This track has been raced on 4 configurations (The Circuit, 2.57 mi; 19, 2.92 mi; 1.83 mi; 3.02 mi). Laps on different configurations are not comparable, so only events on the 2.57 mile layout are shown; switch above to see the others.
5 laps are left out as timing errors (far too short to be a lap of this track). The rest of those sessions, sectors included, is used.
One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it.
Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.
Sectors
S1 SF → IM1 0.65 mi
S2 IM1 → IM2 0.75 mi
S3 IM2 → SF 1.17 mi
Spd In → Out 0.03 mi
Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.
By car
Car
Class
Drivers
Lap
Qual
Race
Trap
S1
S2
S3
Stohr WF1
P2
2
1:09.928Tim Day Jr
1:09.928Tim Day Jr
1:39.758Tim Day Jr
155.4Tim Day Jr
26.848Tim Day Jr
28.010Tim Day Jr
42.420Tim Day Jr
Stohr WF1
P2
1
1:09.928Tim Day Jr
1:09.928Tim Day Jr
1:39.758Tim Day Jr
155.4Tim Day Jr
26.848Tim Day Jr
28.010Tim Day Jr
42.420Tim Day Jr
Stohr WF1 (2004)
P2
1
1:12.573Kevin Mitz
1:12.573Kevin Mitz
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/T1
2
1:45.818Brad McAllister
1:45.818Brad McAllister
1:46.926Brad McAllister
115.9Brad McAllister
28.729Brad McAllister
30.833Brad McAllister
45.847Brad McAllister
BMW M3
T1
1
1:46.465Ian Barberi
1:46.465Ian Barberi
1:47.434Ian Barberi
114.9Ian Barberi
28.992Ian Barberi
30.811Ian Barberi
46.263Ian Barberi
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
BMW M4 GT4
T1
1
1:47.084Drew Delmonico
1:47.084Drew Delmonico
1:47.467Drew Delmonico
161.4Drew Delmonico
29.150Drew Delmonico
30.850Drew Delmonico
46.316Drew Delmonico
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
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
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
Pontiac GTO
T1
1
1:59.123Ed Gless
1:59.760Ed Gless
1:59.123Ed Gless
120.7Ed Gless
32.383Ed Gless
34.587Ed Gless
51.370Ed Gless
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
wordingT1 cars with aftermarket sequential transmissions get 10-inch max bellhousing; non-sequential cars gain 100 lbs weight break.
As printed in Fastrack
In GCR, Section 9.1.9.1.I.4., change as follows: "Aftermarket sequential transmissions are permitted. Cars with aftermarket sequential shift transmissions shall utilize a 1:1 (or greater/overdriven) ratio in top gear. Transmission location must be OEM. Maximum bellhousing length is 10 inches. Cars that don’t use an aftermarket sequential transmission may decrease their competition weight by 100 lbs."
slowerP2 motorcycle engines: 2011+ Kawasaki restrictor reduced to 34mm, minimum weight raised to 1100 lbs; 2009+ other brands weight raised to 1100 lbs.
As printed in Fastrack
In P2, GCR section 9.1.8.C.D.2, change as follows: "Height: No part of the vehicle having special or significant aerodynamic function shall exceed a height of 115cm (45.275 inches) above the ground with the car in normal racing trim, driver aboard." In P2, GCR section 9.1.8.C.D.3, change as follows: "However, no portion shall extend more than 10cm (3.937 inches) beyond a plane tangent to the outer face of the front and rear wheels with tires." P2 Engine Table Spec
Show 1 more lines
Line Engine Series
A specification table follows in the original; it is not shown here.
cars added2009-2012 Porsche Cayman S classified in GT2, 3.4L, RWD, no PDK transmission allowed.
As printed in Fastrack
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
cars addedFields Cardinal V8 classified in GT1 with Ford V8 engine, 4.9L displacement, 2100 lbs minimum weight.
As printed in Fastrack
In GT Spec Lines, GT1 Cars - Fields Cardinal, classify Fields Cardinal V8 as follows: GT1 Cars – Fields Cardinal Model Years Body Style Drive- line Wheel- base (in) Notes Fields Cardinal V8 2023 2 Dr. RWD 92.0 Roll Cage MUST be modified to comply with
Show 6 more lines
GCR Section 9.4. In GT Spec Lines, GT1Engines - classify Ford V8 as follows: GT1 Engines - Ford Engine Family Engine Type Bore x
A specification table follows in the original; it is not shown here.
wordingT1 GT4 weights clarified for nine cars, ranging from 3200 lbs Porsche 718 Cayman to 3575 lbs Aston Martin.
As printed in Fastrack
RM 23-04 – Touring 1 weights dated 3/21/2023 As an E&O to the February Fastrack, in T1-GT4 leave weights as follows: Aston Martin Vantage AMR GT4: 3575 Audi R8 GT4: 3550 BMW M4 GT4: 3500 Ford Mustang GT4: 3550 Maclaren 570S GT4: 3450 Mercedes AMG GT4: 3450
Show 3 more lines
Porsche 718 Cayman GT4 CS MR: 3200 Porsche 718 GT4 RS Clubsport: 3450 Toyota Supra GR GT4: 3350
wordingP2 side body height requirement clarified: outermost surface between wheel openings must equal front axle centerline height.
As printed in Fastrack
In P2, GCR section 9.1.8.C.D.6, change as follows: "As viewed from the side, T the outermost surface of side pods body between the front and rear wheel openings and above the floor must have a minimum height equal to the height of the front axle centerline."
P2 Clarify closed cockpit single seat car allowance
wordingP2 closed cockpit single seat cars now prohibited unless specifically allowed in Table 1.
As printed in Fastrack
In P2, GCR section 9.1.8.C.C, add a section as follows: "4. Closed cockpit single seat cars are not permitted unless specifically allowed by a spec line in Table 1."
slowerT1 Chevrolet Camaro Gen 5, Corvette C5 and C6: engine resleeve restricted to stock parameters only, no longer LS3 bore/stroke.
As printed in Fastrack
In T1 NEW Spec Lines, Chevrolet Camaro Gen 5 (10-15) Including SS, Z28, change Engine Notes as follows: 1130: "May resleeve any LS block to LS3 bore/ stroke for Engine replacement. May resleeve to stock parameters for engine repair or replacement." 1135: "May resleeve any LS block to LS3 bore/ stroke for Engine replacement.May resleeve to stock parameters for engine repair or replacement." In T1 NEW Spec Lines, Chevrolet Corvette C5 (‘97-’04) – Includes: Z06, Coupe, Convertible, change Engine Notes as follows: 1132: "May resleeve any LS block to LS3 bore/ stroke for Engine replacement. May resleeve to stock parameters for engine repair or replacement."
Show 18 more lines
1134: "May resleeve any LS block to LS3 bore/ stroke for Engine replacement. May resleeve to stock parameters for engine repair or replacement." 1136: "May resleeve any LS block to LS3 bore/ stroke for Engine replacement. May resleeve to stock parameters for engine repair or replacement." 1138: "May resleeve any LS block to LS3 bore/ stroke for Engine replacement. May resleeve to stock parameters for engine repair or replacement." In T1 NEW Spec Lines, Chevrolet Corvette C6 (05-13) - Includes Z51, GrandSport, Z06, Z06 Carbon, change Engine Notes as follows: 1150: "May resleeve any LS block to LS3 bore/ stroke for Engine replacement. May resleeve to stock parameters for engine repair or replacement." 1160: "May resleeve any LS block to LS3 bore/ stroke for Engine replacement. May resleeve to stock parameters for engine repair or replacement." 1170: "May resleeve any LS block to LS3 bore/ stroke for Engine replacement. May resleeve to stock parameters for engine repair or replacement." 1180: "May resleeve any LS block to LS3 bore/ stroke for Engine replacement. May resleeve to stock parameters for engine repair or replacement." 1190: "May resleeve any LS block to LS3 bore/ stroke for Engine replacement. May resleeve to stock parameters for engine repair or replacement."
wordingGT2 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.
As printed in Fastrack
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."
fasterT1 Corvette C5 gains approved aero parts: carbon rear spoiler, vented front splitter, side skirts, with 50 lb weight reduction allowed.
As printed in Fastrack
In T1 NEW Spec Lines, Chevrolet Corvette C5 (‘97-’04) – Includes: Z06, Coupe, Convertible, Spec Lines 1132-1138, add to Notes as follows: "Any option of OEM Bodywork parts may be used as basis for aero measurements. Rear spoiler max 5” Above bumper allowed. +50lbs. The following parts are permitted, with a 50lb decrease from base weight, in lieu of the aero options permitted in 9.1.9.1.B: (C7Carbon Rear- Spoiler CCC5 EX- RSB-GB, Vented Front Splitter CCC5-FS-GB, Side Skirts CCC5 SS-GB.)"
wordingT1 Dodge Viper ACR / SRT RT-10 and ACR/ACR-X spec lines 1350 and 1370 remove 12/23 expiration.
As printed in Fastrack
In T1 NEW Spec Lines, Dodge Viper ACR / SRT RT-10, change Spec Line Number as follows: "1350 *Spec line Expires 12/23*" In T1 NEW Spec Lines, Dodge Viper ACR/ACR-X, change Spec Line Number as follows: "1370 *Spec line Expires 12/23*"
fasterGT2 Mazda 20B 3 rotor loses 220 lbs, to 2280, consolidating two spec lines.
As printed in Fastrack
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."
fasterGT2-ST Dodge Viper including Comp Coupe, ACR/ACR-X with VRL front fascia loses 100 lbs.
As printed in Fastrack
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.
T1 New T1 add spec line for C5 corvette LS2 engines (Copy from C6)
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
cars addedT1 Porsche 997-1 GT3 Cup added at spec line 4210, minimum weight 3050 lbs.
As printed in Fastrack
In T1 Spec Lines, delete the Porsche 996 GT3 Cup car from the standard spec lines and classify "Homologated car" section as follows: T1 – Homologated Cars
A specification table follows in the original; it is not shown here.
unclearT1-GT4 batch adjustments: five cars lighter, two heavier, restrictors and ECU maps changed, five models now eligible for Runoffs.
As printed in Fastrack
In GCR, Section 9.1.9.1.A.T., change as follows: "Tires- Tires must conform to GCR section 9.3.TIRES and als o must conform to spec line requirements. DOT approved tires are permitted. Slicks conforming to the spec line are permitted." In Touring 1 - Homologated Cars Spec Lines, 4100- BMW M2 ClubSport Racing, change Must Conform To as follows: "Tires conforming to SRO TCX rules allowed. Must meet factory specs." In Touring 1 - Homologated Cars Spec Lines, 4120- Ford Mustang FP350S 2017, change as follows: Must Conform To: "Tires conforming to Trans Am SGT tire rules allowed Must meet factory specs." Chassis Notes: "VIN not required. Additional permitted allowances: DOT tires required. Other consumables are open, alternate
Show 40 more lines
driveshaft permitted, aftermarket wheels and fuel cell per Touring category rules permitted. Shocks conforming to T1 rules permitted. Alternative rear toe links permitted." In T1-GT4 Spec Lines, change Chassis Notes as follows: Aston Martin Vantage AMR GT4: "**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)** Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted." Audi R8 GT4: "**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)**Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted." BMW M4 GT4: "**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)**Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted." Chevrolet Camaro GT4-R: "**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)**Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted." Ford Mustang GT4: "**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)**Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted." Maclaren 570S GT4: "Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted." Mercedes AMG GT4: "Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted." Porsche 718 Cayman GT4 CS MR: "Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted." Porsche 718 GT4 RS Club-sport: "Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted." Toyota Supra GR GT4: "**NOT YET ELLIGIBLE FOR RUNOFFS COMPETITION (Q.2)**Slick tires conforming to IMSA GT4 or SRO GT4 specs are permitted." In T1-GT4 Spec Lines, change as follows: Aston Martin Vantage AMR GT4: Weight: “3575 3490” Performance Control: “SRO power level ECU Map 3 IMSA Map id 11” Chevrolet Camaro GT4-R: Weight: “3375 3435” Performance Control: “63 62mm” Ford Mustang GT4: Weight: “3550 3535” Performance Control: “63 71mm SRO compliant restrictor IMSA ECU Cal” Maclaren 570S GT4: Weight: “3450 3250” Performance Control: “SRO 2019 BOP ECU map SRO Rest 1” Mercedes AMG GT4: Weight: “3450 3470” Performance Control: “Power level 2 map 5” Porsche 718 Cayman GT4 CS MR: Weight: “3200 3250” Performance Control: “54 53.7mm” Toyota Supra GR GT4: Weight: “3350 3315”
slowerGT2-ST Dodge Viper hybrid kit restrictor reduced from 50mm to 45mm flat plates.
As printed in Fastrack
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 -
Show 1 more lines
100lbs 8400 OEM 3225 Stock OEM engine. Engine long block."
P2 E&O - Clarify B.1 modified engine range in AMAC spec lines
unclearP2 Suzuki GSX-R1000 07/08 engine crankcase may swap to GSX-S1000 16/19 part #11301-04840.
As printed in Fastrack
In P2 Engine Table, Spec Line B.1, add to notes as follows: "No modifications allowed on engines manufactured after 2008 model year. 2007-2008 Suzuki GSX-R1000 crankcase part #11300-21860 may be replaced with 2016-2019 Suzuki GSX-S1000 crankcase part #11301-04840."
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.”
removedT1 NEW class removes 23 spec lines including Acura NSX, Ferrari, Porsche 996, Nissan Z cars, and others; Porsche 997 spec line 1680 expiration removed.
As printed in Fastrack
In GCR Contents, change as follows: "9.1.9.1 TOURING (T1) CATEGORY NEW T1 NEW" In GCR, Section 9.1.9.1.Touring (T1) NEW Category Specifications, change as follows: "9.1.9.1.Touring (T1) NEW Category Specifications" In T1 NEW Spec Lines, change as follows: "9.1.9.1.A T1 NEW Spec Lines" "T1 NEW"
Show 26 more lines
In T1 NEW Spec Lines, delete the following Spec Lines in their entirety: "Acura NSX (Spec Line 1000) Acura NSX Turbo (Spec Line 1010) Acura NSX Turbo World Challenge (Spec Line 1020) Audi TTRS (GTS 2011 Spec) (Spec Line 1040) Dodge Viper ACR/ACR-X (Spec Line 1360) Ferrari 360 (Spec Line 1400) Ferrari 430 (Spec Line 1410) Ferrari 430 Challenge (Spec Line 1420) Mazda MX-5 (06-15) (Spec Line 1520 and 1530) Mazda RX-7 (Spec Line 1540) Nissan GTR (Spec Line 1550) Nissan 350/370Z (Spec Line 1560) Nissan 370Z Supercharged (Spec Line 1570) Nissan 350Z (Spec Line 1580) Nissan 350Z/370Z (Spec Line 1590) Porsche Cayman/S/GTS (05-15) (Spec Line 1600, 1610 and 1620) Porsche Cayman GTS (2011) (Spec Line 1630) Porsche 928 S4 Porsche 928 GTS-R (Spec Line 1640) Porsche 996 (Spec Line 1650) Porsche 996 TT OEM (Spec Line 1660) Subaru WRX, WRX STI (05-2020) (Spec Line 1700) Toyota Celica All-Trac (Spec Line 1710) Toyota Supra MK4 (Spec Line 1720)" In T1 NEW Spec Lines, Porsche 997, change Spec Line Number as follows: "1680 *Spec line Expires 12/23*"
GT2 REDUCE C6 CORVETTE WEIGHT WITH OEM 7 LITER ENGINE REDUCE BY 150LB
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.”
GT2 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
cars added2015 Mitjet ST added to GT2, must run per VTS specifications with complete FIA form CdM008.
As printed in Fastrack
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
Show 2 more lines
complete car Specifications (FIA form CdM008) at every entered race event.
T1 9.1.9.1 T1 new category item/ line 26 rule to expire Jan 1 2023
In P2 Engine Table, Spec Line E, change the notes as follows: "No engine modifications except for dry sump oil system, ECU mapping, and exhaust system the following: oil system, ECU, and exhaust are unrestricted."
GT2 Request to Eliminate the FPR from the Corvette (-2013) with LS2
wordingP2 FIA Group CN spec notes clarified: Series changed to Challenge, documentation requirement moved to online link.
As printed in Fastrack
In P2 Table 1, FIA Group CN spec line, change the notes as follows: "FIA Group CN homologated chassis, brake calipers and discs, hub carriers, and suspension components are required. V de V European Proto Endurance Series Challenge permitted bodywork, rear diffuser, wing, wheels, and assisted shifting are allowed. Car M must comply with all other P2 requirements. Competitors must have copies of FIA Group CN Technical Regulations and V de V European Proto Endurance Series Challenge Sporting and Technical Regulations in their possession and present them upon request are available here: https://www.scca.com/pages/technical-forms-and-downloads."
wordingGT2-ST allows aftermarket replacement differential housings if exact equivalents.
As printed in Fastrack
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."
cars addedGT4 cars now permitted in GT2-ST with factory restrictor, must comply with 2012 STO rules, slicks allowed with 100-pound penalty.
As printed in Fastrack
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."
cars addedBMW M4 GT4 (G82) added to T1 GT4 at 3525 lbs minimum weight with Red power stick control.
As printed in Fastrack
In T1 GT4 Spec Lines, SL#4030, change as follows: Model: "BMW M4 GT4 (F82)" Performance Control: "Gold power stick Red power stick" In T1 GT4 Spec Lines, classify BMW M4 GT4 (G82) as follows:
A specification table follows in the original; it is not shown here.
fasterT1 GT4 Spec Line 4020 restrictor opens from 44mm to 45mm, minimum weight drops to 3400 lbs.
As printed in Fastrack
In T1 GT4 Spec Lines, Spec Line 4020, change as follows: Performance Control: Power level 2020, 44mm 45mm SRO compliant restrictor" Min. Weight with driver (LBS): "3550 3400"
wordingT1 Corvette may roll or flatten wheel opening lips for tire clearance; plastic fenders may remove lips if edge thickness matches basic material.
As printed in Fastrack
In GCR, Section 9.1.9.1.A.2,, add the following: "It is permitted to roll under or flatten any interior lip on the wheel opening for tire clearance. Cars with plastic/composite fenders may remove any interior wheel opening lip, but the resulting material edge shall be no thinner than the basic fender material thickness. Non-metallic inner fender liners may be removed. Vents may be added to fenders."
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.
Show 2 more lines
(CC) Head Type Valves /
A specification table follows in the original; it is not shown here.
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.
fasterGT2 STO aftermarket ABS weight penalty reduced from 100 lbs to 50 lbs.
As printed in Fastrack
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."
unclearT1 E46 M3 Spec Line 1050 allows VAC Motorsports throttle body VAC-TB-S54 on 3.250L engine instead of Dinan.
As printed in Fastrack
In T1 Spec Lines, E46 M3 Spec Line # 1050, change Engine Notes as follows: "Dinan Throttle Body #D760-3400 VAC Motorsports #VAC-TB-S54 allowed on the 3.250L."
unclearGT2 Pontiac Fiero changes from FWD to RWD; hood bulge permitted for front engine relocation.
As printed in Fastrack
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."
slowerTA2 and STO OEM wings no longer exempt from rear wing height rule at roof peak.
As printed in Fastrack
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."
unclearT1 Mustang Spec 1430 restrictor opens 60mm to 65mm; Spec 1460 weight rises to 3500 lbs, restrictor 70mm; Corvette 1190 restrictor opens 67mm to 70mm; BMW 1090 restrictor narrows 40mm to 35mm; BMW 1100 weight rises to 3350 lbs.
As printed in Fastrack
In T1 Spec Lines, change Weight, Restrictor Required and/or Notes as follows: Mustang - Spec Line 1430: Restrictor Required: "60mm 65mm - FPR" Mustang - Spec Line 1460: Weight: "3425 3500" Restrictor Required: "70mm - FPR" Corvette Spec Line 1190: Restrictor Required: "67mm 70mm - Flat Plate"
Show 5 more lines
BMW - Spec Line 1090: Required Restrictor: "(2) X 40mm 35mm diameter hole inlet restrictor plate required" Chassis Notes: "This spec line is set to expire 12/31/25." BMW - Spec Line 1100: Minimum Weight: "3150 3350”
fasterT1 Honda S2000 minimum weight reduced from 2950 lbs to 2900 lbs.
As printed in Fastrack
In T1 Spec Lines, Honda S2000, Spec Line 1530, change as follows: Minimum Weight: "2950 2900" Chassis Notes: "This spec line is set to expire as of 12/31/2025 if not represented in Majors competition in 2025."
wordingT1 BMW E46 M3 permits BMW #GS7D36SG aftermarket sequential transmission in SL# 1060 and 1070.
As printed in Fastrack
In T1 Spec Lines, BMW E46 M3, add to Chassis Notes the following: SL# 1060: "BMW #GS7D36SG transmission permitted as an aftermarket sequential option." SL# 1070: "BMW #GS7D36SG transmission permitted as an aftermarket sequential option."
fasterT1 Mustang Darkhorse R gets 315 front and rear tyres, loses 500 lbs minimum weight to 3600.
As printed in Fastrack
In T1 Spec Lines, Mustang Darkhorse R (Mustang Challenge) Spec Line- 4119, change as follows: Tire size: "305 315 (f) 315(r)" Performance Control: "TBD" Min. Weight with driver (LBS): "10.5 (f) 11 (r) 3600" Chassis Notes: "Must conform to Mustang Challenge Rules. Tires conforming to Mustang Challenge rules are permitted. **This car is not eligible for the Runoffs until it has competed in 3 Super Tour events.**"
wordingGT2 Porsche 911 Coupe & Targa may use 993 3.8 RSR rear deck lid or approved aftermarket reproductions.
As printed in Fastrack
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."
cars addedGT2 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.
As printed in Fastrack
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
Show 12 more lines
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"
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.
As printed in Fastrack
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
Show 49 more lines
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"
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.
As printed in Fastrack
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.
cars addedM3 E92 classified in GT2 with 3999cc V8, 35mm restrictor, 3300 lbs minimum weight.
As printed in Fastrack
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.
Show 5 more lines
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.
T1 LS1 into Corvette C6 Spec Line Request
#39716 from Danny Kellermeyerhttps://crbscca.com/secu · Rule change · TB 26-02 (2026-02 Fastrack)
In T1 Spec Lines, reinstate Spec Line # 1139, Chevrolet Corvette C6 (05-13) Includes Z51, GrandSport, Z06, Z06 Carbon, as follows: Max Displ: "LS1, LS6 OEM" Min Weight: "3200" Required Restrictor: "70mm"
What the rules allowed changed as listed; this does not say what any particular car ran.