 permitted at 2900lbs. 4.5L V8 permitted at 2950lbs. 5.0L V8 permitted at 3000lbs. Flossman body kit permitted as found at http://www.racingpartsbmw.de/start/eng/start.htm. Trans Am SGT spec: Regular shifter 3000 lbs., paddle shifter plus 150 lbs. 95mm S54 crankshaft @ +150lbs. Lang Racing part# S54-95mm-StrokerCrk. S54 engine is permitted a 97mm stroke crankshaft (part #VAC-SC-S54) @2800lbs."
GT2 Remove Weight and Restrictor Penalty for Corvette C7 Body
#34342 from Jorge A Nazario · Rule change · TB 23-06 (2023-07 Fastrack)
fasterGT2 Corvette C7 restrictor increases from 73mm to 77mm flat plate, removing weight penalty.
In GT2/ST, Chevrolet Corvette (2014-2019) change as follows: Restrictor: "73 7mm flat plate"
GT2 GT2 Mazda 20B 3 rotor ENO
#34765 from Grand Touring Committee · Rule change · TB 23-09 (2023-09 Fastrack)
fasterGT2 Mazda 20B 3 rotor loses 220 lbs, to 2280, consolidating two spec lines.
In GT2 Spec Lines, Engines - MAZDA, combine both 20B to one spec lines and keep the following: Weight: "2500 2280" Notes: "Must run +100 lbs. for Grand Am transaxle and independent rear suspension. Must comply with all other GT2 rules."
GT2 Late E & O
#34966 from Scotty B White · Rule change · TB 23-10 (2023-10 Fastrack)
fasterGT2-ST Dodge Viper including Comp Coupe, ACR/ACR-X with VRL front fascia loses 100 lbs.
RM 23-10 GT2-ST Dodge Viper, incl Comp Coupe, ACR/ACR-X VRL Front Fascia As an Errors and omissions fix to what was originally intended for these cars, the Club Racing Board and Board of Directors have approved the following: In GT2-ST, Dodge Viper, incl Comp Coupe, ACR/ACR-X add VRL front fascia -100lbs to all Spec Lines.
GT2 Errors in GTCS Headings and Use of the Terms Category and ClassChange existing GTL and GTA Rules
#34453 from David Gomberg · Rule change · TB 23-12 (2023-12 Fastrack)
neutralGTL spec lines moved to contiguous position with GT2 and GT3; GTA category and spec lines renumbered and moved behind GTL.
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
#35200 from Sean McCann · Rule change · TB 24-01 (2024-01 Fastrack)
slowerGT2-ST Dodge Viper hybrid kit restrictor reduced from 50mm to 45mm flat plates.
In GT2-ST Spec Lines, Dodge Viper, incl Comp Coupe, ACR/ ACR-X change NOTES as follows: 8300 OEM: "Stock OEM engine. Engine long block, valve train, and intake system must meet stock, shop manual specifications. Hybrid update including Mopar Performance Part #P5156137. May use Mopar part #5038554AF (Gen 5 Intake Manifold manifold allowed with (2) 55mm flat plates) and 8.4L mechanical throttle body allowed. VRL Front Fascia -100lbs." 8300: "Hybrid update including Mopar Performance Part # P5156137, Mopar part #5038554AF manifold and 8.4L mechanical throttle body allowed using (2) 50 45mm flat plate restrictors. VRL Front Fascia –100lbs." 8400: "Intake and Throttle Body from Mopar Performance Part # P5156137allowed using (2) 50 45mm flat plate restrictors. , Mopar part #5038554AF manifold (Gen 5 Intake Manifold allowed with (2) 50mm flat plates) VRL Front Fascia -
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100lbs 8400 OEM 3225 Stock OEM engine. Engine long block."
neutralFF Honda Fit gains Fast Forward FF800-100 oversize piston ring pack option.
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.
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.”
GT2 REDUCE C6 CORVETTE WEIGHT WITH OEM 7 LITER ENGINE REDUCE BY 150LB
#35385 from Mike McGinley · Rule change · TB 24-02 (2024-02 Fastrack)
fasterGT2 Chevrolet Corvette 7011 OEM 7 liter weight reduced 150 lbs, to 3125 lbs.
In GT2/ST Chevrolet Corvette 7011 OEM change weight as follows: “3275 3125“
GT2 GT Direct Injection allowance and rules
#35437 from Grand Touring Committee · Rule change · TB 24-02 (2024-01 Fastrack)
fasterGT1/GT2/GT3/GTL/GTX Direct Injection now permitted if OE, using only OE pump, hoses, injectors.
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.”
GT2 GT2/3 remove Direction Injection not allowed in Spec line notes
#35439 from Grand Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)
fasterGT2/3 Nissan, Mazda, Mitsubishi 4G93, QR25DE/DD, QE25DE/DD Direct Injection now permitted per 9.1.2.F.7.5.E.
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
GT2 Classify Corvette C8 (2020- ) into GT2/ST
#33759 from Andrew Aquilante · Rule change · TB 24-03 (2024-03 Fastrack)
neutralChevrolet Corvette C8 (2020–) classified into GT2-ST with 6162cc displacement, 3300 lbs minimum weight, 71mm restrictor.
In GT2 Spec Lines, classify Chevrolet Corvette C8 (20-) as follows: GT2-ST Maximum Displacement Minimum Weight Restrictor Notes Chevrolet Corvette C8 (20-) 6162 3300 71mm - Flat Plate LT2 engine.
Applies to Chevrolet Corvette on this page: Igor Lyustin
GT2 Requesting classification for a 2015 Mitjet ST in GT2
#35408 from Jim Froula · Rule change · TB 24-03 (2024-03 Fastrack)
neutral2015 Mitjet ST added to GT2, must run per VTS specifications with complete FIA form CdM008.
In GT2 Spec Lines, GT Cars - MITJET ST, classify MITJET ST as follows: GT Cars – MITJET ST Model Years Body Style Drive- line Wheel- base (in) Notes MITJET ST 2015 RWD 94.5 Must run per VTS specifications. Must have
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complete car Specifications (FIA form CdM008) at every entered race event.
neutralGT2-ST allows aftermarket replacement differential housings if exact equivalents.
In GCR Section, Appendix K. 2012.M2, add the following: "After market replacement differential housings are permitted as long as they are an exact equivalent."
GT2 GT4 cars may run in GT2-ST
#36235 from Grand Touring Committee · Rule change · TB 24-07 (2024-07 Fastrack)
neutralGT4 cars now permitted in GT2-ST with factory restrictor, must comply with 2012 STO rules, slicks allowed with 100-pound penalty.
In 9.1.2. GT2 Spec Lines, GT3 Cars, change Note as follows: "Note: All GT4 cars are permitted to compete in GT2-ST provided they use a factory supplied power stick or Pro Series required restrictor. Must have GT4 rules in possession at all race events. Cars must comply with 2012 STO rules as stated in Appendix K of the GCR. Engine Displacements in this table are nominal. Each competitor shall have available definitive documentation (e.g., factory manual) of the original displacement for the engine used. Slicks allowed on all GT2/ST cars with a 100-pound weight penalty."
FF Update to FF EGR Blanking Plate Rule
#36633 from Matt Boian · Rule change · TB 24-10 (2024-10 Fastrack)
neutralFF VTEC activation valve must function; EGR blanking plate rule clarified with Fast Forward part numbers.
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."
FF Change FF/FC Weight with Sequential Gearbox
#36651 from Robert Wright · Rule change · TB 24-11 (2024-11 Fastrack)
fasterFF and FC cars with sequential gearbox must add 10 lbs. to minimum weight, down from 25 lbs.
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."
FF Alternative Oversize Honda Fit Pistons
#37064 from Formula/Sports Racing Committee · Rule change · TB 24-11 (2024-11 Fastrack)
neutralFF Honda Fit allows Fast Forward 0.25mm oversize pistons PN FF800-110 as alternative; piston diameter spec clarified to 2.8835 inches.
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).
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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)."
GT2 Panoz Esperante GTS BOP
#36686 from Brian Goldburg · Rule change · TB 25-01 (2025-01 Fastrack)
In GT2 SPEC LINES, GT Engines - PANOZ, classify 2013-2016 Ford EcoBoost Twin Turbo as follows: GT Engines – PANOZ Engine Family Engine Type Bore x Stroke (in.) Disp.
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(CC) Head Type Valves /
A specification table follows in the original; it is not shown here.
GT2 Correct language regarding OEM Areo Devices
#37137 from Christopher Childs · Rule change · TB 25-01 (2025-01 Fastrack)
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.
GT2 GT2 Sunbeam Tiger Alternate Carburetor
#37198 from Tom Patton · Rule change · TB 25-01 (2025-01 Fastrack)
#36538 from Jorge A Nazario · Rule change · TB 25-02 (2025-02 Fastrack)
fasterGT2 STO aftermarket ABS weight penalty reduced from 100 lbs to 50 lbs.
In GCR, Appendix K. 2012 STO Rules, O.9., change as follows: "May run OEM ABS or convert to an aftermarket ABS controller with 100 50 lb. weight penalty."
FA Classify FR European Championship car as spec line car in Table 2
#37658 from Club Racing Board · Rule change · TB 25-02 (2025-02 Fastrack)
neutralFA adds Tatuus F.3 T-318 or FR-19 as spec line car in Table 2 for Formula Regional European Championship.
In FA Table 2, add the following: Table 2 (Spec Line Cars) Car Engine Wheel Width (in) ± .060 Aero Transmission Weight Notes
A specification table follows in the original; it is not shown here.
Cal Club 2025 → Cal Club 2026 2025-02-22 to 2026-02-21
GT2 Hood Bulge allowed
#37000 from Gordon Leslie · Rule change · TB 25-03 (2025-03 Fastrack)
unclearGT2 Pontiac Fiero changes from FWD to RWD; hood bulge permitted for front engine relocation.
In GT2 Spec Lines, GT2 Cars - PONTIAC, Fiero, change as follows: Drive-line: "FWD RWD" Add to Notes: "Hood bulge permitted as requested for front engine relocation only."
GT2 OEM Wing Adjustment
#37590 from Christopher Childs · Rule change · TB 25-03 (2025-03 Fastrack)
slowerTA2 and STO OEM wings no longer exempt from rear wing height rule at roof peak.
In GCR, Section APPENDIX L. 2013 TA2 TECHNICAL REGULATIONS, B.2.c., change as follows: "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." In GCR, Section APPENDIX K. 2012 STO GENERAL TECHNICAL REGULATIONS, D.4.b., add the following: "Factory wings, and spoilers, and roof vortex generators are permitted, but must be removed if an approved aftermarket wing is installed. OEM aerodynamic devices do not need to adhere to the height rule."
FF Formula F Proposal to Invite Older Cars Via a Tire Rule Change
#37802 from Anthony Stefanelli · Rule change · TB 25-03 (2025-03 Fastrack)
fasterFF allows older cars with rocker arm or outboard suspension to use bias ply slicks or VFF tires instead of radials.
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
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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."
FA Update Formula Renault 2.0 spec line notes
#37853 from Club Racing Board · Rule change · TB 25-03 (2025-03 Fastrack)
neutralFA Formula Renault 2.0 (10-17) spec notes clarified: engine sealed, manual compliance required, tire choice unrestricted, no alterations except repairs.
In FA Table 2, Formula Renault 2.0 (10-17) spec line, change the notes as follows: "Engine must remain sealed. Car must comply with year-specific Formula Renault 2.0 manual, technical regulations, and all applicable bulletins found here:. Competitors must have copies of these materials in their possession and present them upon request. https://sites.google.com/a/renault-sport.com/formule-renault-2-0-en/bulletins-techniques/2017, https://sites.google.com/a/renault-sport.com/formule-renault-2-0-en/manuel-d-utilisateur/2017. The following exceptions apply: Tire choice is unrestricted. No part of the car may be altered from original Formula Renault 2.0 components, except for necessary repairs that do not affect performance."
FE2 Driver Safety & Comfort
#37965 from Robey Clark · Rule change · TB 25-04 (2025-04 Fastrack)
neutralFE2 allows driver safety and comfort modifications for disabled drivers with SCCA approval, not transferable to other drivers.
In FE2, GCR section 9.1.1.G.2.E, add the following: "g. Driver Safety and Comfort modifications to seat and controls for drivers with disabilities may be made only by approval. These modifications must be reported to SCCA Enterprises and noted in the car logbook. The modifications are approved only for the noted driver with disabilities. If the car is used by or sold to another driver, it must be returned to the previous standard configuration."
FF Page 228, FF tire rule 9.1.1.10.e
#38251 from Anthony Stefanelli · Rule change · TB 25-05 (2025-05 Fastrack)
neutralFF adds rocker arm and outboard suspension cars optional bias ply and VFF tires; removes front-as-rear rule, adds mixing restrictions.
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
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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."
FA Ligier JS F3 Tire Choice
#38434 from Rocco Magni · Rule change · TB 25-07 (2025-07 Fastrack)
neutralFA Ligier JS F3 front tires may be Hoosier 43363 240/580R13 MS, rear 43368 300/590R13 MS.
In FA Table 2, FR Americas Ligier JS F3 spec line, change the notes as follows: "Engine must be sealed in compliance with FR Americas or prior F3 Americas requirements. Car must comply with FR Americas rules, with the following exception: front tires may be Hoosier P/N 43363, size 240/580R13 in MS compound, and rear tires may be Hoosier P/N 43368, size 300/590R13 in MS compound. Competitors must have current copies of Formula Regional Americas Championship Sporting Regulations, Onroak Automotive Ligier JS F3 Information Manual, and HPD engine-related specifications and instructions in their possession and present them upon request."
neutralGT2 Porsche 911 Coupe & Targa may use 993 3.8 RSR rear deck lid or approved aftermarket reproductions.
In GT2 Spec Lines, GT2 Cars-Porsche, 911 Coupe & Targa., add to Notes the following: "Porsche 911-based race cars (911,963,994), the use of the 993 3.8 RSR rear deck lid/spoiler is permitted. Aftermarket reproductions of the original Porsche Motorsports deck lid provided they faithfully replicate OEM dimensions and functionality, are acceptable for use."
FE2 FE & FE2 Bubble Tail
#38978 from Robey Clark · Rule change · TB 25-10 (2025-10 Fastrack)
neutralFE and FE2 Enterprises must use bubble tail P/N WM138014; FE2 allows only this configuration.
In FE, GCR section 9.1.1.G.2.F.k, change as follows: "Enterprises bubble tail P/N: WM138014 is allowed for FE and is the only configuration for FE2."
FA Re-Consider USF Pro 2000 Car for Formula Atlantic Class
neutralFA class adds USF Pro 2000 car eligibility for Formula Atlantic racing.
Effective 11/1/25 in FA Table 2, add the following:
FA Alternate Intake Manifold for MZR
#38223 from Ove Olsson · Rule change · TB 26-01 (2026-01 Fastrack)
unclearFA MZR gains alternate Noor P/N 0088-8-00 intake manifold with AT Power runners as option to Elan or Mazda Speed Elite.
In FA, GCR section 9.1.1.2.d, modify as follows: "9. Intake manifold must be unmodified Elan DP02-60-003 or Mazda Speed equivalent Elite USF2015AT, 1.882” maximum bore diameter at throttle plates. Elan or Mazda Speed equivalent Elite intake manifold may be replaced with unmodified intake Noor P/N 0088-8-00 with intake runners AT Power P/N 13624." "10. Elan DP02-60-003 or Mazda Speed equivalent Elite USF2015AT intake manifold must use an A aluminum spacer must be used between the intake manifold and cylinder head castings; minimum spacer length is 2.200”."
GT2 Additional Body Options to Replace Older Stock Car Bodies
#39086 from Samuel Daniels · Rule change · TB 26-01 (2026-01 Fastrack)
neutralGT2 adds Cadillac CTS, Chevrolet Impala/Malibu/Monte Carlo/SS, Dodge Intrepid, Ford Fusion/Taurus, Lincoln MKS, Pontiac G8/GTO/Grand Prix, Toyota Camry, and Gen late Model Stock Car bodies.
In GCR, Section 4.8.4.2.1., add the following: "Cars in the class must use 1997, through current year, commercially available stock car bodywork. The following make/model bodies are allowed: 1. Cadillac CTS 2. Chevrolet Impala 3. Chevrolet Malibu 4. Chevrolet Monte Carlo 5. Chevrolet SS
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6. Dodge Intrepid 7. Ford Fusion 8. Ford Taurus 9. Lincoln MKS 10. Pontiac G8 11. Pontiac GTO 12. Pontiac Grand Prix 13. Toyota Camry Gen late Model Stock Car Bodies are allows: 1. Chevrolet Camaro 2. Ford Mustang 3. Toyota Camry"
FF Formula F Alternative Tire Rule Proposed Clarifications
#39281 from Jay Messenger · Rule change · TB 26-01 (2026-01 Fastrack)
neutralFF clarifies alternative tire eligibility for cars homologated 1989 or earlier with rocker arm or outboard suspension on all four corners.
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."
fasterFA Formula 1000 motorcycle-based engine loses maximum compression ratio 14.5:1 limit.
In FA Table 2, Formula 1000 spec line, change the Engine as follows: "Motorcycle-based 4-cycle up to 1000cc, maximum compression ratio 14.5:1;. o Otherwise, current FA engine rules apply."
GT2 GT3 Turbo to GT2?
#39365 from Chris Edens · Rule change · TB 26-01 (2026-01 Fastrack)
neutralGT2 Mazda BP engine 1839cc classified with 46mm turbo inlet restrictor, 2250 lbs minimum weight.
In GT2 Spec Lines, Engines - MAZDA, classify Engine Family BP as follows: GT2 Engines - MAZDA Engine Family Engine Type Bore x Stroke (mm) Disp. (CC)
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Head Type Valves /
A specification table follows in the original; it is not shown here.
GT2 Tech Bulletins for GT2 and GT2-ST
#39537 from Grand Touring Committee · Rule change · TB 26-01 (2026-01 Fastrack)
slower991.2 GT3 Cup throttle body restrictor increases from 65mm to 70mm; 997.2 loses 100 lbs to 2800; Corvette LS engines get larger restrictors across multiple displacements and model years; LS3 and LT1 weight reduced 100 lbs each to 3150.
In GT2 Spec Lines, GT2 Cars – Porsche, classify 992.1 GT3 Cup as follows: GT2 Cars – Porsche Model Year Body Style Driveline Wheel Base Notes 992.1 GT3 Cup (22-25) 2 Dr RWD 4.0L flat six. 3250lbs. w/60mm Throttle Body Restrictor (TBR). Cars must be prepared in accordance with the appropriate
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model/year Porsche factory 911 GT3 Cup parts catalog/service manual. Cars may not be altered in any way except as authorized below. Drivers must have the correct year manuals as they apply to their specific car in their possession. Safety, drivers comfort, driver control and instrumentation items may be modified per the GCR. Original factory installed Matter/ IMV roll cages are allowed. The stock unmodified fuel tank is allowed. Windshield clips must be installed per GCR 9.3 Windshield Clips/Rear Window Straps. All other SCCA safety standards apply. Tires per GCR 9.3 Tires. Lubricants, consumable fluids (brake fluid, coolant etc.) and oil filters are open free. Factory (OEM manufacturer) Lexan front windows allowed as delivered. ABS is allowed. In GT2 Spec Lines, GT2 Cars – Porsche, change Notes as follows: 991.1 GT3 Cup: "3.8L flat six. 3000lbs. w/72mm Throttle Body Restrictor (TBR). Aftermarket header allowed." 991.2 GT3 Cup: "4.0L flat six. 3000lbs. w/65mm 70mm Throttle Body Restrictor (TBR)." 997.2 GT3 Cup: "3.8L flat six. 2900 2800 lbs. Aftermarket header allowed." In GT2 Spec Lines, GT2 – ST, Chevy Corvette (-2013), change as follows: 5665: Restrictor: "81 85mm flat plate" Notes: "GM LS1, LS6. LS1/LS6 C6 Corvettes using the OEM C6 intake manifold and 90 mm throttle body must use a 78mm flat plate restrictor. OEM 75mm throttle body and manifold do not require a restrictor. LS6 may reduce weight by 50 lbs. L S1/LS6 alternate intake manifold, DORMAN part # 615-900." LS2 5967 Restrictor: "83 85mm " L76 5967 Restrictor: "80 83mm flat plate" LS3 6162 Restrictor: "80 83mm flat plate" 6162 GM LS3: Weight: "3250 3150" Restrictor: "74 80mm flat plate" 6162 GM LT1: Weight: "3250 3150" Restrictor: "74 77mm flat plate" In GT2 Spec Lines, GT2 – ST, Chevy Corvette (14-19), change as follows: 5665: Restrictor: "83 85mm flat plate" Notes: "GM LS1, LS6. LS1/LS6 C6 Corvettes using the OEM C6 intake manifold and 90 mm throttle body must use a 78mm flat plate restrictor. OEM 75mm throttle body and manifold do not require a restrictor. LS6 may reduce weight by 50 lbs. L S1/LS6 alternate intake manifold, DORMAN part # 615-900." LS2 5967: Weight: "3100 3000" Restrictor: "83 85mm flat plate" L76 5967 Restrictor: "80 83mm flat plate" 6162 Restrictor: "80 83mm flat plate" 6162 LS3: Weight: "3200 3100" Restrictor: "77 80mm flat plate" 6162 LT1: Weight: "3200 3100" Restrictor: "74 80mm flat plate"
FA Change Formula 1000 allowances
#39608 from Club Racing Board · Rule change · TB 26-01 (2026-01 Fastrack)
fasterFA Formula 1000 allows carbon fiber external panels, forward-facing gaps, raises floor to 125mm, adds eight 75×125mm rub blocks, expands diffuser to 110cm with 75mm radius transitions.
In FA Table 2, Formula 1000 spec line, change the Notes as follows: "Car must comply with December 2019 GCR Formula 1000 (FB) Preparation Rules, https://www.scca.com/downloads/48184- gcr-december-2019/download, except as modified by this spec line. The prohibition of using carbon fiber in any external panels or any panels licked by the airstream in Part 3.C of the December 2019 GCR F1000 (FB) Preparation Rules is removed, with the exception that the car's floor pan/undertray must comply with the requirements of Part 2.D of the December 2019 GCR F1000 (FB) Preparation Rules. The prohibition of forward-facing gaps or openings in the bodywork in Part 3.I of the December 2019 GCR F1000 (FB) Preparation Rules is removed. Part 3.D of the December 2019 GCR F1000 (FB) Preparation Rules is modified as follows: "Between the rear of the front tire and the front of the rear tire, no point on the lower surface of the car (the surface
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licked by the air stream) shall be more than 125mm above the plane determined by the reference area designated by the entrant and on a line perpendicular to that reference plane." Part 3.D of the December 2019 GCR F1000 (FB) Preparation Rules is also modified as follows: "A maximum of eight (8) rub blocks of maximum dimension 75mm by 125mm are allowed anywhere on the lower surface of the chassis and may extend below the reference plane." Part 3.E of the December 2019 GCR F1000 (FB) Preparation Rules is modified as follows: "The radius of transitions between the diffuser sides and adjacent horizontal structures may be up to 75mm. The width of the diffuser, as measured between its sides and above any radiused transitions, may not exceed 110cm in any lateral section." The CRB may require the use of Flat Plate Intake Restrictors at any time."
GT2 Allow Larger Air Cooled Engines in Porsche 911 GT2
fasterGT2 Porsche 911 SC gains option of 4.0L 4V engine at 2350 lbs or 4.0L 2V at 2275 lbs.
In GT Spec Lines, create GT Cars - PORSCHE and classify SC as follows: GT Cars - PORSCHE Model Years Body Style Drive- line Wheel- base (in) Notes SC 1978 2 Dr. Rear engine/RWD 89.45 May use alternate engine bore. 4.0L 2V @2275 lbs. 4.0L 4V @ 2350 lbs.
GT2 Classify T1 BMW in GT2
#39408 from Jared Lendrum · Rule change · TB 26-02 (2026-02 Fastrack)
neutralM3 E92 classified in GT2 with 3999cc V8, 35mm restrictor, 3300 lbs minimum weight.
In GT Spec Lines, classify M3 E92 in GT Cars - BMW as follows: GT Cars - BMW Model Years Body Style Drive- line Wheel- base (in) Notes M3 E92 (08-13) 2 Dr. RWD 108.7 Cannot be built to any other rule set.
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In GT Spec Lines, classify M3 E92 in GT Engines - BMW - BMW as follows: GT Engines - BMW Engine Family Engine Type Bore x Stroke
A specification table follows in the original; it is not shown here.
FA Pro Mazda Classification and Performance Enhancement Proposal
#39411 from Stephen Lamana · Rule change · TB 26-02 (2026-02 Fastrack)
fasterFA Pro Mazda: lower intake manifold now unrestricted, throttle body raised to 80mm, wing height must not exceed 99cm, bodywork width must not exceed 132cm.
In FA Table 2, Pro Formula Mazda spec line, change the notes as follows: "All current FA rules apply to areas not covered by this spec line. Apex seals unrestricted. Street port or bridge port allowed. Unmodified OEM l Lower intake manifold required unrestricted, upper intake manifold unrestricted. Balance tube not permitted. Fuel injection only. Maximum 70 80mm T throttle B body. The maximum height of the wing and/or endplates shall must not exceed 99cm (38.98 inches). The overall maximum width of the bodywork behind the front wheels shall must not exceed 132cm (51.97 inches)."
What the rules allowed changed as listed; this does not say what any particular car ran.