This class is limited to nitrous, single
turbo, centrifugal superchargers/OEM
style automatic cars/trucks.
Body and chassis:
-Lexan/plexiglass window replacements
permitted
-Functioning lights required.
-Sponsor lettering restricted to vehicle
glass and/or hood only.
-Light weight body panels allowed.
-Stock style or ladder bar rear
suspension.
-Stock style front suspension required.
Full stock front frame required with
stock suspension
pick up points retained. Coil over
conversions allowed. No strut
conversions.
-Stock fire wall and location required.
-No front spoiler unless OEM equipped.
-A small rear wing permitted. No molding
of spill plates to quarters
Exhaust:
-Mufflers required. Must be commercially
available units, no home built mufflers.
No gutting of mufflers permitted. No insert style
mufflers
Induction:
-Cast aluminum non tunnel ram intakes
only. No carbon fiber/sheet metal
intakes. Fuel injected entries may use fabricated sheet metal
upper intake with cast aluminum lower
intake.
-Single carburetor or throttle body only
Nitrous systems:
-Nitrous systems limited to 4 solenoids
(2 nitrous and 2 fuel).
-Single stage systems only. Must use
fogger or plate, no combination of the
two will be
permitted.
-Fogger systems limited to single
nitrous and fuel nozzle per cylinder
with single nitrous and fuel feed per nozzle.
-Plate systems limited to single plate.
-Progressive systems with 1 extra
nitrous solenoid permitted.
-System limited to single 15# bottle
with single -6AN feed line from bottle
to engine
compartment mounted nitrous solenoid or
distribution block.
-No disconnected auxiliary nitrous
equipment permitted. Only approved
nitrous system may be on entry to pass USCN tech inspection.
Tires:
-Maximum rear DOT
tire 31 x 13.5
-29.5
x 10.5" non W slick
Transmission:
-OEM style automatic trans
Engines/ Weights Nitrous:
-Minimum weight 2900# (entries cannot be
lower than base weight regardless of
weight
breaks)
-350ci 2900# +2.5#/cube over 350
-450ci 3150# +1.5#/cube over 450 up to
510
Maximum 525ci
Engines/Weights Single Centrifugal
superchargers:
-Minimum weight 2950# (entries cannot be
lower than base weight regardless of
weight
breaks)
-300ci 2950# +3.3#/cube over 300
-360ci 3150# +2.5#/cube over 360
-400ci 3250# +2#/cube over 400 up to
510
Maximum 510ci
List of approved superchargers:
-Vortech A, B, S, YS, JT, & T TRIM
-ATI Procharger P600, D-1, D-1SC, D-1R
-ATI Procharger P1SC, P1SC-2, P1SC-H
-ATI Procharger F1, F1R
-Paxton SN, VR4, NOVI 1000, 2000
-Powerdyne BD-9, BD-10, BD-11, XB-1A
*Please note that some superchargers not
found on list may be subject to
exemption. Prior
written consent must be granted by the
USCN and may be subject to weight
penalty.
Engines/ Weights Single turbocharger:
-Minimum weight 3050# (entries cannot be
lower than base weight regardless of
weight breaks)
-300ci 3050# +3.3#/cube over 300
-360ci 3250# +2.5#/cube over 360
-400ci 3350# +2#/cube over 400 up to
510
Maximum 520ci
Turbochargers:
-Max turbo inlet diameter TRUE 85mm
Safety:
-Engine Diaper - Mandatory. Non SFI
units OK.
-Fire System - Mandatory.
-HANS (or equivalent) device required
for racers exceeding 190MPH
Fuel:
-Gasoline only
