2025 6,200 Pro Street 4x4 Rules
1. Maximum weight is 6,200.
2. Maximum wheelbase is 133 inches except any regular cab light duty truck with a OEM wheelbase.
3. Maximum drive train is 1 ton.
4. Vehicle body shall appear stock. After market body panels and forward tilt front clip are allowed. No funny car style piece tilt body allowed. Vehicle shall have complete fire wall.
5. Vehicle shall have OEM frame and drive train. No pro fabs allowed.
6. Front weight brackets, fuel tanks and batteries are allowed with a Maximum 60" forward of the front axle center line.
7. Rockwell 106 rear end allowed.
8. Engine shall be in stock location or rear of engine. Block no less than 14" rearward of front axle center line.
9. Tires shall be DOT approved. No alterations, no dual wheels, no chains or studs and no bar tires.
10. Maximum tire size not to exceed 33" x 12.00" or 33" Tread to Tread measurement.
HITCH
11. Maximum hitch height is 26 inches.
12. Hitch shall have a minimum 3 1/2" x 3" diameter opening to accept the sled chain hook.
13. Hitch shall have a maximum 1.5 inch of material beyond the hook point.
14. Hitch shall be rigid in all directions.
15. No part of the vehicle or hitch shall interfere with the sled being chain or hook.
16. Hitch area shall be free of all obstructions of a minimum 6" wide x 12" immediately above hook point.
17. No portion of hitch can be greater than 25 degrees or less than 0 degrees and must be straight plane from hitch point to hook point.
ENGINE
18. Maximum cubic inch displacement is 473 CID with a 1% tolerance.
19. Engine shall be equipped with any cast iron engine block.
20. Engine shall be equipped with any cast iron cylinder heads retaining OEM intake port location and bolt pattern. Aluminum cylinder heads with a OEM pattern. No SR20, P5l, A460 and EX514
21. OEM Value Angle no spread port.
22. Engine shall be equipped with a single carburetor.
23. No after market forced air induction allowed. (turbo charger, blower, centrifugal supercharger)
24. No tunnel ram intake and No sheet metal intake.
25. Open headers are allowed. Vertical headers required for vehicles burning alcohol.
26. No nitro-methane, propylene and nitrous oxide allowed.
27. OEM intake port spacing and OEM intake must be bolted onto heads while bolted to the motor.
28. $750.00 to protest motor.
SAFETY
29. Vehicle shall meet all general safety rules.
30. REQUIRED: Fire extinguisher in the vehicle.
31. REQUIRED: Kill switch.
32. REQUIRED: U joint and drive shaft shielding loops. Minimum of 1/4 inch steel or 5/16 inch aluminum.
33. REQUIRED: A SFI certified steel bell housing around flywheel and clutch and no cast bell housing allowed.
34. REQUIRED: A SFI certified scatter blanket or shielding around torque converter and transmission.
35. REQUIRED: A SFI certified steel flywheel and clutch.
36. REQUIRED: A SFI certified harmonic balancer or 360 degree shrouding of a balancer with 1/4 inch steel. Required for vehicles with enging exceeding 6,500 RPM.
37. REQUIRED: Approved fire suit and helmet. Neck Brace is optional.
38. Vehicle from another association or new competitor competing in Pro Street is allowed a one event grace hook and shall adhere to all safety rules before second event with IFPA.
39. Rules are locked for 2 years / 2027 unless a change is requested.
1. Maximum weight is 6,200.
2. Maximum wheelbase is 133 inches except any regular cab light duty truck with a OEM wheelbase.
3. Maximum drive train is 1 ton.
4. Vehicle body shall appear stock. After market body panels and forward tilt front clip are allowed. No funny car style piece tilt body allowed. Vehicle shall have complete fire wall.
5. Vehicle shall have OEM frame and drive train. No pro fabs allowed.
6. Front weight brackets, fuel tanks and batteries are allowed with a Maximum 60" forward of the front axle center line.
7. Rockwell 106 rear end allowed.
8. Engine shall be in stock location or rear of engine. Block no less than 14" rearward of front axle center line.
9. Tires shall be DOT approved. No alterations, no dual wheels, no chains or studs and no bar tires.
10. Maximum tire size not to exceed 33" x 12.00" or 33" Tread to Tread measurement.
HITCH
11. Maximum hitch height is 26 inches.
12. Hitch shall have a minimum 3 1/2" x 3" diameter opening to accept the sled chain hook.
13. Hitch shall have a maximum 1.5 inch of material beyond the hook point.
14. Hitch shall be rigid in all directions.
15. No part of the vehicle or hitch shall interfere with the sled being chain or hook.
16. Hitch area shall be free of all obstructions of a minimum 6" wide x 12" immediately above hook point.
17. No portion of hitch can be greater than 25 degrees or less than 0 degrees and must be straight plane from hitch point to hook point.
ENGINE
18. Maximum cubic inch displacement is 473 CID with a 1% tolerance.
19. Engine shall be equipped with any cast iron engine block.
20. Engine shall be equipped with any cast iron cylinder heads retaining OEM intake port location and bolt pattern. Aluminum cylinder heads with a OEM pattern. No SR20, P5l, A460 and EX514
21. OEM Value Angle no spread port.
22. Engine shall be equipped with a single carburetor.
23. No after market forced air induction allowed. (turbo charger, blower, centrifugal supercharger)
24. No tunnel ram intake and No sheet metal intake.
25. Open headers are allowed. Vertical headers required for vehicles burning alcohol.
26. No nitro-methane, propylene and nitrous oxide allowed.
27. OEM intake port spacing and OEM intake must be bolted onto heads while bolted to the motor.
28. $750.00 to protest motor.
SAFETY
29. Vehicle shall meet all general safety rules.
30. REQUIRED: Fire extinguisher in the vehicle.
31. REQUIRED: Kill switch.
32. REQUIRED: U joint and drive shaft shielding loops. Minimum of 1/4 inch steel or 5/16 inch aluminum.
33. REQUIRED: A SFI certified steel bell housing around flywheel and clutch and no cast bell housing allowed.
34. REQUIRED: A SFI certified scatter blanket or shielding around torque converter and transmission.
35. REQUIRED: A SFI certified steel flywheel and clutch.
36. REQUIRED: A SFI certified harmonic balancer or 360 degree shrouding of a balancer with 1/4 inch steel. Required for vehicles with enging exceeding 6,500 RPM.
37. REQUIRED: Approved fire suit and helmet. Neck Brace is optional.
38. Vehicle from another association or new competitor competing in Pro Street is allowed a one event grace hook and shall adhere to all safety rules before second event with IFPA.
39. Rules are locked for 2 years / 2027 unless a change is requested.