No A-Mod driver's can drive in B-Mod Class

Frames - Factory production complete full American passenger frames only. Frame rails must extend to a point beyond the base of driver's seat. Rear clip may be fabricated out of tubing. Front and rear pick-up loop required, otherwise bumpers or other pick-up point will be used.

Bodies - Same as A-Mod bodies, except for REAR SPOILERS optional.

Wheelbase - 108" minimum, 112 inches maximum both sides.

Roll Cage - Must consist of continuous hoops not less than one and one-half Inches outside diameter and must have a wall thickness of at least .095". Must be frame mounted in at least six (6) places. Body mounted roll cages not acceptable. Must consist of configuration of front and rear hoops connected by tubing on sides or side hoops in a manner deemed acceptable by the inspector. Driver's head must not protrude above cage with helmet on while strapped in driver's seat. Roll cage must have a 3/16" inspection hole in non-critical area. Must have at least three horizontal bars at driver's door welded to front and rear of roll cage members.

Weight - Minimum weight 2,450 pounds with driver after race. No tolerance.

Wheels - Wheel width must not exceed 8". No aluminum wheels. Bead locks allowed on right rear only. Wheel discs (Mud Plugs) allowed but must be bolted or welded or foam type. No ZUS fasteners.

Tires - American Racer G-60 (KK704) Modified tires. Max. tire width of 9", mounted on a conventional one-piece steel wheel with a max. width of 8". Tires maybe re-grooved. May run 8” asphalt takeoffs.

Differential/Rear End - Any passenger car type or truck rear end may be used. No aluminum. No quick-change devices allowed. Floater rear ends are allowed.

Brakes - Disc or drum brakes may be used front and rear. No aluminum disc or brake calipers allowed. Brakes must be operational on all 4 wheels and must lock up all four wheels during inspection.

Fuel Systems - Gasoline only. No oxygen bearing additives. No pressurized fuel systems. Fuel cells mandatory. Fuel cells must be encased in an approved metal container of no less than 20-guage steel or 1/8" aluminum. Fuel cells must be mounted between frame rails as far forward as possible and using four 2" by 1/8" metal straps, two in each direction. Bumper must be equipped with a drag loop extending below bottom of the cell. Fuel cells must not extend below the rear end housing. 32. gal maximum. No electric fuel pumps.

Bumpers - Bumpers must be used front and rear. Front bumper must be mounted on frame end and be of a semicircle configuration with the bottom loop parallel to the ground. Front bumper must be 10" high from bottom bar to top of top bar. Material must be one and one-quarter inch minimum, 2" MAXIMUM O.D. steel pipe. Rear bumpers may be constructed of pipe, square tubing, but must not have sharp edges. Rear bumpers and nerf bars must not extend beyond width of rear tire. Bumpers must be able to support car when lifted by wrecker.

Seat & Seat Belts - Racing seat mandatory. All cars must be equipped with an approved quick release type seat belt and shoulder harness securely fastened to frame and roll cage. Seat belt material should be at least 3" wide and cannot be older than 2 years. Seat and steering wheel may be located to suit driver's taste, but must be kept on left side of car.

No center steer.

ENGINE OPTIONS:

Spec Engine - Must use OEM cast iron, American make V-8 engines only. All engines must be able to be used in conventional passenger car without alterations. External engine casting and threaded holes cannot be altered. No aluminum , titanium or carbon fiber components allowed. Maximum cubic inch limits: GM 361 c.i., Ford 360 c.i., Chrysler 370 c.i., no tolerance. No 400 or larger cubic inch parts allowed. No aluminum valve train parts allowed. Engine must appear strictly stock. Only stock appearing crank and rods. No aluminum or light weight engine parts allowed. A minimum 1" plug above the oil level in the side of the oil pan recommended. If you do not have a plug in oil pan the pan will have to be removed at time of inspection.

Genral Motors: Must be 3.48" stroke and 4.060" maximum bore. COMPONENT GUIDELINES: Must use one of following blocks, 3892657, 3914678,3932388, 3932386, 3956618, 3970000,3970006,3970010, 3970014, 10066033, 10066036, 14010207, 14010209, 14010287, 14016376, 14016379.

Heads GM - Max. 2.02" intake valves and 1.60" exhaust valves. Studs may be pinned or 3/8 screw in studs only. roller tip rockers OK , Poly locks allowed. stud girdles OK. No porting, polishing or alterations of any kind to intake or heads. Flattop or dished pistons only. Must  use flat tappet cam and lifters. No mushroom liters. Cannot alter  lifter bores. May use oil restrictors. No vortec or bowtie heads. OEM diameter springs must match heads. Any length push rods allowed. Double-hump heads ok,World product part/casting # 4266gn8b chevy,53030 ford vortec heads allowed,no pro-action vortec or bow tie heads allowed.

Ford: Stock cast iron blocks 260, 289,302,351. Max. 360 cubic inches. Any Ford cast iron OEM production cylinder head with in line valves (no canted valves) and with valves no larger than 2.04" intake and 1.70" exhaust. No SVO heads or blocks. Flat top or dished pistons only. No aftermarket heads allowed. No porting, polishing, or alterations to heads of any kind. Flat milling allowed. Guide plates. screw-in studs (0.375" max) and poly locks allowed, no stud girdles. Stamped steel, OEM style, or stamped steel roller tip stud mounted (0.375" max) rocker arms only. Any length push rods allowed. OEM diameter springs must match heads.

CHRYSLER:  Stock cast iron blocks 273, 318, 340, 360.  Maximum 370 cubic inches. Flat top or dished pistons only. Any OEM factory production Chrysler heads allowed with inline valves (no canted valves) no larger than 2.04-inch intake and 1.70-inch exhaust.  No porting, polishing, or alterations to heads of any kind. Flat milling allowed. No W-2 or aftermarket heads allowed.  Chrysler may use OEM rocker arm bars.  OEM diameter springs must match heads. Any length push rods allowed.

Track has option to enforce these restrictions with a cubic inch pump gauge, or by visually checking parts and part numbers Disqualification and loss of points if found illegal.

FRONT SUSPENSION -Front suspension must match frame and be in stock location. Parts must be replaceable from stock OEM type parts from same type suspension except upper A-frame and A-frame mount. Tube type upper A-frame may be used. Fabricated A-frame mount may be used but must be in stock location. Lower A-frame cannot be altered. Stock passenger car spindles only. No fabricated spindles. Adjustable strut bars may be used on front end only. No coil over shocks allowed either front or rear. One shock per wheel. Steering box must be stock OEM type and be in stock location. No rack and pinion steering. No center steering. Adjustable sway bars allowed.

REAR SUSPENSION - Two options: Aftermarket three link design or multi-leaf spring design.. All components must be steel. All mounts and brackets must be welded or bolted solid.

A.) Three link design requirements: Must use minimum 16-inch long lower control arms. Must use one upper control arm, solid tube only, (no pull bar spring or biscuit assembly), located at top center of rear end housing and remain centered on housing over drive shaft. May use minimum 19-inch long panhard bar located behind rear end housing or minimum 19-inch long j-bar mounted to a steel pinion bracket. Measurements are from center of heim joint to center of heim joint. May mount rear spring directly over axle housing or use coil over eliminators (sliders). Lower spring perch or coil over mount must be welded to rear-end housing. No birdcages or floating mounts allowed. Must use steel upper weight jack if spring are mounted over axle housing.

B.) Multi-leaf spring design requirements: Must use steel multi-leaf springs with no additional suspension components besides one shock per wheel. Adjustable aluminum lowering blocks allowed.

REAR END - Any steel approved OEM passenger car or truck non-cambered rear end allowed, must be centered in chassis. All components must be steel, except lowering blocks, axle cap, and drive flange. Safety hubs (floater) allowed. No quick-change devices. Inspection hole in housing required. Mini-spools only. Ring gear, center section and yoke cannot be lightened. Solid steel axles and one piece drive flanges only.

CARBURETOR

May use any Holley 4 barrel  vaccum secondary with or without one inch thick, one piece intake-to-carburetor spacer. Maximum .100 inch thick carburetor gaskets only.  Carburetor not subject to claim.

Any dual plane in take manifold, No performance RPM or A.r gap manifold.

OIL PANS - Extra capacity oil pans are permitted. No dry sumps allowed.  Oil pump must mount in stock position.

STARTER - Engine must have working starter and must be capable of starting car on demand.

TRANSMISSION/DRIVE SHAFT: All forward and reverse gears must be operational, plus a neutral position. With engine running and car in still position, driver must be able to engage car in gear and move forward, then backward. Only OEM production transmissions allowed. No ‘in and out’ boxes or quick-change devices allowed. Functioning shift levers must be in OEM location. One steel or aluminum OEM style/size flywheel or steel OEM style/size flexplate allowed, must be bolted directly to end of crankshaft.

A.) Automatic: Must be unaltered, two or three speed, OEM production case with a functioning stock appearing pump. Must have an approved scatter shield constructed of .125-inch by three-inch steel, 270 degrees around top of flex plate.  Splined drive flange coupler with internal pressure relief device, gate valve, or torque converter (10-inch min) only. Hydraulic lines may not extend in to cockpit .

B.) Manual: Must be unaltered, two, three or four speed in OEM production case. No five (or more) speeds allowed.  Must have working clutch inside explosion-proof steel bell housing with one hole for throw out bearing lever or hose, must be 270 degrees around top of clutch and flywheel area. 

7 1/4"  MINI-CLUTCH ALLOWED. Components must rotate, consistent with engine rpm, while car is in any gear.  No Bert, Brinn, or Falcon type transmissions allowed.

DRIVE SHAFT: Minimum two-inch diameter, white, steel drive shaft. Steel slip-yokes only. 360-degree drive shaft loop required and must be constructed of at least .25-inch by two-inch steel, or one-inch tubing, mounted six inches back from front U-joint.

BATTERY - All batteries must be mounted in a safe manner.

HELMETS & FIRE SUITS - Helmets are required and must be worn at all times car is on the track. All drivers must wear fire suits of a flame-retardant nature. Two-piece suits are allowed. Fire resistant gloves are mandatory. Fire resistant boots are highly recommended..

EXHAUST - Any collector type header allowed. Exhaust must be directed away from areas of possible fuel spillage. No zoomies.

KILL SWITCH, FIRE EXTINGUISHER, WINDOW NET - A kill switch is required within easy reach of the driver. This switch must be clearly marked OFF and ON. Weights and/or loose objects are not allowed in the driver's compartment.  All cars must be equipped with quick release type window net on driver's door. No rear view mirrors of any kind. No radio communication or sound equipment of any kind.

GAUGES/ELECTRONICS - 12-volt ignition system only. HEI distributor only. OEM firing order cannot be changed. Ignition rotor, cap, coil and module must remain OEM appearing. No ignition boxes, remote coil or accessories. All wiring must be visible for inspection. Only gauges allowed are analog oil pressure and water temperature and analog tachometer (memory recall allowed). No electronic traction control ALLOWED

FORD-  Any OEM production block

Crankshafts strokes allowed:

GM -302 CID -  3.0

        305 CID - 3.48

        307 CID - 3.25

        327 CID - 3.25

        350 CID - 3.48

FORD- 289 CID - 2.87

            302 CID - 3.0

            351 CID - 3.50

CHRYSLER- 318 CID - 3.31

                      340 CID - 3.31

                      360 CID - 3.58

OEM Blocks allowed

CHRYSLER-  Any OEM production block                                                          

 

Heads: GM  3986336, 3986339, 3986339x, 3986388, 3932441, 3973487, 3973487x, 3973493, 3951598, 468642, 333882, 3998920, 3998991, 3998993, 3998997

FORD- Any OEM production head with inline valves. ( NO CANTED VALVES!!! AND NO SVO HEADS!!!!!!)

CHRYSLER- Any OEM production head with inline valves. ( NO CANTED VALVES!!!! AND NO W-2 HEADS!!!!!)