2/9/2023
Columbus Speedway
Factory Stock Rules
Factory Stock Rules
IF THE RULES DON’T SAY YOU CAN IT MUST BE STOCK! NO EXCEPTIONS!
Definition: Any Chrysler, Ford, or GM car that was/is mass produced for the United States auto market
Engine option 1: (Protest 800)GM 602 sealed crate engine. Any altering of bolts or suspicious seals will be disqualified until proven legal. Must run 500 CFM Holley 2-barrel GASOLINE ONLY NO E85
Engine Option 2:(Protest 800) Stock steel small block must not exceed 362 cu in. .060 max overbore, Stock stroke all casting numbers must be visible. No gear/belt driven timing components. .480 max lift @ top of valve, solid or hydraulic lifter ok, no roller or mushroom lifters, no ceramic lifters. No dome top pistons. Stock length I beam rods, no H beams allowed, Stock cast iron heads, oem vortechs ok, stock type stamped steel rocker arms, no roller rockers, no roller tips, screw in studs and guide plates ok. Absolutely no porting or polishing. 2 valves per cylinder, max intake 1.94, max exhaust 1.50, must run Holley 500 CFM carb. Any cast iron or aluminum dual plane intake may be drilled for vortech heads, absolutely no grinding, porting or polishing allowed. Must pull 16” of vacuum at 1000 RPM and not exceed 180lbs of compression after race. GASOLINE ONLY NO E85
Bolt on parts:(Protest 250) Aftermarket power steering pump and steering quickener ok, Carb adapter/spacer must not exceed 1 inch. 14x4 standard air cleaner or smaller, stock electronic (HEI) mounted in stock location. If alternator is used must be stock 12v OEM design. Aftermarket harmonic balancer ok. Aftermarket water pump ok. Any manifold or header that exits inside frame and under car. Single disc clutch 10.5 minimum, no aluminum flywheels, stock flywheel 14lb minimum, pressure plate 13lb. Stock disc type clutch and flywheel required. Stock torque converter 11 inch minimum with auto trans, shift kit ok. Blow proof bellhousing required or ¼ inch steel barrier over stock bellhousing. Torque converter must weigh a minimum of 38lbs and be functional. .
Chassis/ Suspension: (Protest 150) Chassis must remain stock for year of body, Stock wheelbase with minimum of 106 inches, no rack and pinion steering unless it came on the car, ford 9 inch ok in any make but keep all brackets in stock location. No floating brakes, no engine setback, if battery is in driver compartment it must be in a battery box and securely fastened down, Racing shocks ok, must remain in stock location, must be nonadjustable and non- rebuildable, and all shocks have a 75.00 claim rule. Front and rear suspension must remain stock, in stock location, it can be reinforced for strength. No weight jacks, no bump stops, racing springs ok, but must remain in stock location. Tubular upper control arms ok, must be in stock location
Body: (Protest 75) Stock body or sheet metal but must look stock appearing, this rule will be enforced (IT MUST LOOK LIKE A STOCK CAR) hood and deck lid may be hulled, firewall must remain stock and in stock location. No open holes in firewall, stock floor pan to back window, must be firewall between driver and trunk. Enclosed cockpit ok but must have inspection hole. Rear of car must be closed in, aftermarket nose ok. Stock appearing roof and must be level and measure the same from each door. Fabricated bumpers ok. ALL CARS MUST WEIGH 3200 WITH DRIVER AFTER RACE!!!!!!!!!!
Wheels and Tires: (Visual)15x8 steel wheels only, no wide 5, 5 lugs minimum, bead locks right side only. Any DOT street tire or Hoosier H500 or American Racer ar500 or AR stocker, no ,, no mud grips
General Protest Rule. You must first finish within the top 5. if you call
Someone out you yourself must be deemed legal.. Your car will be checked on Shocks and any other suspensions parts Also valve springs, Carburetors , compression and Vacum will be checked as well if deemed legal Then we will began to Tear down the other car if you are found illegal the call out will be Dismissed. All call outs must be done within 10 Minutes after the race is over and cash must be on the Driver.