U.S. Street Nationals presented by M&M Transmission
M&M Transmission OUTLAW PRO MOD Presented by Fueltech & PJS RacingÂ
Rules Updated as of January 9th 2023, BMP staff reserves right to adjust rules for parity at any time.
PAYOUT:
$32,000 to Win
$10,000 to Runner-Up
$1,500 to Semi-Finalists
$750 Entry Fee (Car & Driver Only)
CLASS DESIGNATION:
Car number must be on all four sides of the vehicle, class designation of OPM or PM needs to be on driver side and windshield as well.
RACE PROCEDURES:
Pro Modified is run on a .400 professional tree. Entries are qualified by quickest to slowest elapsed time, field is set with a Professional Pairing Ladder, directly out of the Compulink Timing System. 32 Car Qualified Field.
NO DUAL POWER ADDERS PERMITTED
WEIGHTS:
Nitrous Oxide
• 960 Cubic Inch Maximum – 2,400 lbs.
• 900-910 Cubic Inch Maximum – 2,350 lbs.
• Less than 900 Cubic Inch – 2,300 lbs.
Centrifugal Supercharger
• BB Centrifugal Supercharger (No Lock-Up) – 2,600 lbs.
• BB Centrifugal Supercharger (With Lock-Up) – 2,650 lbs.
• SB Centrifugal Supercharger (With Lock-Up) – 2,450 lbs.
• Diesel Centrifugal Supercharger – 2,525 lbs.lbs.
Centrifugal Supercharger
The maximum specification for the compressor wheel tip to tip is limited to 140.99mm inducer diameter. Measurement will be taken at the point where the leading edge of the compressor wheel meets the inlet housing. All air entering the Supercharger must pass through a single inlet opening. Exducer backing plate and blade tip to tip dimensions may not exceed 188.99
(No Centrifugal entry with any gear drive or blower that is not readily available for immediate sale & delivery at least 21 days before race) (No test or prototype of any kind allowed)
Roots Supercharger
• SB Roots Supercharger – 2,350 lbs.
• BB Roots Supercharger  (No Lock-Up, 3 Speed or Less) – 2,475 lbs.
• BB Roots Supercharger  (With Lock-Up) – 2,525 lbs.
Screw Supercharger
• SB Screw Supercharger (Maximum 82% Overdrive) (No Lock-Up) – 2,600 lbs.
• SB Screw Supercharger (Maximum 82% Overdrive) (With Lock-Up) – 2,650 lbs.
• BB Screw Supercharger  (C-Rotor) (Maximum 92% Overdrive) (No Lock-Up) – 2,650 lbs.
• BB Screw Supercharger (C-Rotor) (Maximum 92% Overdrive) (With Lock-Up) – 2,700 lbs.
Turbocharger
• SB Single Turbocharger (118mm, lock-up permitted) – 2,200 lbs.
• BB Single Turbocharger (118mm, lock-up permitted) – 2,350 lbs.
• SB Twin Turbocharger (88mm, lock-up permitted) – 2,300 lbs.
• SB Twin Turbocharger (94mm, lock-up permitted) – 2,325 lbs.
• BB Twin Turbocharger  (88mm, no lock-up) – 2,400 lbs.
• BB Twin Turbocharger (88mm, with lock-up) – 2,450 lbs.
• BB Twin Turbocharger  (94mm, no lock-up) – 2,500 lbs.
• BB Twin Turbocharger (94mm, with lock-up) – 2,550 lbs.
• BB Twin Turbocharger  (98mm, no lock-up) – 2,550 lbs.
• BB Twin Turbocharger  (98mm, with lock-up) – 2,600 lbs.
• BB Twin Turbocharger  (102mm, no lock-up) – 2,600 lbs.
• BB Twin Turbocharger  (102mm, with lock-up) – 2,650 lbs.
• Diesel Twin Turbocharger (88mm, ) – 2,500 lbs.
4 Cyl. / 6 Cyl.
• 4-Cylinder (Any Turbo Size) – 1,975 lbs.
• 6-Cylinder (Any Turbo Size) – 2,025 lbs.
Weight Additions/Reductions
No Dual Power Adders
Nitrous Combinations
- Add 25 lbs. for Transmission with Four (4) or More Forward Gears, automatic transmission only. Addition does not apply to clutch combination.
Boosted Combinations
- Weight Additions/Reductions:
- Roots Blower Only* -Add 25lbs for each gear over Three (I.E: 4 Speed +25, 5 Speed +50 etc.)
- – Add 25 lbs. for Transmission with four (4) or more forward gears.
- – Add 50 lbs. for Billet Centrifugal Supercharger.
- – Deduct 50 lbs. for 136mm Centrifugal Supercharger.
- – Weight additions do not apply to any Diesel combinations.
- 140.99 centrifugal max
Wheels: 18″ Maximum Width rear wheels
Fuel
Racing gasoline and methanol permitted. The use of nitro methane, nitroparaphins and/or propylene oxide is strictly prohibited. Diesel combinations must use VP Torq DX for fuel.
Thanks for your cooperation!
Last updated: January 9th 2023
