Official SuperCar Races Rules
Color Key
Grey- Ralph's responsibilty
Black- Rules Committees Responsibilty and has not been worked on yet.
Blue- changed or agreed areas by the rules committee

This has to be rewritten
The intention of these rules is to provide an easy-to-understand guide to the SuperCar style of drag racing. Which is to look stock, sound stock and run fast, the way muscle cars should, while having fun and building camaraderie among fellow muscle car enthusiasts, and following the intent or spirit of the SuperCar rules. However, there may come a time when a participant misinterprets the SuperCar intent. In all instances, the SuperCar Rules Committee with help from the Advisory Board if needed will make the final interpretation on the rules. If you believe that you have a valid reason why your car could not follow the letter of the following rules, contact the SuperCar Rules Committe for a decision.

SuperCar racing is for 1955 to 1974 muscle cars built in United States and Canadian assembly plants. Factory lightweight cars built for sanctioned drag racing and dealership built/modified cars are not eligible to participate. Cars must have been originally equipped with a minimum of four-barrel carburetion, dual exhaust, and other factory installed equipment that promotes a high performance image.
NOTE: Throughout this rules document, all references to “correct*” acknowledge that it is “proper for the year, make, model and horsepower claimed, for both the car and engine claimed. The car year, make, model, body style and engine combination must all have been produced and available to the general public in the year claimed, in an actual car.”

Most parts of the car will fall into one of four categories:

1) Correct* OEM parts. These parts must be proper for the year, make, model, and horsepower claimed, and they must be Original Equipment Manufactured (OEM) parts. Examples: Intake manifold and cylinder heads.

2) Correct* parts. These parts are the same as Correct* OEM parts, except they do not need to be OEM manufactured. Reproduction parts, that duplicate the Correct* Original parts in appearance, form, function and material and are primarily designed as “restoration” parts are allowed, as long as they comply with all other applicable rules. Examples: wheels, upholstery, emblems, replacement sheet metal, etc.

3) Spec parts. Parts that meet a specification defined in the rules, but are not necessarily Correct* or stock appearing. Examples: tires, exhaust system. Note: Every effort should be made to achieve a stock “look” with these parts. For example; your car did not come from the factory with a 2-1/2” mandrel bent exhaust system. But it is specified in the rules that you may run one. Do not have it powder coated pink or highly polished stainless. Rather, try to keep the finish somewhat consistent with what the original correct* exhaust system would have been.

4) Correct Appearing. Everything not specified otherwise must be correct appearing. “Correct appearing” and “appearing correct” means: upon a cursory visual inspection by someone reasonably familiar with the year, make and model claimed, it looks like a correct* part.
 
 

2.00 ENGINE
2.01 Engine block must appear to be a correct* original block and it must be an original vintage OEM or vintage OEM replacement of the same engine family and exterior size and must be made from the same material as the correct* original block. Also, a new OEM replacement block is allowed only if it duplicates a legal vintage block in design, material, appearance, bore size and performance. No aftermarket blocks are allowed. Replacement OEM blocks that have raised decks, raised cam or bigger bores are not allowed. Block casting number does not have to be correct*. No aftermarket blocks allowed.
For example:
a. A correct* 400 cid block could be replaced with a vintage, OEM 455 block, if it appears externally correct*, and is made from the correct* material.
b. A correct* Mopar 340 could use a 318, 340 or a 360 block, if it appears externally correct*, and is made from the correct* material.
c. A correct* 327 Chevy can use a 350 or 400 block, if it appears externally correct*, and is made from the correct* material.
d. A new Mopar Hemi standard replacement block is allowed, but a Siamese bore Mega block is not.
2.02 Dealer installed engines and dealer performed modifications are not allowed.
2.03 Cylinder Heads and Intake Manifold MUST be correct* OEM casting, have correct* original casting numbers and be of correct* original material.
Note: Any cylinder head or intake manifold that is not the correct* casting number, must be approved.
Casting date codes are not looked at and are not part of the tech process.
2.04 Internal engine modifications allowed.
2.05 The entire engine compartment and engine assembly, including accessories, must appear correct, except for items specifically defined otherwise in these rules. Appearance of the engine will be inspected with the air filter housing off and on. Removal of pollution control air pump is allowed. Engine torque strap allowed.
Engine color should appear stock.
2.06 No Nitrous Oxide allowed.
2.07 Lightweight mini starters allowed. If painted to appear as stock as possible.
2.08 Aftermarket harmonic balancers are allowed, if painted to appear as stock as possible.

3.00 FUEL SYSTEM AND CARBURETOR
3.01 The carburetor must appear externally correct*. The stamped part number need not be correct*. Internal modifications are allowed and larger CFM carburators are allowed as long as they maintain the stock appearance of the factory correct carburator. For example an 800 Quadrajet can replace an 750 Quadrajet as long as it appears extrenally correct*, however a vacuum secondary holley cannot be replaced with a mechanical secondary Holley.
3.02 Carb choke flap and assembly is optional.
3.03 Choke horn removal is not allowed.
3.04 Carb spacers are not allowed
3.05 Maximum of 2 OEM type gaskets allowed under carb.
3.06 The air filter housing assembly must appear correct.
All qualifying and race runs must be done with the correct appearing air filter housing and an air filter in place. Correctly sized aftermarket air filters are allowed.
3.07 Stock Appearing mechanical fuel pump must be retained.
3.08 Electric fuel pumps are allowed if mounted in a location out of view.
Fuel regulators and fuel pressure gauges are allowed, if mounted in a location out of view.
3.09 Correct* fuel lines are required from engine mounted mechanical fuel pump to carburetor.
3.10 Fuel lines from tank to mechanical pump may be upgraded.
3.11 Gasoline as outlined here is the only acceptable fuel for use in SuperCar ShootOuts.
The SuperCar tech inspector reserves the right to check gasoline at any time during competition. Gasoline is defined as a mixture of hydrocarbons only. The average dielectric constant (D.C.) for the hydrocarbons that compromises gasoline is 2.025. This is defined as a reading of "0" on the fuel-check meter.
3.12 Nitrous Oxide is NOT allowed. ANYONE USING NITROUS OXIDE WILL BE BANNED FROM PARTICIPATING FOR LIFE!
3.13 Propylene Oxide, Nitro-methane, alcohol and nitro-propane are NOT allowed.

4.00 EXHAUST
4.01 Cast iron exhaust manifolds are mandatory and must be correct*, have correct* casting numbers and be of correct* material. Under no circumstances will headers be allowed, including those cars that had headers delivered in the trunk.
Internal modifications are allowed. Correct* appearing exhaust manifold paint or coatings are allowed. Casting date codes are not looked at and are not part of the tech process. Headers are allowed for a first time racer. One time only. Once the racer decides to be part of the series a game plan must be set by the Racer to be incompliance to respected set rules.
4.02 Even if equipped from the factory with cut-outs, all runs must be made with closed exhaust running through the mufflers.
4.03 Exhaust systems may be upgraded to a maximum of 2.5" diameter head and tail pipes.
Exception: Certain Max Wedge cars left the factory with 3" inch head pipes, these cars can retain these head pipes up to, but not past, the transmission tail-shaft. Even if equipped from the factory with cut-outs, all runs must be made with closed exhaust running through the mufflers.
4.04 Mufflers must be stock looking in design.
No welded mufflers allowed. Maximum muffler inlet and outlet is 2.5”.
4.05 Exhaust pipes must exit in the correct* original location.
4.06 Excessive exhaust leaks are not allowed.
4.07 "X" and "H" pipes are allowed. The “X” pipe assembly can not exceed 24” in length.

5.00 VALVE COVERS
5.01 Valve covers must appear correct.
5.02 Valve cover spacers are not allowed.
5.03 Maximum of 2 OEM type gaskets under each valve cover allowed.

6.00 CAMSHAFT
6.01 Camshaft must produce a correct* stock sound at idle. We all know what a STOCK cam sounds like! Factory cam specs will be taken into consideration when determining the correct* idle sound.
Example: An Olds W30 or a Mopar Max Wedge car had large cams from the factory. They will not be expected to idle as smoothly as a 1973 400. Camshaft lopiness and smoothness will be teched with the engine operating at idle RPM and from the exhaust outlets. Upgrade to solid flat tappet or roller cam allowed. Mechanical sounds from the valve train are not a tech item.

7.00 PULLEYS
7.01 All pulleys must be correct appearing.
7.02 Belts running the water pump and alternator must be retained at all times.

8.00 IGNITION SYSTEM
8.01 The distributor, distributor cap and coil must appear correct,
Distributor housing does not need to have original part number stamped in body.
8.02 Coil must be retained in the correct* location.
8.03 Aftermarket ignition boxes allowed, if mounted out of sight.
8.04 Spark plug wires and boots must be black, (or of the correct* original color if the correct* original color is not black) 8mm maximum diameter, and have NO aftermarket lettering on them.
Aftermarket spark plug wires are OK if they conform to the above rules.
8.05 Traction control is not legal. Traction control is defined as any device that measures wheel or driveshaft slip (speed) and controls the slip via electronic or mechanical means. Electronic or digital ignitions are legal.

9.00 COOLING SYSTEM
9.01 The radiator, fan and radiator shroud must appear correct.
Replacement radiator caps are OK. No electric fans.
9.02 Overflow cans of at least 20 oz. are required.
Aftermarket overflow cans OK, if car originally did not have one but all attempts should be made to conceal it.

10.00 ELECTRICAL SYSTEM
10.01 The battery must be retained in the correct* location, be functional and securely fastened down with original style hold down.
Original looking batteries are encouraged but not required, Replacement batteries are allowed.
10.02 The charging system must be fully operational at all times.
10.03 Under hood wiring should appear correct.

11.00 DRIVETRAIN
11.01 Cars that were only available with a manual transmission may not convert to an automatic. And vice/versa.
For example: 1969 Camaro Z-28 only came from the factory with a manual transmission, so an automatic would not be legal.
11.02 The transmission must be of the same manufacturer as the car.
For example: an Olds with a TH400 could change to a TH350 or Powerglide, and a Chevy with a Saginaw could change to a Muncie or other GM 4 speed trans. Transmission casting numbers are not a tech issue. Internal modifications are OK.
11.03 OEM appearing aftermarket cases are allowed.
11.10 Automatic Transmission:
11.11 Any torque converter is allowed.
11.12 Aftermarket shifters are not allowed.
11.13 Maximum 3 forward gears.
11.20 Manual Transmission:
11.21 Any clutch/pressure plate assembly is allowed. Scatter shields are allowed.
11.22 3 speeds may be upgraded to a 4 speed.
11.23 Shifter must be stock appearing.
11.24 Maximum 4 forward gears.
11.30 Drive Shaft:
11.31 Aftermarket drive shaft is allowed. Maximum 3.5” diameter.
Aftermarket drive shafts should be painted, to appear as stock as possible.

12.00 REAR AXLES
12.01 The rear axle housing must be of the same manufacturer as the car. OEM appearing aftermarket housings are allowed.
Internal modifications are allowed. Any gear ratio allowed. Aftermarket axles are allowed.
Upgrade to posi-unit or spool is allowed.

13.00 SUSPENSION
13.10 Rear Suspension:
13.11 Traction devices are limited to hop stop bars for upper control arms on coil spring cars.
13.12 Upper and lower control arms on coil spring cars must be correct*.
13.13 Pinion snubbers and clamping of leaf springs are allowed on leaf spring cars.
13.14 No slapper bars or ladder bars of any kind are allowed, unless originally equipped from the factory. Factory documentation will be required to prove authenticity for any cars with bolt on traction devices.
No dealer installed traction devices allowed.
13.15 Aftermarket bushings allowed.
Must be the correct* original color.
13.16 Shocks and springs must appear correct.
Aftermarket adjustable shocks are allowed if painted to appear correct. Composite or other lightweight material leaf springs are not allowed.
13.17 Air bags are not allowed.
13.20 Front Suspension:
13.21 The front sway bar is optional.
13.22 Aftermarket shocks, bushings and springs are allowed, but must be painted to appear correct. No other aftermarket front suspension parts are allowed.

14.00 TIRES AND WHEELS AND BRAKES
14.01 Wheels must be correct*, including correct* diameter, width and material.
Note: Width may be upgraded to a maximum of 6”, if the correct* wheel is narrower than that. Reproduction wheels allowed.
14.02 All 4 wheels and tires must be same size.
Exception: Mopar TA Challenger came from factory with G-60’s on rear and E-60’s on front.
14.03 Original equipment reproduction bias-ply tires only. No soft compound tires of any kind are allowed. Retread tires are not allowed. Any car is allowed to upgrade to a maximum size tire of G-70 of the correct* wheel diameter. All cars that were originally available with a 60 series tire can upgrade to a maximum size of G-60 tire of the correct* wheel diameter.
Exception: First time Supercar participants are allowed to run normal ’non-sticky’ street radials for their first Supercar race.
14.04 Aftermarket or OEM brake upgrades are allowed for safety concerns. Every effort should be made to achieve a stock appearance.
14.05 Line locks are allowed if hidden.

15.00 TRACK TECH
15.01 All track safety rules apply and you must pass track tech.
When required by track safety rules, roll bars and aftermarket seat belts will not be cause for disqualification under the 'stock appearing' requirement in the SuperCar rules. We require that everyone racing in the SuperCar class maintain a stock image and appearance as best they can. Every effort should be made to integrate required safety equipment with a correct appearance. Careful shaping and placement of the roll bar tubes to hide them as best as possible and painting of the roll bar is one way to try and blend in the roll bar with the interior.

16.00 UNDER BODY
16.01 Underside of vehicle needs to appear correct when viewed from ground level, 3 feet outside perimeter of the car.
Exceptions to this are any components specifically identified and mentioned in the rules.

17.00 Elapsed Times Compliance
17.01 SuperCar Participants running 13.99 and slower may run a non sticky radial tire
17.02 SuperCar Participants running 13.99 to 12.00 are allowed to race at multiple events as long as Rules are being addapted to make ther Car 100% compliant to the set rules. Casting numbers may be incorrect but the Factory appearance must be present.
17.02 SuperCar Participants running 11.99 and quicker must comply to set rules. All Casting numbers must be correct and the factory look must be maintaned ar all times. Once a SuperCar Participant Runs 11.70 A Valve Cover will be pulled to verify casting numbers