Pro Street Rules

Published 1/24/15

2015 Rules Changes Highlighted in Yellow

Please also read the ORP General Rules which apply to all races conducted at Ozark. For Non-ORP races, the sanctioning body rules of the track the event is being held at apply.

Engine & Drivetrain:

Any power adder acceptable.
Must run a collector style header. (no zoomies)
Any motor combination acceptable.
Engine diaper for oil containment is required.

Weight Requirements:

Base Weight 2800

Deduct 200 lbs for Nitrous Oxide
Deduct 200 lbs for Small Blocks
Deduct 400 lbs for Naturally Aspirated
Add 200 lbs. for Twins, Screws, and 5″ and bigger bore space blocks

These weight breaks are to be compounded or added together.(i.e. A naturally aspirated small block gets a 200 lb break for being a small block plus a 400lb break for being naturally aspirated meaning it can run at 2200 lbs.

More examples -4.84 Bore Space Big Block Chevy on Nitrous 2600 lbs.

Twin Turbo Small Block 2800 lbs.

Twin Turbo Big Block 3000 lbs.

5″+ bore space Big Block with Screw Blower 3000 lbs.

Body & Suspension:

Funny car or one piece bodies not allowed even if equipped with doors.
Maximum front end overhang of 45” as measured from centerline of front spindle.
An approved extension may be used to reach 45” if the front end overhang of the body is less than 45”.
Doors required! Doors must be functional and able to be opened from both the inside and outside of the vehicle.