2003 B-Modified Rules and
ROLL CAGES Must consist of continuous hoops not less than 1.666" diameter
and must have a wall thickness of at least .095. Must be frame mounted in at
least six places. Body mounted roll cages are not acceptable Must consist of a
configuration of front and rear hoops connected by tubing on the side or hoops
in a manner deemed acceptable by the Tech Inspector. Driver's head must not
protrude above cage with helmet on and strapped in the driver's seat. Roll cage
must be securely supported and braced. Low carbon, Mild steel tubing is
recommended. Other materials are subject to prior approval. No iron pipe or
square tubing allowed. No brazing or soldering allowed. No brace bars forward of
cage may be higher than stock hood height. Protection of feet is mandatory. Bar
across back of engine with vertical bars and rub rails or similar protection to
meet requirements of the Tech Inspector. Fire proof roll bar padding within
reach of driver.
DRIVER DOOR BARS Must be as parallel with the ground as possible and
located perpendicular to the driver so as to provide maximum protection for
driver without causing undue difficulty in getting into or out of vehicle. The
sidebars must be welded to the front and the rear of the roll cage members.
Should have 4 bars at least .095 thickness by 1 ½" diameter.
SAFETY, SEAT BELTS, SEATS, HELMETS, AND WINDOW NETS: All seats must be
made of aluminum or steel and approved by Officials. All seats will be required
to be mounted to the frame or the roll cage of the car. All cars will be
required to be equipped with a minimum 5-point harness. All belts will be
required to be mounted to the frame of the car or to the roll cage. Helmets
should be of full-face shield type and are subject to inspection. All cars will
be required to use a full size window net in the driver's door at all times.
Fire resistant shoes & gloves recommended. Full size Window nets required.
FIRE SUITS Flame retardant nature must be worn by all competitors.
Two-piece fire suits are allowed
EXHAUST SYSTEM Must be mounted in such a way as to direct spent gases
away from cockpit of vehicle and away from areas of possible fuel spillage.
Mufflers required at all times.
WEIGHTS Must be painted white and have car number on them. They must be
securely fastened with 7/16 " or larger bolts. No weights allowed in drivers
compartment or on rear bumper or attached to fuel cell brackets.
FUEL CELLS An approved manufactured fuel cell with a maximum capacity of
32 gallons. Fuel cell will be required to be encased in a metal container. All
fuel cells must be equipped with a rollover valve in the vent fitting and in the
fuel fill. Fuel cells must be required to have pick up location on top of cell.
It is highly recommended that all fuel cells be equipped with foam. Fuel cell
will be required to be mounted to frame of car. Fuel cell will be required to be
secured with straps or tubing around it. Fuel cell cannot hang below the bottom
of the rear end tubes with the car sitting at ride height. All cars will be
required to be equipped with a fuel cell guard that is mounted separately from
the fuel cell and comes to the bottom of the fuel cell. Minimum 1 ½ " tubing
must be used for fuel guard.
BATTERIES Must be securely mounted and shielded. Batteries mounted inside
vehicle must be in marine type cases.
FUEL: Gasoline only. NO NITROUS OXIDE. No additives of any kind.
TIRES: Hoosier Super Chain Link 26.5 or 27.5/ 8.0-15 SCL, G 60 American
Racer mounted on a steel wheel with a maximum width of 8". Bead locking devises
allowed on right rear only. Only foam wheel covers or beadlock / mudplug
combinations will be permitted. No grooving siping or softening of the tire
allowed. "A" Hardness required on all
FRAMES: May not be widened or narrowed and must be able to support roll
cage on both sides. Must be full and complete on both sides. Cross members may
be notched for radiator clearance only. Minimum frame height and body height
from ground is 4". Front suspension must be replaceable by stock part from same
type suspension. Stock passenger car spindles only; NO fabricated spindles.
Bottom A-frame cannot be altered or moved. Tube type upper "A" frames allowed
and can be moved.
NO coil over shocks allowed either front or rear. NO coil covers used anywhere
in or on car.
NO Jeep, Bronco, ECT. or 4 wheel drive frames allowed. NO sports car frames
Rear of frame may be altered to accept leaf or coil springs; any coil springs
must be at least 4 ½" outside diameter. NO fiberglass leaf springs allowed. NO
torsion bars allowed in rear. One shock per wheel only. Additional shocks in
other locations permissible. Any shock on car may be claimed for $50.
Minimum wheelbase, 108", both sides- NO TOLERANCE. NO front clips or tube type
NO aluminum or fiberglass suspension or rearend parts allowed. NO aluminum drive
BODIES Must use steel or fiberglass full size roof. Must be stock
appearing. Stock appearing front windshield and rear window support unit
(painted roll bars not acceptable substitute.) Full firewall and floorboards are
mandatory. All body parts must be recognized as factory production vehicle. No
extended edges anywhere. All corners and edges must be clean. Fiberglass or
metal duplicates of body parts are permitted. Handmade body parts may be
constructed of steel, aluminum or fiberglass but must be recognized as factory
production vehicle. NO "slab" bodies. All cars in competition must have a
complete paint job. Unpainted aluminum bodies are not acceptable. Must have a
minimum 6" number on front of car. All cars must be numbered with large legible
numbers on both doors, on top and rear panel. Letters on doors of car should be
in contrasting color from body, be at least 4" thick and at least 20" high. Top
numbers should be at least 4" thick and at least 30" high. Sponsors' names must
not interfere with car numbers and must be neatly lettered. Original roofline of
vehicle must be maintained with a maximum of 1" drop rear to front. NO wings,
spoilers or any other ground effects are allowed anywhere outside or inside of
car. A rear deck lid spoiler will be allowed maximum height of 3". Total height
from ground to top of spoiler not to exceed 38". Engine compartment will remain
open, NO side panels; hood sides may have maximum 4" drop; bodies should extend
no further forward than back of block. Rear body panel to be a solid panel at
least 8" high and include car number. Driver and passenger door window must have
at least a 12" vertical opening. The rear roof posts must extend to the quarter
panels, left and right side. Left and right side rear roof panels must be the
same length and design. The roof panels will be a maximum height at the rear not
to exceed 3". Rear spoiler braces must not exceed 3" in height. A minimum
distance of 59 inches and a maximum distance of 64 inches will be permitted
between the outer edges of the quarter panels measured at the rear bumper
TRANSMISSIONS Multi disc clutch or direct drive automatic. No Bert, Brinn
or Guss Allowed.
Window nets required.
DRIVE SHAFT A loop is required and must be constructed of at least ¼" by
2" steel and must be mounted no more than 6" back from front of drive shaft.
Drive shaft must be painted white.
MIRRORS NOT ALLOWED
ENGINE Must be Iron Block and Heads. No aluminum heads allowed. Must be
an OEM head with factory part numbers visible. No aftermarket heads allowed. Any
intake is allowed, with a maximum of 1 ½" allowed between top of intake and
bottom of carb. One 2- barrel carburetor Holley 4412 (500 cfm) allowed. Must
pass track gauges. Gas Only. No carburetor air dams or devises permitted to
increase the airflow to the carburetor, either inside or outside of the air
cleaner. Any flat tappet cam, No roller cams. Roller rockers permitted. Headers
permitted. No Magnetos. Maximum cubic inch displacement of 364 cid. (See
exception in Weight Limit.)
BUMPERS Bumpers must be used both front and rear. Front bumpers must be
frame end-to frame end with the bottom loop parallel to the ground. Must be made
of minimum 11/4" pipe and must be able to support car if lifted by wrecker. Rear
bumpers, nerf bars and bodies must not extend beyond width of rear tires. Rear
bumpers may be constructed of pipe or flat stock, but must not have any sharp
edges and must protect fuel cell. Center of bumper front or rear 18" from
ground, + - 2".
WEIGHT LIMIT 2450 LBS WITH DRIVER AFTER RACE. Engine size 364 or
above must weight 2750 LBS with driver after race.
REAR END Any passenger car type or truck rear end may be used; NO
aluminum allowed. Aluminum lowering blocks, axle caps and drive plate allowed.
NO quick-change devices allowed. Solid drive flanges only.
STEERING BOX Steering box must be O.E.M. NO rack and pinion allowed. Must
remain within original bolt pattern for type of frame used. In cockpit steering
may be modified to suit driver's taste, but must be kept on left side of
NO CENTER STEERING.
ALUMINUM PARTS Wheels, hubs, calipers, "A" frames or spindles, or any other
aluminum suspension parts are not allowed. All calipers O.E.M. Plastic wheels
are not allowed. NO aluminum engine blocks. ALL VEHICLES MUST HAVE THE
CAPABILITY OF STARTING WITHOUT BEING PUSHED OR PULLED. NO ON BOARD RADIOS. NO ON
4 CYLINDER ENGINE OPTION Engine must be OEM 2 valves per cylinder, 4 cylinder
engine. No aftermarket aluminum heads, only OEM. No roller camshafts No roller
rockers, overhead cam only. Engine must have OEM crank and rod assembly for make
of motor. No strokers of any kind. No alcohol. 2000 LBS with driver after race.
"THE RULES AND/OR REGULATIONS SET FOURTH HEREIN ARE DESIGNED TO PROVIDE FOR THE
ORDERLY CONDUCT OF RACING EVENTS AND TO ESTABLISH MINIMUM ACCEPTABLE
REQUIREMENTS FOR SUCH EVENTS. THESE RULES SHALL GOVERN THE CONDITION OF ALL
RACING EVENTS. AND, BY PARTICIPATING IN THESE EVENTS, ALL RACING MEMBERS ARE
DEEMED TO HAVE COMPLIED WITH THESE RULES. NO EXPRESSED OR IMPLIED WARRANTY OR
SAFETY SHALL RESULT FROM PUBLICATION OF, OR COMPLIANCE WITH THESE RULES AND/OR
REGULATIONS, THEY ARE INTENDED AS A GUIDE FOR THE CONDUCT OF THE SPORT AND ARE
IN NO WAY A GUARANTEE AGAINST INJURY OR DEATH TO PARTICIPANTS, SPECTATORS, OR
B-Modified Rules and Car Specs.doc Microsoft Word Document