Late Model Dirt Modified
Motors
- Only the Slick 7 Mini-Brute motor is allowed.
- Motor may be ground at the rear to provide rear axle clearance.
- No other Modifications are allowed.
Chassis:
- Only mass-produced 4 1/2 inch “Flexi” style chassis are allowed.
- Pin tubes may be added and chassis may be braced.
- Only bushings are allowed – no ball bearings.
- Pan movement may be increase or restricted.
- Lead weight may be added.
- Front axles must be installed and be a minimum diameter of 3/32 inch.
- Lightweight pans allowed.
- Front wheels must be at least .675 inch in diameter, 0.400 inch in width, and be composed black rubber only.
- Rear axle vertical location may be changed.
- Rear tire width may not exceed 0.810 inches.
- Vertical Motor Mount may be trimmed and/or removed.
- Lead weight may be added.
- No other modifications allowed.
Clearance:
- Car must have 0.032 inches clearance as measured at the rear axle including gear.
Bodies:
- Only the following 4.5” Late Model Dirt Modified bodies are allowed:
- Chevy, 6243A
- Ford 6244A
- Pontiac 6245A
- Body must be cut along the manufactures cut line and the rear of the body may be completely cut out.
