FRAME / BODY: Any American made stock passenger car body on a stock

unaltered full frame. No Camaros or Pontiac, Firebirds or Novas. All cars must have

original wheelbase with 108” minimum with no more than 1” difference from side to

side. NO Front wheel drives. Stock appearing aftermarket plastic nose or tail pieces

are allowed. Rear of car must be sealed off, no exposed fuel cell. 5” Maximum spoiler

allowed. Bodies must be centered over wheel wells (front to rear and side to side).

Body panels may be replaced with steel or aluminum but must resemble OEM

appearance and body lines. Must maintain OEM appearing Roof Pillars. Front visor is

allowed on the windshield area MAX 7 inches. Rear of car must be sealed off from

trunk lid/deck to top of frame rails, fender to fender. Sunroofs and T-tops must be

reinforced and enclosed. All glass, plastic, upholstery, lights, mirrors, and trim must be

removed. No part of dash can be more than 28” from back edge of the center of the

hood. Entire trunk floor may be removed. Rear frame horns may be replaced. Must us

2” X 3” tubing no further forward than back of shock tower. ALL openings should be

covered as to isolate the driver, subject to track approval. Racecar body should be

maintained in such a manner as to keep a presentable appearance.

BUMPERS/RUB RAILS: Maximum one inch wide by two-inch-tall steel or Lexan rub

rails allowed – bolted flush to body. All front bumpers must be mounted minimum six

inches from front frame horns. Steel bumper mounts only. No sharp edges allowed on

bumpers, rub rails or bolts. One of three bumper options must be used and must be

OEM height: OEM: Front Bumpers not covered by plastic nose piece must be

complete, unaltered OEM, capped to fender with steel, welded or bolted. If constructing

front bumpers out of tubing it cannot extend past frame horns. Rear bumpers not

covered by plastic tail piece may be unaltered OEM capped to fender with steel,

welded or bolted. No bars past outside edge of body other than rub rails. Aftermarket:

Fabricated tubular bumpers allowed, but must be covered by plastic nose or tailpiece

and bent to fit with rounded ends. Front bumper bar must be minimum 1.5-inch O.D.

(maximum two inch) with 0.083-inch (maximum 0.125 inch) wall thickness. Rear

bumper must be minimum 1.75-inch O.D. with 0.120-inch wall thickness.

ROLL CAGE / SAFETY: Minimum 6 point cage, minimum size 1-1/2” O.D. by .095”

wall thickness. minimum three horizontal bars in driver’s side door, and three horizontal

bars on passenger side door. Five-point quick release seat belt and harness required

for driver. Aluminum racing seat only, must be bolted in using minimum .375-inch bolts.

Seat must remain inside confines of roll cage. Must have three bars in front of driver in

windshield area. Must have door plate on driver side. Door plate should be 18-gauge

metal from rear of roll cage to five inches in front of the seat from top door bar to

bottom door bar.

DRIVER COMPARTMENT: Driver must be sealed off from track, driveline, engine

and fuel cell. Kick and rocker panels may be removed. Front OEM firewall may be

replaced using steel fabricated firewall, 18 gauge or minimum 0.049-inch thickness.

Dash must not extend more than 28 inches back from top of firewall. Dash must be flat,

rear can be no higher than front, except for cowl in front of driver. OEM floor pan may

be replaced using steel fabricated floor pan, 18 gauge or minimum 0.049-inch

thickness, securely welded to frame. Floor pan may be replaced from front firewall to

rear halo supports. Must remain flat/OEM appearing from frame rail to frame rail or

within cockpit, can be no higher or lower than frame rail. Exception is maximum eight-

inch-tall driveshaft tunnel. Tunnel must remain similar to OEM tunnel in size. Cockpits

are allowed; interior may be enclosed. Inner panel on outside of passenger door bars

allowed. Rear firewall may be aluminum or steel and may be located no further forward

than rear halo supports and no higher than bottom of rear opera windows. All holes in

firewalls must be covered with metal. No driver-adjustable devices allowed while car is

in competition except brake adjuster. No mirrors.

ENGINE: All engines used in competition must be able to be used in production U.S.

passenger cars without alteration. Solid motor mounts allowed. Maximum engine

setback #1 sparkplug no further back than center of upper ball joint. Casting and

fittings may not be changed. No machine work on the outside of the engine or on the

front or rear of the camshaft. Flat tappet cam/lifters and stud mounted rocker arms

only. Screw in studs, guide plates and stud girdles allowed. 3/8 or 7/16 studs allowed.

No limit on Engine C.I. but must run GM with GM and Ford with Ford, etc. All coolers

must be located inside the engine compartment. No coolers allowed in the driver’s

compartment. OEM production 23-degree steel cylinder heads or aftermarket 23-

degree steel cylinder heads only. No aluminum heads.

LS Engine Option: 4.8, 5.3 or 6.0 GM LS with OEM pistons, rods and crankshaft.

Standard bore blocks only, no boring cylinders, iron blocks only. Heads must be stock

OEM, no porting or polishing. Untouched cylinder head. Aftermarket valve springs

okay. Must run 500 CFM Holley 4412 2-barrel only. Must be unaltered. Carburetor may

be modified to Holley HP Dorton part no. 0-80583-1. One electric fuel pump allowed.

Must run MSD 6014CT Circle Track GM LS engine ignition control. No other engine

ignition control allowed. Rev limiter must be set at 7000 RPM. All cars with an LS

motor are required to run a fuel pressure safety switch. Must run a decal on the car

stating it has the LS motor. Anyone with such decal and doesn’t have a L S motor will

be disqualified.

602 GM Crate Engine Option: Must run Crate decal in plain sight

Must be unaltered sealed GM 602 crate engine. Upon Inspection, any different,

altered or

missing GM seals bolts will result in disqualification. Motor may utilize any Holley

four-barrel carburetor, all components (float bowls and main body) must be Holley

Manufactured or Holley 4412 2 barrell. Metering blocks and base plate may be billet

aluminum non-Holley. No aerosol-style carburetors allowed.

EXHAUST: Headers, mufflers optional.

INTAKE MANIFOLD: Any catalog mass produced aluminum intakes are okay. No

porting or polishing.

TRANSMISSIONS: Any stock type automatic or manual. Must have one working

forward and one reverse gear. Direct drives are allowed with coupler. Trans. Cooler ok,

cannot be mounted in driver’s compartment. Manual transmissions may use single or

multi disc clutches, flywheel and pressure plate must be steel. Mini clutches are

allowed. 2” minimum Steel drive shafts must be painted white and have a loop 6” from

front u-joint. Automatics must have an approved scatter shield constructed of minimum

.125 X 3” steel, 270 degrees around flex plate. Shield may be welded or bolted to the

floor board inside the car. Manual transmissions must have an explosion-proof

bellhousing. Bert, Brenn, Falcon transmissions are allowed.

FUEL: Pump or racing gas only. NO additives or smells. Fuel cells must be

secured in trunk with a minimum of 2-inch strap all the way around the cell. Flapper

valve or twist lock air craft style cap required.

FRONT SUSPENSION: All components and mounts must be steel, unaltered OEM

in OEM location GM to GM and Ford to Ford. Rubber, nylon or steel lower A-frame

bushings only – no offset or bearing type. No sway bars. Exceptions are weight jacks

allowed – must be in original centerline of spring tower: OEM upper A- frame mount

may be moved or replaced with aftermarket steel non- adjustable mount.: OEM or

OEM replacement ball joints allowed. GM mid-size metric frame- OEM upper A-Frame

may be replaced using aftermarket upper A-frame or Hemi Joint Style A-frame (must

be steel A-Frame). Lower A-Frame may be tubular aftermarket but mount in original

OEM locations. Shock location may be moved and may go through center of

aftermarket upper A-frame, frame may have 3” opening cut for shock clearance. Single

hole shock mounts only. Tie rods, center link and adjusting sleeves may be

aftermarket. NO suspension stops of any kind allowed.

REAR SUSPENSION: All components and mounts must be steel, unaltered OEM

or OEM replacement, in OEM location and match frame. No independent rear

suspension. OEM rubber or nylon control arm bushings only, no offset or bearing type.

Welded single hole shock mounts only. Exceptions are: coil springs may be moved –

front to back, centerline of axle tube can be no further forward than the front of the

spring, or no further back than rear of spring, but spring must remain vertical left to

right: shocks may be moved, but must remain behind rear end housing on metric frame

cars: rear end lower control arm mounts maximum 7.5 inches long, may have

maximum five holes for adjustment. Lower spring perch must be welded to axle tube.

Solid safety chains securely mounted from upper frame rails directly to axle tubes

allowed (cannot be mounted to any floating device, must have slack during inspection).

After market trailing arms allowed as long as they match OEM length center to center

of bushings and bushing diameter. Weight jacks, rear sliders or lowering blocks are

allowed. No torque arms

REAR END: Any steel approved OEM passenger car or truck non-cambered rear

end (housing and carrier) allowed. Safety hubs (floater) allowed. No sway/pan hard

bars. All components must be steel, exceptions are: lowering blocks, and u-joint caps,

and drive flange may be aluminum. One inch inspection hole in housing required. Full

steel spool, steel minispool or welded rear end only. Steel axles only.

SHOCKS / SPRINGS: One steel nonadjustable unaltered shock per wheel. All

shocks must completely collapse at any time. No external or internal bumpers or stops.

No coil over or remote reservoir shocks. No coil over eliminators. One spring per wheel

only. Minimum 4.5 inches O.D., maximum 20 inches in free height, non-progressive

coil springs only.

STEERING / DRIVER SEAT: No rack and pinion. All components and mounts

must be steel, unaltered OEM, in OEM location and match frame. Exceptions are: bolt

on spindle savers allowed, OEM steering column may be replaced with steel knuckles

and steel steering shafts. Quick release required – steering quickening and steering

wheel may be aluminum. Steering boxes must remain in stock location. The driver seat

may be no further back than 25” forward of center line of rear end housing measured at

the base of the seat.

RADIATOR: Any (1) radiator that fits in original location without any body

modifications is allowed. Water pump mounted fans only. NO electric fans. Fan

spacers ok.

IGNITION: One 12-volt battery only. Must be mounted securely in rear of driver’s

compartment or trunk area. Battery in driver’s compartment must be enclosed. One

distributor in stock location only. May run point or HEI style distributors. May run

aftermarket MSD style distributor and box. Plugs and wires may be aftermarket.

Ignition on/off switch must be clearly marked. NO traction control devices of any kind.

BRAKES: May use stock type master cylinder and brake components or

aftermarket racing master cylinders. Must have at least 3 working brakes. Right front

may be blocked. Brake bias adjustment allowed. Disc brakes allowed. No aluminum or

composite rotors. Must use stock type steel rotors front and rear.

TIRES AND WHEELS: 8” maximum wide wheels allowed, 15” diameter steel

wheels only, wheel covers and mud plugs right side only. Bead lock allowed on right

side only. NO bleed-off valves. Must run 1” steel lug nuts. Tire must durometer 45 or

higher 15 minutes after race. Grinding, sipping and grooving allowed.

WEIGHT: Weight may be securely added in trunk or under the hood, but not in

plain view or within the driver’s compartment. Weight must be painted white with car

number on it. Car must weight minimum 2950 lbs. With driver after race. Loss of bolt

on weight during competition will be an automatic disqualification