| CAR & BODY:
1. 1970 or newer American compact car only, no panel cars or
station wagons.
2. Stock appearing front windshield and rear window support unit,
painted roll bars not acceptable substitute. May utilize a flat
half-windshield, with no wings, mounted to the roll cage. Must
have a minimum of three windshield bars in front of driver.
3. Firewall and floorboards are mandatory.
4. All body parts should be recognizable as factory production
vehicle. Fiberglass or metal duplicates of body parts are permitted.
Homemade body parts may be constructed of steel, aluminum or fiberglass.
All cars in competition must have a complete paint job. No plastic
body parts allowed. Body must be same width, front to rear, and
parallel to the frame.
5. Original roof line of vehicle must closely be maintained. Must
be full size roof. No wings or any other ground effects are allowed
anywhere outside or inside cars. Sail panels must closely resemble
example shown on body diagram and be the same on both sides of
car. Any reinforcing lips on rear of sail panel must be 180 degree
bends.
6. Engine compartment will remain open, no side panels; hood sides
may have maximum four inch drop and must be enclosed at rear of
hood; maximum hood scoop height-six inches. Passenger side of
body must be no further than rear of block. Rear of bodies to
be solid panel at least eight inches high and include car number.
No panel in front of right door to engine compartment. No inner
panels. No car covers.
7. Driver and passenger side windows must have at least 12-inch
opening, measured at center of window, whether the roof or roll
cage, and highest point at bottom of window, whether the interior
or body.
8. Weight limit 2400 lbs. with driver as car comes off the track.
9. Spoilers: Rear spoilers optional. Rear spoiler may be 5”x
60”, spoiler sides boards – 6” to taper to 1”
point length 12” from base.
FRAME:
Frame; OEM complete. 1964 or newer, perimeter American rear wheel
drive passenger car frame only. No sports car frames. Frame must
be full and complete, cannot be widened or narrowed. And must
be able to support roll cage on both sides, except: weight jack
in original center line of spring tower allowed; frame may be
cut a maximum 36” forward from center of rear end housing.
Horns may be removed in front of steering box. Front cross member
may be notched and boxed for radiator and/or steering clearance.
Maximum seven inch wide opening in side of sprint tower for spring
removal. Maximum two-inch wide by four-inch tall frame stiffener
may be welded directly to outside of left side frame rail. Minimum
wheel base 108 inches. Maximum 112 inches both sides. Maximum
overall width (front or rear) shall not exceed 78 inches from
outside of tire to outside of tire. No part of frame can be lower
than four inches from ground except front cross member.
BUMPERS/RUB RAILS:
Steel only. Bumpers must be used both front and rear at all times
and welded, or mounted with bolts. Must be minimum 1.25 inch O.D
tubing. .065 wall thickness on front. .095 wall thickness on rear.
Two-bar front bumpers must be mounted frame-end to frame-end no
wider than width of material outside frame horns and with bottom
loop parallel to ground. Top bar must be directly above bottom
bar, minimum 6.5 inches apart, measured center to center. Rear
bumper and nerf bars can be no wider than tires.
FRONT SUSPENSION:
All components must be steel, unaltered OEM, in OEM location,
and replaceable by OEM parts, except tube-type upper A-frames
with aluminum/steel cross shaft, and mounts can be moved. OEM
replacement lower A-frames. Lower A-frames must be right and left
and of same design; rubber, nylon or steel lower A-frame bushings,
no offset or bearing type, welded or bolted shock mount on lower
A-frame. Lower A-frame mounts and bolt holes on frame must be
in OEM location. Lower A-frame may be tube type.
REAR SUSPENSION:
All components must be steel. No covers allowed. All trailing
arms/link bars must be solid tubing. Rear of frame may be altered
to accept leaf or coil springs. Steel coil-over eliminators or
steel/aluminum coil-over kits allowed. Must conform to shock and
spring rules. One mechanical traction bar (pull or lift, not both).
STEERING:
All components must be steel, unaltered OEM, in OEM location,
except outer tie rod end and adjustment sleeve may be replaced
by a minimum .625 inch steel rod end and steel tube; spindles
can be ground for brake caliper clearance only. Unaltered OEM
replacement Pinto spindles, raised case, spindles must be right
and left and of same design. Bolt on spindle savers allowed. Steel
steering shafts and knuckles only. Steering quickener, steering
wheel and quick release may be aluminum. Cockpit steering may
be modified, must be kept on left side. No rack and pinion.
SHOCKS:
One steel unaltered shock per wheel. One additional shock allowed
on rear suspension. No threaded body, front coil-over, air, or
remote reservoir shocks. No schrader valves.
SPRINGS:
Steel only. One coil and/or leaf spring per wheel only. One additional
spring allowed on pull bar or lift bar, may be progressive. Any
coil spring. No torsion bars or air bags.
TIRES AND WHEELS:
Any 8” steel wheel. American racer, Hoosier IMCA spec
tire or 8 inch take-off allowed. Tires may be grooved or siped.
SAFETY:
1. Fire suits, gloves, and neck collars must be worn at all times
during racing. SA rated Snell 2000 or better helmets are mandatory.
2. All cars will be equipped with a full size 16 x 20 window net.
Window net must be in use at all times.
3. A 3” safety belt and shoulder harness with 2 belts over
shoulder, and a quick release type are required. Must have minimum
of one submarine strap. All belts must be securely fastened to
frame or cage. Belts must be replaced every four years beginning
with belts dated 2000. Date tag or stamp required.
4. With driver strapped in car minimum 2” head clearance
required from top of driver’s head is mandatory.
5. Two throttle return springs and a steel toe strap on throttle
is mandatory.
6. An onboard fire extinguisher is mandatory.
7. Shock resistant roll cage padding on all bars that the driver’s
head, legs, and arms may come in contact with while strapped in
seat is required. A padded, functional headrest in line with the
center of the driver’s head is mandatory.
ROLL CAGE:
Must consist of continuous hoops. Minimum 1.75 inch O.D tubing
with a minimum wall thickness of .095 inch for main cage. Frame
mounted in at least six places (low carbon or mild steel recommended).
Must consist of a configuration of front, rear and top hoops connected
by tubing on sides or side hoops. Driver’s head must not
protrude outside cage with helmet on. Roll cage must be securely
supported and braced with minimum one cross bar in top halo. Foot
protection bar required. Main cage no further forward than rear
of engine. All bars forward of cage must be lower than hood.
FUEL:
Gasoline or alcohol. No performance enhancing additives. Upper
cylinder lube allowed. Fuel sample may be taken from any car at
any time.
FUEL SYSTEM:
Racing fuel cell required, maximum 32-gallon capacity. Must be
in minimum 18 gauge steel container. Cell must be securely mounted
behind rear axle, between tires, minimum of four inches ahead
of bumper, minimum of ten inches above ground. Must mount with
minimum two, .125 inch thick steel straps, two inches wide around
entire cell. All cell mounts must be steel, securely welded to
frame/cage. Protective tubing must cover rear and extend past
both sides of cell. No part of cell shall be lower than protective
tubing. Fuel cell vents, including cap, must have check valves.
Pick-up must be on top or right side of cell. Limit one fuel filter.
No cool caps. One naturally aspirated 2 or 4 barrel carburetor
only. No adjustable carb spacers.
ASPIRATION:
One two-barrel or one four-barrel carburetor. Must be naturally
aspirated. No fuel injection. No electric fuel pumps.
RADIATORS:
Radiator must be mounted in front of engine. Cooling system may
be modified.
TRANSMISSION/DRIVE SHAFT:
Must have at least one gear forward and one reverse, plus a neutral
position. With motor running and car in still position, driver
must be able to engage car in gear and move forward, then backward.
Layne, Ernie Glide, Bert and Brimm transmissions will be allowed
as well as any OEM transmission. No five speed transmission, “in
or out” boxes, or quick change devices allowed. Functioning
shift levers must be in stock location or manufactured after 1995.
All manual gear type transmissions must have a working disc-type
or approved cone-type clutch inside explosion proof steel bell
housing. Automatic transmissions must remain in OEM stock appearing
automatic case. Original bell housing must remain. Must have an
approved scatter shield or blanket. Scatter shield may be constructed
of 25-inch by three-inch steel, 270 degrees around flex plate
or flywheel.
AGE REQUIREMENT:
At his sole discretion, the Race Track Promoter has the authority
to permit/or not permit a driver 16 years or younger to participate
in any class.
NUMBERS:
All cars must be numbered with large legible numbers on both sides,
on top and rear panel. Numbers on sides and top of car must be
in contrasting color from body, be at least four inches thick
and at least 20 inches high. Sponsor’s names must not interfere
with car numbers and must be neatly lettered.
REAR END:
Any steel approved OEM passenger car or truck rear end allowed.
Safety hubs (floater) allowed. All components must be steel except
lowering blocks, cap and drive flange. Full steel spool, steel
mini spool or welded rear ends only. Steel axles only. Quick change
devices are legal. One piece drive flange only. No torque dividing
differentials. No scalloped ring gears.
BRAKES:
Must be steel approved OEM, operative four wheel, drum or disc.
Must maintain OEM dimensions for hubs/rotors and calipers, cannot
be lightened. Bolt pattern maybe changed. Larger studs allowed.
Rear rotors may be after market, minimum 0.810 inch thickness.
Vented rotors only. No brake shut-off or pressure sensitive devices.
One proportioning device allowed, front to rear only. Brake lines
must be visible.
BATTERY/STARTER:
One battery only. Must be shielded and securely mounted between
frame rails. Must have capability of starting without being pushed
or pulled. Must leave initial staging area on demand, unaided
or go to rear of that race.
EXHAUST:
Round tube headers only. All primary header tubes must enter
directly into one collector at same point at end of header and
point rearward.
GAUGES/ELECTRONICS:
No transmitting or listening devices, timing retard controls,
or digital gauges (including tach). No electronic monitoring computer
devices capable of storing or transmitting information except
analog tach. No adjustable ignition control boxes. Only one 12
volt ignition box allowed, must be out of driver’s reach.
No additional ignition accessories allowed. Only change allowed
to ignition box is one high-end rev-limiter setting. This setting
can be changed through one chip only, or an internal setting inside
box. No electronic traction control devices.
LOOSE OBJECTS:
Weights must not be used in driver’s compartment or outside
of the body or hood area. Any weights added to other areas of
vehicle must be securely mounted and must be painted white and
have the car number on it, and attached with at least two .5 inch
bolts.
ENGINE COMPARTMENT:
Rear of engine (bell housing flange) must be mounted at least
72 inches forward from centerline of rear axle. Engine offset
must be kept within 2 inches of centerline of front cross member
with engine level. Minimum 11 inch engine height from ground to
center of crankshaft
ENGINE SPECIFICATIONS:
Any American make engine allowed. Steel heads, block and oil
pan only. Aluminum heads are legal as long as there is 40 lbs.
of weight in front of the mid-plate.
All engines must be able to be used in conventional passenger
car without alteration. Engine mounts cannot be removed or altered.
Castings and fittings must not be changed. No machine work on
outside of engine. “Wet” oiling system only.
If you have any questions call Mark Brill 405-769-6927. DON’T
GUESS !!
IF IS DOESN’T SAY YOU CAN DO IT IN THE RULES…YOU
CAN’T !! |
