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I. Disclaimer
The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern the condition of all events, and by participating in these events, all participants are deemed to have complied with these rules. No expressed or implied warranty of safety shall result from publications of or compliance with these rules and/or regulations. They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to a participant, spectator, or official. The race director shall be empowered to permit reasonable and appropriate deviation from any of the specifications herein or impose any further restrictions that in his opinion do not alter the minimum acceptable requirements. No expressed or implied warranty of safety shall result from such alteration of specifications. Any interpretation or deviation of these rules is left to the discretion of the Officials. Their decision is final. It is the responsibility of the teams and competitors to present a legal race vehicle for competition. Any vehicle that with illegal modifications that pass through technical inspection undetected will be disqualified immediately upon detection of the infraction.
Sincerely,
The Management
South Georgia Motorsports Park
II. Basic Guidelines
A. S.G.M.P. reserves the right to update, modify, and/or delete rules at any time deemed necessary to insure safety, fair competition or any other reason that may be appropriate.
B. Any competitor that finishes in the top five (5) may be required, at their expense, to remove the intake, heads, and/or oil pan for inspection purposes.
III. Rules and Specifications
A. Weight
1. All specified weight requirements will be with gas, oil, water and driver after Qualifying.
2. Minimum total weight will be no less than 2800 lbs before the race.
3. GM crate # 88958602 minimum total weight 2700 lbs.
4. Maximum left side weight will be 58% before and after the event without refueling.
B. Engine Options (crates)
1. GM Crate motor part # 88958602, or # 88958604. All part and casting numbers must be visible for inspection. Engine seal bolts (5) must be in place or it will be considered a built engine, upgrade to GM roller rocker kit # 199210728 permitted on the 602.
2. Crate Rebuilds: The GM crate motor program has in place in its manual specs for rebuilding (freshening). A rebuilt crate must meet these specs and may only be done by a GM certified & bonded shop, engine will need to be resealed and tagged by that particular shop. Any crate not meeting this criteria will be considered a built motor.
C. Claim Rule for Crate Motor
1. Only the top five drivers finishing a race or their owner may claim a crate motor.
2. The driver having their motor claimed must finish the race ahead of the driver claiming the engine.
3. The claim will be limited to only one car having their engine claimed.
4. The claim must be made within ten (10) minutes of the completion of the race.
5. The claim will be made with cash only.
6. The cost to claim a crate motor will be the current cost to replace the motor plus 100.00 pulling fee.
7. The fee must be paid to the director of competition.
8. Not included in the claim will be carburetor, water pump, distributor, clutch and pulleys.
9. A claim will not be accepted should officials determine that the claim is made on someone else's behalf or the fee is from more than one party.
10. Failure to pull a claimed motor will result in the driver forfeiting all money for the event.
11. The driver will be required to pay a fine before they are allowed to compete again.
D. Built Motor Option
1. Maximum 362 cubic inches.
2. GM, Ford and Chrysler cast iron small block only.
3. Deburing permitted.
4. No polishing permitted inside of block.
5. Oil return holes may be polished and have screen wire installed.
6. Any solid flat tappet cam & lifters permitted, NO ROLLERS, lifters must be stock diameter.
7. Wet sump oiling systems only permitted.
E. Cylinder Heads
1. Any 23° cast iron heads.
2. Maximum valve size: Intake 1.94, Exhaust 1.60
3. No polishing, porting or matching of port permitted.
4. Screw in studs, guide plates, valve springs, retainers (steel), roller rockers must be independent stud type.
5. No titanium valves or retainers permitted.
G. Intake Manifold
1. Any cast iron or aluminum single carb manifold permitted as cast NO modifications.
2. No polishing, porting, or matching of ports permitted.
H. Exhaust
1. Any collector type headers single flange permitted, 180 degree or tri-y headers prohibited.
2. Exhaust must exit behind the driver and out the right side of the car.
I. Carburetor Built Motor
1. Holley BOX STOCK 2300 two barrel # 7448 must be used on built motor.
2. Venturi and throttle bore size to remain box stock unaltered.
3. No polishing, grinding or drilling of holes permitted in the body of the carburetor.
4. No painting or any other type of coating permitted inside or outside.
5. Choke and choke horn may be removed.
6. All screw holes must be permanently sealed.
7. Booster size and height must remain box stock.
8. Base plate must not be altered in any manor.
9. Stock butterflies & shaft must not be thinned or tapered.
10. Throttle shaft must remain unaltered
11. Screw ends may be cut even with shaft, heads must remain unaltered.
12. One idle hole may be drilled in each butterfly.
13. Any attempt to pull air other than through the venturi is not permitted.
14. Booster center bar may be removed, while maintaining original inside diameter.
15. No casting rings are to be removed.
J. Carburetor Crate Motor
1. Holley 650 # 0-80541-1 will be permitted on GM CRATE # 88958602.
2. Holley 390 # 0-80507-1 only on GM CRATE # 88958604.
2. Carburetors must remain BOX STOCK other than the jets & power valves.
K. Throttle Springs
1. A minimum of two throttle springs will be required.
2. Wide open throttle stops are highly recommended.
L. Carburetor Spacer Built motor
1. Two hole solid aluminum permitted not to exceed 3/4”’ thick.
2. Holes (bores) to match carburetor base plate.
3. Only one paper gasket per side may be used not to exceed .065 thick.
4. No tapering or beveling permitted.
M. Carburetor Spacer Crate Motors
1. GM 602 crate: ANY spacer permitted must be made of aluminum.
2. GM 604 crate: four hole or open only, aluminum maximum thickness 3/4” only one paper gasket per side may be used not to exceed .065 thick.
3. No tapering or beveling permitted.
4. Tapered spacers prohibited.
N. Air Intake
1. Air cleaner must not be removed at any time during the race or practice.
2. Only round paper dry element mm. 14 inch & max. 16 inch in diameter.
3. Maximum height of five (5) inches must be used at all times.
4. Element may not be sprayed or soaked with any type of chemicals or liquid.
5. All air must be filtered through the element.
6. Air cleaner housing must be made of metal type.
7. Top of housing must be solid with no holes.
8. It will be permitted to shield the front half of the air cleaner.
9. The shield must not be higher than the top of the element.
10. Top and bottom of the air cleaner housing must be of the same size.
11. A maximum of one inch from the filter to the lip of the housing will be permitted.
12. Cowl induction, air ducts or baffles will not be permitted.
13. An opening of 2 ½ x 20 inches will be permitted to be cut in the hood at the base of the windshield.
14. A Five Star or AR Bodies fiberglass-only cold air box permitted (NO CARBON FIBER).
O. Engine Placement:
1. Measured from the center of the number one spark plug to the center of the upper ball joint.
2. GM two and a quarter (2 1/4”) inches.
3. Ford and Chrysler four and a quarter (4 1/4”) inches.
4. Engine must be within one (1”) inch of the center of the frame.
5. Center of the crank shaft must be no lower than nine and a half (9 1/2”) inches from the ground.
P. Transmission
1. Must have OEM type with at least two (2) forward and one (1) reverse gear working.
2. NO Rankin direct drive, Rankin type direct drive, direct drive, cluster disconnect, quick change, or automatic transmissions permitted.
Q. Clutch
1. Multiple disc clutches permitted.
2. Minimum 5.5” diameter.
3. No carbon fiber clutches permitted.
4. Clutch housing assembly or bell housing may be made of steel or aluminum.
R. Spindles
1. Aftermarket spindles permitted.
2. Homemade and ¾ ton spindles permitted must be made of steel.
S. Brakes
1. Front and rear disc brakes mandatory. Brakes on all four wheels must be fully functional.
2. Any caliper permitted.
3. Only cast steel rotors permitted.
4. Rotors must maintain a minimum thickness of ¾ inch.
5. Rotors cannot be drilled or slotted completely through.
T. Ignition
1. Breaker-less or dual point systems permitted.
2. Ignition boosters, racing coils and high performance wires permitted.
3. No magnetos or crank trigger systems permitted.
4. Alternators permitted.
5. Only one battery permitted with a maximum of sixteen (16) volts.
6. Must be mounted outside the driver's compartment.
U. Wheels
1. Racing steel wheels only.
2. Maximum ten inches (10”) wide.
3. Air bleeders are NOT permitted.
V. Tires
1. Hoosier, Goodyear or American Racer must punch 46 hot.
W. Fuel System
1. Manual block mounted stock type fuel pump only, electric fuel pumps or any type forced induction is prohibited.
2. No icing or cooling of fuel system.
3. A racing fuel cell mandatory 22-gallon (U.S.) maximum. Fuel cell must have a minimum of completely around the cell. Fuel cell must be mounted securely (bolted) behind the rear axle of the car. Cars must have a minimum 1/8" steel plate, or similar strength aluminum plate, between fuel cell and rear end. A similar plate at the rear of the fuel cell is recommended. All cars must have protection bar at the rear of the fuel cell.
X. Fuel
1. Track fuel only minimum 10 gallons.
2. Fuel will be subject to test at any time, mixing of fuels (gasolines) or power additives is prohibited.
3. Receipt required at time of payout.
Y. Shocks
1. Racing single adjustable shocks ONLY.
2. One shock per wheel, canister shocks prohibited.
3. Shock or suspension adjusting from the driver’s compartment is prohibited.
4. No bump stops will be permitted on the shocks, inside the shocks, or on the chassis.
Z. Rear ends
1. Quick change rear ends permitted.
2. Aluminum tubes permitted.
3. No independent rear suspension permitted.
4. Cambered rear ends permitted maximum 1.5 degrees.
5. No titanium axles or hubs permitted.
AA. Starter
1. All cars must start under their own power.
2. Aftermarket starters permitted.
BB. Cooling System
1. Aluminum water pumps and radiators permitted.
2. Electric fans permitted.
3. All cars must have a catch can or hose exiting at the base of the windshield.
4. Water only No antifreeze permitted.
CC. Springs
1. Coil over springs permitted.
2. One spring per wheel.
3. Leaf springs permitted on rear only.
4. No coil binding permitted.
DD. Body.
1. Flat sided dirt bodies recommended, must have plastic nose piece.
2. Asphalt full template body permitted a weight break of 50lb.will be allowed.
3. Maximum front over hang is 47 inches.
4. Must have fiberglass or metal to cover top of roll cage.
5. Minimum roof height 47 inches.
6. Maximum quarter panel height 36 inches.
7. Maximum rear over hang 46 inches.
8. Minimum window drivers side 14 inches.
9. Maximum body width and rear spoiler 77 inches.
10. Spoiler maximum of 8 inches of material.
11. Maximum of three forward braces.
12. Windshield must be no less than 1/8th inch thick Lexan.
13. Minimum ground clearance 4 inches.
14. No carbon fiber body pieces of any kind.
EE. Tread width
1. Maximum of sixty six inches (66”).
FF. Interior
1. Cars interior must be complete and shield driver from the ground and engine Compartment and fuel cell area.
2. On-off switch must be located on the dash within easy access of driver as well as right and left window.
3. On-off must be clearly marked.
4. Quick release steering wheel is mandatory.
5. Steering wheel must have a center pad.
6. All roll bars surrounding the driver must be padded.
7. A window net must be installed in the driver's window opening.
8. The net must be made of nylon with no less than one inch squares.
9. The net when closed must fit tight.
10. The net must use a quick release latch and be welded to the roll cage.
11. Rear view mirrors permitted inside the car only.
12. Head and neck restraint system is highly recommended; restraint must meet or exceed SFI specification 38.1. APPROVED NECK COLLAR MANDATORY.
GG. Frame/Chassis
1. Straight rail, perimeter and OEM frames recommended.
2. Tube chassis, square 2”x2” minimum & round tube 1-3/4” minimum permitted.
2. No chassis adjustments from inside the car other than brake bias.
3. Frame and roll cage must be inside the left front and left rear wheels.
4. Minimum ground clearance will be 4 inches.
5. Minimum wheel base will be 101 inches.
HH. Roll cage
1. Roll cage must be approved by officials.
2. Round steel tubing minimum of 1½ OD.
3. Minimum wall thickness of .090.
4. Roll cage will be of box type with front and rear cross bars.
5. A minimum of four bars in the left side door.
6. Must have a minimum of 1/16 plate from the third door bar to the frame.
II. Drive shaft
1. Steel or aluminum drive shaft only permitted.
2. Aluminum shafts must maintain a minimum OD of no less than 3 inches.
3. All shafts must be painted white with car number in black or red.
4. Minimum of two 360-degree loop must be installed no less than 1” x 1/8” steel.
JJ. Sway Bar
1. The main body of the sway bar must be made of steel.
2. The ends may be attached using Heims.
3. Maximum sway bar 1 1/2” in diameter
The SGMP Officials reserves the right to add or delete rules at their discretion to improve the safety or competition in all classes. All decision will be final
Question or Comments www.info@.racesgmp.com
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