2004
Indy Speedrome Supermodifieds

Effective Nov. 1, 2003

1. GENERAL

A. 2004 Indianapolis Speedrome Rules of Competition apply to Modified series
B. Season pit locations can be purchased
C. Racing gasoline is recommended and available at the Speedrome

2. GENERAL

A. Brakes must operate on all 4 wheels. No brake shut-off devices allowed.
B. Racing fuel cells require and must be mounted by at least two solid steel straps 2" wide around cell. Fuel cells must be enclosed in a metal container. All cars are to have a fuel cell protector mounted under the rear bumper. Fuel cells must have check valves and bladder with a top pick up.
C. Fuel must be gasoline
D. Batteries must be securely mounted and shielded.
E. Loose objects and or weights must not be used in driver's compartment or outside of the body.
F. No rack and pinion steering allowed. Steering box must be OEM and remain within original bolt pattern for type of frame used.
G. No aluminum wheels, hubs, calipers or any other suspension parts allowed. Brake calipers must be OEM and not lightened. Rotors can't be drilled or lightened.
H. SFI approved full fire suits and gloves with Snell "95" racing helmets are required for driver.
I. Five point safety belts are required. Seat belts shall not be more than 3 years old.
J. Padding required for driver protection on roll cage area.
K. Tires, all cars must race the Speedrome Spec tire. No soaking or treating due to environmental reasons.
L. Only 8" steel wheels allowed.
M. Drive shaft loop required and shall be constructed of at least ¼" X 2" steel material and be a 360-degree type.
N. Quick-change rear ends allowed.
O. Stock front clip required. Stock Front Bumper required.
P. Stock lower a-frames required.
Q. Factory production complete 1960 or newer parallel American passenger car frames only.
R. One shock per wheel only.
S. Minimum wheelbase, 108" both sides. Maximum overall width (front or rear) shall not exceed 78" outside of tread to outside of tread. No front clips or fiberglass suspension parts.
T. Firewall and floorboards mandatory.
U. One 2 or 4 barrel carburetor may be used, and must be naturally aspirated. No fuel injection, electric fuel pumps, or Magnetos
V. All cars are required to run a mufflers on both right and left side header pipes. The right side muffler exit must be behind the existing body panels to mitigate exhaust noise/echo bouncing off track wall.
W. Chief Steward may adjust the rules at anytime to allow a touring series car to race with our regular cars to encourage participation.

2004 Supermodified Wing Spec's

2004 Speedrome Modifieds can utilize a roof wing during the season as follows:

1. Wing construction must be aluminum and or lexan. No Plexiglas allowed.
2. Wing installation on roof whereas leading edge is no farther forward than upper roll cage roof bar. Must retain front windshield and door opening design.
3. Wing construction must be 5' X 5' OR LESS (25 sq. ft). Wings limited to overall height limit of 96" or less. Wing plane angle will be limited to a 30" max horizontal slope from trailing edge to leading edge. Speedrome reserves the right to establish uniform wing degree angle for competitive reasons.
4. Wing sideboards (winglets) be constructed of aluminum and or lexan. No Plexiglas.
5. Wing sideboards (winglets) can be 5' X 30" or less.
6. Wing sideboards (winglets) are limited to 3" under hang and 27" above cord line. Most construction on a foil that has upward slope will require this under hang be shaped in the same form of the foil.
7. Wing mounting will require hinged front and safety pinned rear mounts of the wing proper. Wing must be mounted in a way that can be tilted for ease of driver extrication if necessary.
8. Wing mounting will require the use of solid mounting panels rather than rods when used on cars without normal modified roof panels.
9. Wing mounting for cars with normal roof panels can utilize rod mounts as long as the rods are mounted to the exterior of the roof and coupled with solid metal bases. No rods thru roof proper.
10. Modifieds with roof-mounted wings are still required to have the Speedrome car numbers on the door panels.

Due to various interpretations and construction designs, the Speedrome reserves all rights to require changes that better preserve safety issues on wing configurations.

All cars are subject to inspection and or changes that might be required of the Chief Steward.

Modified Series include: Practice, Qualifications, Trophy Dash, Heats and a Feature.

2004 SPEEDROME MODIFIEDS RULES