Grandstand Attractions Inc.

Demo Derby Promoter

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Modified Rules
Super Stock Rules
Semi Stock Rules
Bone Stock Rules
Compact Rules
Truck Rules
Lawn Mower Rules
Power Wheel Rules
Qualifiers Midwest Championship
Monroe County Fair






Stock class is open to all men and women 16 and over. 16 and 17 year old must have a notarized permit signed by parent/guardian. Driver must have a driver’s license. In fairness to all, the following rules and regulations shall prevail.


Driver may move forward or backward. Driver must make contact every 60 seconds or be disqualified. No sandbagging. If you sandbag the race will be stopped and a sandbagger flag will be put on top of your car. No team driving allowed not even on a sandbagger. Cars must move when hit or show visible damage. No driver’s door hits allowed.

PRIZE MONEY             

Prize money is different at each show. Look at our schedule to find out the prize money.


Each car/driver shall pay $40.00. Each pit person shall pay $20.00 unless stated different on our schedule page. All drivers and pit persons must sign waiver and release of liability before entering pit area or track. Entries will be accepted up to 1 hour prior to race time.


This class will be limited to 1980 to 2002. No screws allowed. NO PLASTIC GAS TANKS (heavy duty plastic racing fuel cells are allowed). No wedging, no sedagons, no jeeps, no trucks (ranchero and el Caminos are considered trucks), no carryalls, no Hearst, no limos, no convertibles. All glass, chrome, pot metal, lights, carpet, headliner, back seats, fiber glass and anything else that is flammable must be removed before reaching the exhibit area (do not break glass down in the doors). Trunks must be empty of all debris, spare tire rims, parts, etc. Wagons must have spare tire flap removed or hole cut in it for inspectors to see. ABSOLUTELY NO welding besides what is stated in these rules. UNLIMITED 9-WIRE. 9 wire cannot go to cage or halo bar.


You must have number on both front doors big enough to read and bright enough color to see. Also must have number on roof with name on roof above front doors. Use your choice of number. No profanity allowed on cars.


Engines must be Chevy to Chevy, Ford to Ford etc. stock only. You may use 2 chains to retain one on each side. You may use header pipes. You may use half cradle to mount motor only. Must have factory bottom mounts. ILLINOIS AND MISSOURI ONLY MAY DO MOTOR SWAPS.




Transmission coolers are allowed. No protectors must be stock. Keep safety in mind when installing coolers


Must be in a secure position and be covered with something nonflammable like rubber tube, rubber floor mat, etc. Batteries must be secured so they don’t move. 2 12v batteries max.


Rear ends must be 5 lug, GM to GM, Ford to Ford, etc. Locking of rear ends permitted. MUST BE MAKE AND MODEL OF CAR (no ford nine inch or 8.5 unless that yr. and model came with it)


May be shortened or lengthened or you may use slip drive shaft.


No welding suspension parts what so ever must remain stock UNLESS STATED BELOW

*May be shortened or lengthened with no more than one inch overlap. No other reinforcement. A-arms may be bolted with 1-5/8 bolt or nine wired (with 4 wraps) or 1-3/8 chain (1 wrap) in no way to be used as reinforcement.

Spring spacers allowed


The steering column must be gm to gm, ford to ford etc... you may change steering column from firewall to steering wheel only. Brakes must be stock and work. All components must be stock. You may put shifter on the floor. You can change gas pedal but must be in stock location.


Hood must remain in factory position. 6 hood bolts allowed only 2 may go through the frame outside of radiator. Bolts must not be any bigger than ¾ with washers no bigger than 6 inches outside diameter. You must have 2 holes cut in the hood big enough for fire extinguisher. Not directly over carburetor. You may use 20 bolts around header holes no bigger than SAE 3/8 with washers no bigger than 1 inch outside diameter. Must be factory height on spacers and not welded.


You can use 4 ¾ bolts in trunk and 2 may go through frame with washers no bigger than 6 inches outside diameter. Trunk lids must remain on factory hinges. Tucking or V’ing of trunk lid is allowed, but absolutely no wedging. You may chain or nine wire. NO MORE THAN 50% OF TRUNK MAY BE TUCKED. You may also weld trunk lid 5 inches leave 5 inches with 2 inch x ¼ inch strap. Or bolt with 12 3/8 bolts. Creasing allowed but cannot be double creased.


No seam welding, no patching. Pre-denting is okay...Creasing is allowed no double creasing.


Fenders may be trimmed and 10 bolts may be used per fender. Bolts are to be no bigger than3/8 with washers no bigger than 1 inch outside diameter. Quarter panels must remain vertical within 3 inches of OEM position


Must be factory. Bushings must be factory. Body bolts if missing or broke may replace with same size as factory bolt.3 inch washers allowed.


*Absolutely no welding on frame. No reinforcing of frame what so ever. You can notch the frame. PATCHING OF FRAMES. Pre ran cars you can use 4-4x4x1/4 flat plate but frame must have damage. Must have a least a 4 inch gap between all plates and brackets.


Driver’s door may be welded solid with a strap no bigger than 3 inches, on the outside only. All other doors you may weld 5 on 5 off with strap no bigger than 3 inches. Or you may chain or wire doors shut. On wagon’s tailgates NO WELDING. You may chain or nine wire in four places.


*You may have a cage with two side bars and three cross bars. The cage cannot extend past the dash area in the front and must be no further back than 2 inches in front of inner fender wells in back... This can be welded in. Absolutely no kickers. You may have a halo bar. (Must be vertical) and within 12 inches of driver’s seat. None of the cage or halo can connect to the frame. Halo cannot connect to the windshield bars or the roof sign. N0 gas tank protectors. Cage must be a minimum of eight inches off floor and no higher than bottom of door windows


Must be 80 and newer bumper. . They can be welded on with 4-3x3 x1/4 flat plate 2 per side or wired, chained or bolted from mount to mount. No welding of shocks or brackets. If you have an aluminum bumper you may change it. **Exception you can use a back bumper off of any year car but must be fastened on as stated above. You may load your bumper frame rail to frame rail, inside of bumper only. Welding of skins permitted.


Maximum of 6 gallons of gas. Fuel cells/metal boat tanks must be placed in back seat area and properly secured. NO STOCK TANKS. Fuel cells must be secured so there is no movement (Do not use bungee cords for this). If tank is not secure you will not be running. Fuel cells must have secure caps and be leak proof. All fuel lines must have no leaks. Stock gas tanks must be removed or have holes in them and washed out. NO PLASTIC TANKS (heavy plastic racing fuel cells may be used). You must have a shield of metal or tin between driver and gas tank (this may be mounted with screws).


Tire inside of tire is okay. Fork lift tires okay. No fluid inside of tires. Valve stem protectors okay. NO reinforcing of rims except around bolt holes (2 inch maximum on outside diameter of lug holes).

This is a SEMI MODIFIED class it will remain a SEMI MODIFIED class so do not do any more than what is stated in these rules. Do not do anything to make your car illegal after inspection. If this happens you will be disqualified and no return of entry. Officials have the right to re-inspect you cars at any time. THIS IS THE MAXIMUM OF WHAT YOU CAN DO IN THIS CLASS



  1. Cars must have at least one bar attached from roof down to dash area to prevent hood from coming in.
  2. Radiator over flow hoses must be pointed at the ground and fastened so they cannot shoot water towards officials or other drivers.
  3. Header pipes must be pointing straight up cannot be aimed towards front of cars.
  4. Note if you have a hole in the fire wall it should be covered.
  5. Safety belts required.
  6. O.T. approved helmets mandatory. Any driver using an open face helmet will not be covered by insurance if facial injury occurs.
  7. Safety glasses or shield recommended.
  8. Mandatory-you must wear long pants and a shirt (fire suit recommended).
  9. 2 fires and you are out unless it’s a fuel fire then it’s just 1 fire and you are out.
  10. No alcoholic beverages or drugs allowed in pit area or on the track.
  12. Note management does have the right to disqualify a car/driver at any time. Any person on track or causing trouble and not complying with the rules will be asked to leave (we can have you escorted off or have you arrested and you can be banned from running or being in pit area at future G.S.A. events).
  13. Protests must be made no later than 5 minutes after the heat in question. No protests will be taken after feature event. Only Drivers are allowed to protest a car. Officials will re-inspect the top cars.


If you have any questions please call: Regina McDermith @ (217)306-4025