Body

  • Any full or midsized American made car, 1960 or later.

  • Firewalls and floor may be replaced but must be made of metal. Decking may cover area beside driver and extend to rear of car.

  • Stock appearing bumpers — front and rear. Front and rear bumper bars are recommended. Rear bumper bars must not extend past the centerline of tires and must be capped and sharp edges must be grounded off. You may run an aftermarket front nosepiece.

  • No back of body panel required. [New in 2020]

  • Rear spoiler max. 12” tall x 72” wide overall may be used. May be mounted using a hinge or bent lip. The part attached to decking/ trunk is not included in overall dimension. 3 spoiler supports allowed measuring 12” tall x 24” long max, shaped like a Late Model spoiler side.

  • Body/nose does not have to match engine/ chassis used.

  • Minimum weight with driver after race 2750 lbs. for leaf spring car and stock SS rearends [New in 2020, 2950lbs for 3 link cars]

  • All weight if added must be white with car number on them.

  • All cars must have a tow chain or eyebolt front and rear.

Chassis/Suspension

  • 1960 or later rear wheel drive car frame/unibody. Stock frame may be replaced behind rear-end with tubing. Frame connectors allowed.

  • Stock clip tube rear cars must use leaf spring rear suspension or a 3 link. [New in 2020]Stock clip must extend from the firewall forward to the most forward suspension/steering component. Engine does not have to match clip used. 3 link cars must weigh minimum of 2950 lbs. [New in 2020].

  • Stock lower control arms must be used, but may be modified for stronger ball joints and or
    relocation of shocks.

  • Suspension bushing may be aftermarket. No adding of non-stock components.

  • Steering components may be changed in part or whole assemblies. Quick release hub
    recommended. Rack and pinion ok.

  • Spindles may change, aftermarket rotors ok. Aftermarket pedal assembly and wide 5 hubs OK.

  • Upper control arms and mounting may be changed.

  • Screw jacks allowed on all springs. Leaf springs may use shackles, lowering blocks, and/or sliders. Replacement coil springs must be 4.5-inch min outside diameter. Leaf springs may be composite.

  • Shock allowed in any position. No canister/chargeable or adjustable shocks. 1 per wheel max, 4 total. [Changed in 2020, 3 link allowed but must weigh 2950lbs]

Engine

  • 365 ci max. cast iron V8 engine. Engine may be deburred for oil flow and prepped for racing. No dry sump or lightening allowed.

  • Any cast iron block Chevrolet to Chevrolet, Ford to Ford. No aluminum blocks. Stock type
    aftermarket blocks allowed. No LS blocks allowed. [New 2019]

  • Engine externals are all open, i.e. pumps, hoses, pulleys, brackets, oil pan, etc. Radiator and headers may also be aftermarket.

  • Aluminum Intakes allowed. No porting or polishing of intake of any kind allowed. May be milled to fit, one gasket per side. Spot deburring from factory allowed and will be determined legal or illegal at the discretion of techman. [new 2019]

  • Flat tappet lifters only. Any valve spring, retainers and valves must be steel. Roller rockers, polylocks and screw in studs and guide plates allowed. No aftermarket shaft rockers allowed. Stud girdles are allowed.

  • Any steel crank and rod combination. Any dish or flattop pistons no dome.

  • Any production cast iron head except no bowtie on Chevrolet. May angle mill the heads, must be with-in three degrees of factory stock. No cutting inside the valve pocket. May match port the intake runners ½” maximum. No porting or polishing of ports. Heads may be machined for installation of larger valves, springs, and screw in studs. 2.02 intake and 1.6 exhaust valves max.

  • Aftermarket heads allowed are the GM SR TORKER #042660, Dart #10320010P or #10310010P, or World Products Sportsman II #011250 or #011150. Engine Quest CH3501, 318a, 5303. May angle mill the heads, must be with-in three degrees of factory stock. No cutting inside the valve pocket. May match port the intake runners ½” maximum.

  • Engine must be located with #1 spark plug in front of or lined up with corresponding ball joint.

Fuel System

  • Manual fuel pump or belt drive fuel pump allowed. No electric fuel pumps allowed.

  • Fuel cell mandatory. Protected fuel lines and metal filters recommended.

  • Gasoline only. No alcohol.

  • Single 4 barrel carburetor. No spacers, a 1” max adaptor only allowed for 2 bbl. No stacking of gaskets allowed.

  • Two-throttle return springs required.

  • Aftermarket pedal with toe hook recommended. Cable operated throttle strongly discouraged.

Drivetrain

  • Engine and transmission must match i.e. GM-GM etc.

  • Flywheel must be steel. Hydraulic release bearing allowed.

  • Mini clutches allowed.

  • Transmission must have working reverse.

  • Automatic transmission allowed. Coolers and or lines must be safe for driver. Must use Safety Blanket.

  • Rear-end must be an all steel housing, any brand. GN or wide 5 ok. A magnetic steel tube quick change rear-end will be permitted.

  • Driveshaft painted white.

  • All Manual transmissions must use steel safety bell housing with an inspection hole of at least 2” to inspect clutch assembly.

  • Bert, Brinn transmission or equal allowed.

  • Reverse mount starters allowed.

Electrical System

  • Wiring, switches, and gauges open.

  • Starters open must mount in stock location. Ford type relays recommended for all.

  • Ignition system open except no magnetos or crank fire ignition.

  • Battery must be located and secured safe for driver

Wheels and Tires

  • Hoosier 1350

  • Cut and/or sipe ok. No treating, prepping, softening of tires.

  • Large wheel studs allowed.

  • Any 10” max wide steel wheel allowed.

Safety

  • No radios allowed.

  • Must use Receivers.

  • All cars must have driver’s side window net or metal racing seat with 5 point harness with head rest on both sides.