BODY: Any American made stock passenger car body on the stock OEM unaltered full frame. Stock appearing aftermarket plastic nose piece is allowed, no adding additional material to nose, can be drilled for air. Tail pieces allowed. Rear of car must be sealed off, no exposed fuel cell. No spoilers, wings, air scoops, Bodies cannot be moved from the original body mount and can’t be less than 5 ½” from ground. A front visor is allowed on the windshield area MAX 7 inches. No side or rear window visors allowed. Maximum one inch wide by two-inch-tall steel rub rails allowed - bolted flush to body. All glass, plastic, upholstery, lights, mirrors, and trim must be removed. Cars must be stock appearing. No excessive trimming of fenders or hoods allowed, must maintain stock OEM appearance. Firewall must be full and complete, must be made from 18-gauge steel, must be a minimum of 24” tall. Interior must be completely sealed off from engine, ground, and trunk. Cars must have a complete stock OEM steel roof mounted in OEM location and OEM rake and angle for model or OEM aftermarket fiberglass replacement. All openings should be covered as to isolate the driver, subject to track approval. Hood must have a minimum 54” opening centered over the frame. Trunk must have a minimum 42” opening centered over the frame. Body must be mounted level with the frame front to rear

FLOOR PAN: OEM floor pan may be cut 6” behind front OEM mounts in a straight line across to the other side and be replaced using steel fabricated floor pans made of 18-gauge metal or minimum of .049” thick steel securely welded to the frame. Must remain flat, OEM appearing from frame rail to frame rail, no higher or lower than frame rail with the exception of a maximum tall 8” drive shaft tunnel and similar to OEM tunnel in size. Interior must be completely sealed off from engine, ground, and trunk.

FRAME: Frame must be full and complete unaltered OEM. Rear of frame behind upper shock mounts may be replaced with round, square, or rectangular tubing. Cannot narrow right rear frame for tire clearance. No frame alterations allowed. All Bars forward of cage must be lower than the hood. May not be cut for tie rod clearance or oil pan clearance.

Stock type rear bumper required, or you may run a rear aftermarket bumper but must run an aftermarket rear cover. A fabricated front bumper may be used with the following conditions: cars with aftermarket nose pieces- the bumper may extend past frame rails for support and reinforcement. Must be behind nosepieces. Cars without nosepieces- the bumper may not extend past front frame horns. NO SHARP EDGES. Must have a minimum of 5/16th diameter chain welded to front and rear of car with the design so tow truck can attach to them, this is a DQable item. Rear fabricated bumper and stock rear bumper cars may have a 1-1/2” o.d. safety loop no wider than the factory frame and a maximum of 12” tall.

ROLL CAGE: Minimum four-point cage, minimum size 1 ½ “O. D. by .095” wall thickness. Minimum three bars in driver’s side door, and two bars on passenger side door (three bars if passenger in car) door plate from main loop to front edge of seat.

ENGINE option 1: Must be stock for the make and model 350ci or smaller. Must use cast 4 equal valve relief flattop or dish pistons no gas ported pistons or rings. OEM crankshaft - cannot be lightened. No narrowing, bullnose, knife edge, undercut or drilling of second or third rod throws, Scat SCT-9-10442 or eagle 103503480 is ok but cannot be lightened, counterweights cannot be cut down, ground on or polished. OEM steel Connecting rods only must remain stock OEM length, pressed pins only, weight and shape, Scat SCA 25700P or Eagle EAGSIR5700BPLW is allowed, No lightening of any parts. Aftermarket water pump, mini starter, pulleys, okay steel harmonic balancer and steel oil pan only. Aftermarket power-steering pumps okay and must be belt driven. Metric cars may run a 350. NO stroking or de-stroking. Engine height and setback must be in stock location +/- 1”. GM metric frame center of fuel pump must be located a minimum of 1 ¾” in front of unaltered cross member. Solid motor and transmission mounts okay. No full mid plates. Maximum cranking compression 175lbs. (ignition off, engine turned over 5 compression strokes). Oil pans must have at least a 1” inspection hole with nothing inside of inspection hole blocking inspection scope from seeing rotating assembly. No alterations of stock oiling system. No vacuum pumps.

ENGINE OPTION 2: Chevrolet Performance factory sealed CT350 Chevy small block crate engine (Part #88958602 or #19258602 or #88869602). Must use a maximum 6200 rev limiter mounted away from drivers reach and easily accessible for tech inspection. Must utilize one (1) unaltered cast Holley 4412 two-barrel only with a maximum combined total spacer, adapter of 1”, maximum of two 0.100 thick carb gaskets. Carburetors shall be subject to claim. Must be unaltered and sealed from factory at appropriate points (intake, head, timing chain cover and oil pan) GM twist off bolt engines are not allowed. approved cables Chevrolet performance cap seals and IMCA cable seals are allowed. Any altered, damaged or missing cables or bolts will result in driver being disqualified from that event. Only stock unaltered cast iron exhaust manifolds are permitted. Porting and/or grinding is not allowed. Welding exhaust pipe to manifolds or modifying OEM exhaust flanges is not allowed.

CAMSHAFT, VALVETRAIN, AND CYLINDER HEADS: Hydraulic cam and flat tappet lifters only. 447 maximum lift at valve or .298 lobe lift at cam. Must maintain 14” of vacuum at 1200 rpm. 1.94 maximum intake valve diameter, 1.50 maximum exhaust valve diameter on Chevrolet engines. No hollow valve stems. Stock size and shape valve springs and retainers, no titanium
parts. Stock length and diameter pushrods only. Stamped steel 1.5 rockers on Chevy, 1.6 on Ford and Chrysler, NO roller tips. Open chambered heads only, must be unaltered, OEM NO porting, polishing, coating, no gasket matching allowed. Screw in studs ok, guide plates ok. 305 engines may use 305 heads no vortec. Engine quest part number CH350I and dart part number 10024360, dart part number 91624360 are allowed but must remain as produced absolutely no casting removal below the valve seat or inside the intake and exhaust runners or valve guide bosse. No unshrouded valves, all heads subject to cc test, flat milling only.

Carburetor and fuel system: Cast Holley 4412 2 barrel. no HP carbs or parts, must be unaltered. NO L6R3250B CASTINGS ALLOWED. Casting number L6R199B IS ALLOWED BUT MUST REMAIN as produced by the manufacture including metering plate #707, base plate and bowl. NO screw in air bleeds, NO powder coating, or any modifications. Choke plate may be
removed. 4412 must be cast into choke horn of carb. Maximum spacer and adapter 1” combined total. NO fuel pressure regulators, NO fuel bypass systems. A shield from the top of radiator over the fan is allowed but may not go past the water neck housing. Carb rule applies to engine 1 & 2 as well.

EXHAUST: Any header or stock manifold

INTAKE MANIFOLD: Stock OEM unaltered aluminum or cast-iron intake only. No stock high performance or high rise, No bowties. No porting, polishing, cutting or gasket matching, stock unaltered Edelbrock 2701 and 2101 intakes allowed, absolutely no modifications allowed to intake.

• TRANSMISSIONS: Any stock type automatic or cast iron 3 speed OEM manual transmission. No 4 or 5 speed transmissions. Automatics must have stock appearing working 10” torque converter. Torque convertor must be steel. AFTERMARKET SFI ALUMINUM bellhousings on automatic transmissions IS ALLOWED, aftermarket pan is allowed. Flexplate must be full, unaltered OEM, or OEM replacement. No direct drives. All gears and planetary must remain
  OEM type. Hardened input shaft is ok. Transmission Cooler ok.

• Manual must have single disc 10.5” clutch, flywheel and pressure plate must be steel, minimum 15lb steel flywheel. No Aluminum bell housings on manual transmissions. No mini clutches. Steel drive shafts only must be painted white and have a loop 6” from front u-joint factory mount, chain or flat strap is ok.

FUEL: Pump or racing gas only. No methanol allowed. No additives or smells. Fuel cell must be secured in trunk and have a minimum of 2” x 1.25 flat straps around it, no part of fuel cell can be forward of any part of rear end. Fuel cell must be visible for inspection purposes from the top through a removable stock appearing trunk lid.

SUSPENSION: Front and rear suspension must be stock unaltered OEM for that make and model of frame, ball joints, spindles and all components, right front brake caliper may be removed. Lower control arm bushings must be OEM design only and cannot be steel, aluminum or grease able type. No air shocks. Lower A-Frame mount may not be notched for clearance. No alterations to any part of the suspension or frame will be allowed. May run aftermarket upper a frame, ball joint must remain in the OEM location of a frame on upper control arms 8” or 8 ½” length only, must be left on left and right on right no flipping A frames over. Sway bars must be stock for make and model mounted in OEM mounts. No suspension stops of any kind and my not be touching and suspension stops or A-frame. Steel Shocks only must have OEM style stock type rubber ends, must be mounted in stock location. Cannot space shocks up or down, No bulb-type, threaded body, coil-over, or remote reservoir shocks. No external or internal bumpers or stops. No Schrader valves on shocks. All shocks must collapse completely at any time. Upper and lower trailing arms may be braced for strength

SPRINGS: Maximum length of rear springs 14” tall free height and both sides must be equal height and in stock location. 5” minimum diameter. No spring rubbers, no adjustable weight jacks of any kind, and must sit in unaltered top stock mounts. 110” plus wheelbase cars may use 15” rear springs.no progressive Springs. Both front springs must be a minimum of 11” tall with ½” tolerance.

BALL JOINTS: May run aftermarket ball joints but must be stock OEM dimensions. Rebuildable ball joints ok, May be bolted underneath top a-frame.

REAR END: Stock rear-end for make and model no modifying axle bearings or length May use thick collar around axle seal area to prevent egg shaping. All brackets, control arms, and shock mounts must be in stock location. All trailing arm bushings must be OEM or OEM replacement with OEM design and No Alterations, no soft bushings allowed. Gears may be locked must use
stock unaltered ring gear carrier may weld or use bolt in locking blocks, No scalloped gears. No full spools, Detroit lockers or torque sensing devices. Optional spring cups will be allowed on rearend housing. Must be welded flat on the center line of the rearend and be in OEM location. Rear end housings may be braced.

STEERING & SEAT: Steering boxes must remain in stock location. Aftermarket steering wheel and quick release steering coupling are recommended. Quick steer boxes allowed. All components must be steel, Unaltered OEM, in OEM location and match frame. Exceptions are Tie Rod adjusting sleeve may be replaced with 5” steel tube, bolt on OEM spindle savers allowed. No part of driver seat may be no further back than 25” forward of center line of rear end housing. No knobs, handles, or levers other than the gas pedal and brake pedal allowed for adjustment of carburetor, ignition timing, or brakes.

RADIATOR: Any (1) radiator that fits in original location without any body modifications is allowed. Water pump mounted fans only, no electric fans.

IGNITION: One 12-volt battery only must be mounted securely in rear of driver’s compartment or trunk area if in the drivers compartment battery must gel type only and be completely covered. No voltage generators in series with ignition system, voltage at distributor cannot be more than at battery (12) volts. One stock type distributor, module and coil in stock location only. Ignitions on/off switch must be clearly marked. No traction control devices of any kind. No digital gauges or taches. All cars must have a working transponder mounted on the passenger side firewall facing the ground, any car found without one will be given last place for that race.

BRAKES: May use dual aftermarket master cylinders and Aftermarket pedal OK, crank knobs ok. Must have at least 3 working brakes. Right front may be blocked off, no brake gauges, no electric or manual cut-off switches or valves allowed inside driver's compartment. Optional one (1) manual brake shutoff valve allowed underneath the hood to the right front only. Disc brakes allowed in rear No aluminum or composite rotors or calipers. Must use OEM steel stock
rotors on rear disc. No lighting or modifying of components.

TIRES AND WHEELS: 8” maximum wide wheels allowed, 15” diameter steel wheels only No reinforcing wheels. Right rear 8” beed lock ok. Plastic Mud plugs and wheel covers allowed, ONLY on the right side. Car Number must be on all Wheel Covers. Wheel cover must be plastic, be bolted, no Dzus fasteners, the ring that holds the wheel cover must be welded to the wheel in at least three places. No bleed-off valves. Must run 1” steel lug nuts. Aluminum wheel
spacers only with a maximum thickness of 1-inch combined total per wheel. Approved unaltered Hoosier asphalt F45 or ST1 ST2 ST3 pull offs only. Tires may be grooved and siped, but must durometer 50 or higher WITHIN 15 MINUTES of checker flag, Subject to inspection any time before or after a race. No softening compounds allowed, or wrapping in plastic. Deglazing with sandpaper disc ONLY allowed but cannot leave any grinding marks all tires are subject to inspection before or after a race.

WEIGHT: Weight may be securely added in trunk or under the hood, but not in plain view or within the driver’s compartment must be painted white with car number. Car must weigh minimum 2900 lbs. with driver after race. No weight mounted to rear end housing or any suspension parts, all weight 25 lbs or less may use one ½” bolt, any weight over 25 lbs must use two ½” bolts, no stacking of weight. All weight is subject to inspection, any car losing weight will be subject to disqualification.