Rules
LATE MODELS
2025 Peoria Speedway Late Model Rules
Please see UMP Dirtcar Super Late Model Rules with the following exceptions:
DIRTcar Late Model – DIRTcar Rules
604 GM or 602 GM Crate Engine Weight Break (2250 LBS)
Right Front, Left Front & Left Rear Tires: Hoosier LM 20,30,40 or 2,3,4 on three corners – (Grooving & Siping Allowed)
Hoosier LM 30,40 or 3,4 on RR – (Grooving & Siping Allowed)
MODIFIEDS
Please click the DIRTcar Modified – DIRTcar Rules
B MODIFIEDS
Please refer to the the DirtCar UMP Modified
with the exceptions of the Following Rules:
- Minimum weight 2450 pounds
- 602 Sealed GM Crate Motor, or 360 cubic inch or less steel headed engine with a 2 barrel carb Unaltered 4412 to be gauged top and bottom on request and the choke horn still in place.
***Note the open engine package is open to same claim rules as 602 Engine***
- $6,500 engine claim rule ($50 Tow Truck Fee applies)
- Steel Body Shocks ONLY. No adjustables, No Schrader valves, No remote canisters.
- $120 shock claim rule or $60 exchange.
- Peoria Speedway reserves the right to claim any engine or shocks as necessary.
- Flat Tappet Cams no Roller Cams.
- 5 inch Spoilers are allowed.
This is Peoria Speedway’s attempt to lower the cost of competition in the B Modified class.
Track Reserves the right to claim engines or shocks as deemed necessary.
UMP STOCK CARS
DIRTcar Stock Car – DIRTcar Rules
HORNETS
Please refer to the the DirtCar UMP Hornet Rules below
Hornets may run any DOT Tire
https://dirtcar.com/wp-content/uploads/2017/12/2018DIRTcarSportCompactRules-1.pdf