7/21/2025
Tulsa Speedway
Effective Immediately: Tulsa Speedway Factory Stock Rules
Attention in the Pits! Attention in the Pits!!
USRA Stock Car Racers
When racing Factory Stock at Tulsa Speedway, you must adhere to the 2-barrel rule for Factory Stock
7.3.1 Only an unaltered cast or aluminum Holley 4412 two-barrel is permitted. Ultra XP or HP carburetors are not allowed. Screw-in air bleeds are permitted. Powder coating and/or any modifications are not allowed. Choke plate may be removed. Link to USRA Rulebook for Factory Stock
This is Effective Immediately (7/21/2025)
Next Factory Stock race is Friday August 1st.
Submitted By: Michael Narx
