Pro Mod

OUTLAW PRO MOD Presented by CARMACK ENGINEERING:

CLASS DESIGNATION: Car number must be on all four sides of the vehicle, class designation of 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. 16 Car Qualified Field.

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.
WEIGHTS – CENTRIFUGAL SUPERCHARGER:
  • BB Centrifugal Supercharger (526 CID) (No Lock-Up) –2,550 lbs.
  • BB Centrifugal Supercharger (526 CID) (With Lock-Up) –2,600 lbs.
  • Diesel Centrifugal Supercharger (521 CID) –2,500 lbs. Roots Supercharger
  • SB Roots Supercharger –2,350 lbs.
  • BB Roots Supercharger(526 CID) (No Lock-Up, 3 Speed or Less) –2,450 lbs.
  • BB Roots Supercharger (526 CID) (With Lock-Up) –2,500 lbs.
WEIGHTS – SCREW SUPERCHARGER:
  • SB Screw Supercharger –2,500 lbs.
  • BB Screw Supercharger (526 CID Maximum) (C-Rotor) (Maximum 92% Overdrive) (No Lock-Up)-2,600lbs.
  • BB Screw Supercharger (526 CID Maximum) (C-Rotor) (Maximum 92% Overdrive) (With Lock-Up) –2,675lbs.
WEIGHTS – WHIPPLE SUPERCHARGER:
  • BB Whipple Supercharger A980 (526 CID Maximum) (Maximum 75% Overdrive) (No Lock-Up)-2,400lbs.
  • BB Whipple Supercharger A980 (526 CID Maximum) (Maximum 92% Overdrive) (No Lock-Up)-2,450lbs.
    (Add 50lbs lock-Up Transmissions)
WEIGHTS – TURBOCHARGER:
  • SB Single Turbocharger (118mm, lock-up permitted) –2,150 lbs.
  • BB Single Turbocharger (118mm, lock-up permitted) –2,450 lbs.
  • SB Twin Turbocharger (88mm, lock-up permitted) –2,200 lbs.
  • SB Twin Turbocharger (94mm, lock-up permitted) –2,250 lbs.
  • BB Twin Turbocharger (526 CID) (88mm, no lock-up) –2,500 lbs.
  • BB Twin Turbocharger (526 CID) (88mm, with lock-up) –2,550 lbs.
  • BB Twin Turbocharger (526 CID) (94mm, no lock-up) –2,600 lbs.
  • BB Twin Turbocharger (526 CID) (94mm, with lock-up) –2,650 lbs.
  • Diesel Twin Turbocharger (88mm, 521 CID) –2,500 lbs.4 Cyl./6 Cyl.
  • 4-Cylinder (Any Turbo Size) –2,000 lbs.
  • 6-Cylinder (Any Turbo Size) –2,100 lbs.
WEIGHT ADDITIONS/REDUCTIONS:
  • Add 25 lbs. on Base for 527-548 Max CID on any engine combination.
  • Add 50 lbs. on Base for 549-599 Max CID on any centrifugal combination only.
  • Add 25 lbs. for BB with Transmission with four (4) or more forward gears.
  • Deduct 25 lbs. for 136mm centrifugal supercharger.
  • Weight adders do not apply to any diesel combinations
  • Bias Ply Tires to only be used in competition (NO RADIAL TIRES)
Thanks for your cooperation!

Last updated: November 16, 2020