ELEGIBILITY: Any 1970 and newer domestic built passenger sedan or coupe available for general purchase. Front or rear wheel drive. No all wheel drive.

BODY: Bodies may be changed between manufacturers but must match wheelbase of unaltered chassis. Roof, quarter panels and deck lid to be O.E. steel without modifications except as needed for tire clearance. Doors, front fenders, and hood may be fabricated aluminum with dimension and shape same as O.E. Complete O.E. floorpan and front fire wall required.

Front and rear (optional) windshield must be a minimum of 1/8 in. lexan. Front windshield must have a center brace.

Exceptions: Midsize metric G.M. chassis may use 5 Star replacement Monte Carlo steel panels.

Doors may be fabricated from a minimum 22 gauge steel.

Aftermarket bumper covers may be used, must match body style but can offer no aerodynamic advantage.

Front half of rear inner wheel well must remain intact. Other interior panels may be removed.

All cars must start the race meet with all exterior body panels in place.

Rear spoiler allowed. Maximum size 5 in x 60 in. attached directly to deck lid.

Out of spec bodies will be corrected to track management satisfaction before being allowed to race a second time.

CHASSIS:　 Minimum wheelbase 101 in.

Leaf cars minimum ride height 7 in. Coil cars 6 in. Full roll cage required. Rear upright can be located no closer than 24 in. from the center or rear axle.

Center of rear axle rearward may be replaced with steel tubing a minimum of 2x2x1/8 in. and must follow original contour.

Fuel cell minimum height 12 in.

No jacking bolts allowed.

Adjustable spring cups may be used as long as shock absorbers remain in stock location.

No lowering blocks on leaf cars, shackles no longer than 6 in. with a maximum of 3 adjustment holes.

Left front upper control arm mount may be relocated for camber adjustment.

G.M. midsize metric and Ford products may have 1 additional set of holes drilled for adjustment of rear trailing arms at frame attaching point. No material may be added for excessive adjustment.

Leaf spring chassis cannot be tied together.

Sway bar maximum diameter 1 3/8 in. Mounted in stock location with O.E. type mounts. Can be made adjustable on one side. Sway bar must be O.E. type 1 piece steel.

Shocks and struts must be commonly available, unmodified, stock mount units.　 No made for racing shocks or struts I.E. PRO-Shocks, QA1, Koni, Bilstein, etc. No adjustable shocks allowed.

Rear trailing arms may be reinforced

Ball joints and steering components must be O.E. type. No mono-balls or adjustable ball joints allowed.

Urethane or solid steel suspension bushings may be used. No mono-balls or heims.

WHEELS:　 Aftermarket wheels allowed up to 7 in. wide with a minimum weight of 19 lbs. Track width not to exceed 64 in.

Exception: 1990 and newer Thunderbird can be up to 65 in.

Track width must be obtained with wheel offset not suspension parts. All wheels must be the same offset.

TIRES: To be announced at a later date.

TIRES MUST BE PURCHASED FROM AN AUTHORIZED SALES REPRESENTATIVE

ABSOLUTELY NO RETURNS ONCE TIRES HAVE BEEN REMOVED FROM SALES AREA.

IF CAUGHT WITH TIRE SOFTENER THE MINIMUM PENALTY WILL BE LOSS OF ALL POINTS TO DATE. MORE SEVERE PENALITIES MAY APPLY.

REAR AXLE: Housing must match chassis, no camber or toe

May be open or locked by welding or a mini spool. No traction enhancing differentials.

Maximum gear ratio 3.73

Right rear racing axle mandatory.

TRANSMISSION: Unaltered automatic transmission only

Stock torque converter onl

Cooler must be outside of drivers compartment

G.M. Powerglide will be allowed

COOLING SYSTEM: Any radiator that fits under the stock hood allowed.

Water with cooling additive only.

Must have a sealed overflow tank.

BATTERY: May be relocated but must be in a sealed battery box.

BRAKES: All cars must have four wheel brakes in good working condition.

No light weight components.

WEIGHT:　 Leaf spring cars ... minimum 3100 lbs. ... 52% left maximum

Coil spring Camero, full frame non-metric cars, and full frame big metric cars... minimum 3000 lbs. ... 54% left maximum

Intermediate metric cars ... 2950 lbs. ... 54% left maximum

All weights are with driver.

ENGINES: G.M. 350 Ford 351W Chrysler 360

Maximum overbore .060 in.

No portion of the piston may extend above block deck.

O.E. cast iron block only

O.E. cast iron straight plug heads only

EXCEPTION: World product #4361 will be allowed

No angle milling

Maximum valve size 1.94 intake 1.6 exhaust

No valves with reduced diameter stems

Stainless valves allowed

Cast or forged stock type crank shaft with no modifications

O.E. steel or stock replacement connecting rods

Pistons can be dished or four valve relief flat top.

Camshaft must be hydraulic flat tappet only with a maximum lift of .450 in. at the valve.

Stock type rocker arms only 1.5 ratio.

Screw in studs and guide plates allowed.

Lifter diameter must be O.E. no sleeving of lifter bores.

Stock appearing oil pan only.

O.E. cast iron 2 bbl. or emissions type aluminum Quadra jet.

Stock type ignition only, may use aftermarket coil and module.

FUEL SYSTEM: Fuel lines must be steel and routed outside drivers compartment.

Mechanical fuel pumps only.

CARBURATORS: Box stock Holley 4412 with common tuning modifications allowed.

The only accepted carburetor adaptors are Mr. Gasket #1929 or 1937.

EXCEPTION: Rochester 2 bbl. may be used as long as all dimensions are as originally produced. Maximum mounting gasket thickness 1/2 in.

No spacers allowed.

EXHAUST: Steel tubing headers with primary pipe no larger than 1-5/8 in. and a collector of the non-merge type no larger than 3 in. allowed. No stepped tubes.

Exhaust system must have mufflers with no leaks, turned down and end under car. Pipe size not to exceed 2-1/2 in.

ENGINE ACC. Cast iron water pump only

Underdrive pulleys allowed

Aftermarket power steering pump allowed.

If it doesn’t say you can do it, you can’t.