| BODY COMPONENTS:
1. The definition of an upright car is a conventional front-mount
engine in which the vertical position is to be maintained as closely
as possible, with a maximum half-inch offset. The driver shall
be seated directly behind the engine, the fuel tank must be behind
the driver and the radiator must be positioned in front of the
engine. The driver cannot be located beside the drive shaft. Side
lips on hoods cannot exceed 2 ½ inches. Nerf bars cannot
be attached to the car in more than three places, no gussets.
May not exceed .120 wall thickness and no larger than 1 inch O.D.
Maximum width; 36” left, 42” right, measured from
center of driveline.
2. Wheel base, minimum 84 inches, maximum 102 inches, measured
from center of the front hub to the center of the rear hub.
3. Minimum weight, including driver 1,500 pounds. Cars may be
weigh at any time. Fluids used or parts lost during a race may
no be added to make weight. No tolerance. Add-on weights must
be bolted with a minimum of two 3/8” bolts and double nutted
and/or weight clamps. They must also be painted white with car
number present.
TIRES & WHEELS:
1. Right rear tire American Racer 102/16.0-15 medium or hard
or a Hoosier RC3. All tires must durometer within 5 points of
factory specs.
2. Insert type, foam rubber wheel cover or covers that are securely
fastened to the wheels are the only style wheel cover that are
acceptable.
3. Wheel type optional. Bead locks optional. Left rear wheel and
tire can be no wider than 18 ½’ cross-section; this
will be measured using a hoop.
SAFETY:
1. All cars subject to inspection at any time and must be free
of mechanical defects and be in safe racing condition.
2. Full face racing helmets meeting Snell 2000 standard required
and must be worn at all times the car is on the track and accompany
vehicle at time of inspection.
3. Bucket seats are mandatory and must be factory manufactured.
Only approved seat installation and seat structure accepted. Seat
must be properly installed, and seat backrest cannot be moved
back farther than the roll cage rear main hoop. No car will be
permitted in competition unless seat is properly installed.
4. Fire suits, shoes, gloves, and neck collars are mandatory and
must be worn at all times during racing.
5. A 3” wide safety belt and shoulder harness with 2 belts
over shoulders, and of a quick-release type are required.
6. Shock-resistant roll cage padding on all bars that driver’s
head, legs and arms may contact with while strapped in seat is
required. A padded, functional headrest in line with the center
of the driver’s head is mandatory. Right side head restraint
is mandatory.
7. Two throttle return springs and a steel toe strap on throttle
is mandatory.
8. Front rock screen from top of hood to top of front halo and
from roll bar to roll bar is required. Maximum 2”x 4”
openings.
9. There must be a 2” minimum clearance between driver’s
head (with helmet) and top of roll cage (without padding). Loops
may be used and must be constructed of the same tubing requirements
as frame. These must be added in a safe manner.
ROLL CAGE/CHASSIS:
Chassis and roll cage must be constructed of steel channel or
tubing of a 1 3/8 inch minimum outside diameter by .095-inch wall
thickness for the main rails and cage.
FUEL:
Alcohol (methanol) or gasoline allowed. NO additives of any
type.
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:
Only two digit numbers may be used. No three digit numbers will
be accepted. No letters or symbols with numbers. No duplicate
numbers. Paint numbers in contrasting colors on both sides of
tail and on nose. No Mylar or reflective type material may be
used. Numbers must be a minimum of 9” tall. Make numbers
BIG, not fancy and kept clean for scorers.
FUEL PUMP:
1. Fuel pump type is optional. No pressurized fuel system.
2. FULL CELL WITH BLADDER is mandatory. A fuel shutoff valve within
easy reach of the driver required. No vinyl or plastic fuel lines
allowed. Fuel cell must be securely mounted. No car can start
a race with than 40 gallons of fuel.
CARBURETOR:
One (1) two(2) barrel Holley carburetor not to exceed 500 cfm.
No solenoid. Carburetor will be checked using a GO-NO-GO gauge.
Carburetor venturibore, throttle plate bore, throttle shaft diameter,
and booster size will be checked using GO-NO-GO gauges. Measurements
are as follows: Venturibore max 1.390”, throttle plate bore
max. 1.700”, throttle shaft diameter min. .180”, booster
height size min. . 435”, booster size interior max of .385”,
exterior booster max. .6600”. The use of fuel injection,
supercharger, turbo charger, nitrous oxide or water injection
will not be allowed.
DRIVELINES:
All drivelines must be broken in the coupler or rear slider.
Torque arm drivelines may not be used. All drivelines must be
enclosed and contain no more than one U-joint or CV-joint and
that one must be at the front of the driveline.
IGNITION:
Any ignition mechanically driver in stock location.
INTAKE MANIFOLD:
OEM or stock-type cast aluminum allowed. May be ported only to
match heads. One 1 ¾ (maximum) spacer or adapter may be
used between carburetor and intake manifold. No welding, grinding,
cutting, porting, polishing anywhere on intake EXCEPT for one
inch maximum inside intake runners to match heads.
MUFFLER:
None required.
SHOCKS:
1. No adjustable shocks that can be controlled from inside the
car.
2. NO TRACTION DEVICES!!
WINGS:
Wings maximum size shall be 16 sq. ft. on the top horizontal
section, 60” maximum width. The maximum size of vertical
side panels shall be no more than 10 sq. ft., including the lip
on the top and bottom of side panels. No flaps or rudders may
be attached to sideboards or center section. Wicker bill on the
top lip of the center section can be no more than a 1” MAX.
Wing cannot exceed 2 ½” drop in belly of wing. The
maximum size of the nose wing shall be 2 ft. by 3 ft. NO wicker
bill of any sort will be allowed on the nose wing. No hydraulic
mechanical or electrical device may be used that will enable the
driver to adjust the wing from inside the car while driving the
car. Nerf bars may not be covered so as to give the effect of
a wing.
ENGINE:
1. Any V-8 cast iron automotive engine block. No aluminum.
2. Maximum displacement 368 CI.
3. Domed pistons not allowed. Flat top pistons or stock type dished
pistons only.
4. Any steel rod or crankshaft may be used. No titanium engine
parts will be allowed, except valve spring retainers.
5. Camshaft is optional, but NO overhead camshaft.
6. Only pan type oil pumps allowed. Dry sump or external pumps
are prohibited.
7. Oil pan style is optional. A one-inch diameter inspection hole
in the upper side of pan about oil line and windage tray is recommended.
If car is inspected and pan has no inspection hole, pan must be
pulled at track.
8. All valves and plug holes must remain in stock location.
9. Automatic cam timing devices are prohibited.
10. Water pumps are limited to stock mount, belt driven type.
11. Brodix spec head or any cast iron cylinder head that is manufactured
by the manufacture of engine used. No after market heads such
as Dart, etc may be used. Cast iron heads may be ported and polished.
Valve angles are to remain as manufactured. NO moving or offsetting
of dowels in block or head. Combustion chamber can be reshaped.
NO coating of the intake or exhaust runners. Coating of valves
and combustion chamber is OK.
ALUMINUM SPEC HEAD RULE:
1. All spec heads will be supplied with CNC bowl blend and intake
matching.
2. No grinding or blending of CNC work is allowed.
3. No grinding or polishing of any kind is allowed anywhere on
the casting.
4. No use of any substance that may change or alter the shape
or size of ports or combustion chambers is allowed.
5. Valve seats and guides are to remain as manufactured and in
their cast position, valve must stay on valve seat and cannot
touch aluminum.
6. Valve angles are to remain as manufactured. The original seat
center locations as provided by the head manufacturer may not
be altered.
7. No tapering or reshaping of valve guides will be allowed.
8. No minimum combustion chamber volume.
9. Spec cylinder head serial number must remain on the head and
may no be defaced or altered.
10. No welding modifications are allowed to the original castings.
Brodix will provide a repair service where we register and keep
track of repairs if you desire. (Chevrolet part number SP CH OKC)
(Mopar part number SP MO OKC) (Ford part number (SP FD OKC).
11. Valve stem may be no smaller that 11/32.
If you have any questions call Mark Brill at 405-769-6927. Don’t
Guess!!
IF IT DOESN’T SAY YOU CAN DO IT IN THE RULES…YOU
CAN’T!! |
