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True Street Single power adder stock style and ladder bar
suspension class for nitrous, blowers and turbos
Body and chassis:
-Lexan/plexiglass window replacements permitted but must
appear stock. No visible
bracing, screws, rivets, etc. permitted.
-Functioning lights required.
-Full interior required (i.e. must have upholstered door
panels & dash).
-Sponsor lettering restricted to vehicle glass and/or hood
only.
-Light weight body panels allowed.
-Stock style suspension required front and rear. Bolt in
replacement components
and traction devices allowed.
-Ladder bar suspension permitted on plate nitrous entries
only.
-Back half chassis with stock rear frame removed subject to
weight adder.
-Stock fire wall and location required.
-No forward facing hood scoops unless OEM equipped.
-Any aftermarket or fabricated ram-air unit is allowed, but
it must not be visible
from the exterior.
-No rear wing or front spoiler unless OEM equipped.
Exhaust:
-Mufflers required. Must be commercially available units, no
home built mufflers.
No gutting of mufflers permitted. No inserts.
-Max pipe diameter for all entries-unlimited
Induction:
-Cast aluminium non tunnel ram intakes only. No carbon fiber/sheet
metal intakes.
Fuel injected entries may use fabricated sheet metal upper intake with
cast
aluminium lower intake.
-Single carb or throttle body only with 1" maximum spacer.
-Dominators and throttle bodies over: 90mm single or 10
sq/in equivalent 2 or 4
hole permitted but subject to weight adder. See weight adders below.
Tires:
-Maximum rear tire size 12.5" x 30" DOT. 325 drag radial
max size.
-No slicks permitted.
-All tire sizes are as designated on sidewall.
-No wheelie bars.
-Single power adder only.
Turbochargers:
-Max turbo inlet diameter 85mm.
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 CSCN and may be subject to weight penalty.
Nitrous systems
-Nitrous systems limited to 4 solenoids (2 nitrous and 2
fuel).
-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 SS tech inspection.
-Single stage systems only. Must use fogger or plate, but no
combination of the
two.
-Fogger systems limited to single nitrous and fuel nozzle
per cylinder with single
nitrous and fuel feed per nozzle.
-Plate systems limited to single stage, single plate with 1
nitrous and 1 fuel
solenoid. Fuel injected (ladder bar equipped) entries must run "wet"
nitrous
system and are subject to 50# weight adder.
-Progressive systems with 1 extra nitrous solenoid
permitted.
Base weights:
-2900# base weight+3# per ci above 300ci to 400ci and 1# per
ci from 401ci to
540ci for nitrous entries.
-2900# base weight+5# per ci above 300ci for supercharged
and turbocharged
entries.
-Maximum 540ci.
Weight adders:
-Dominators and throttle bodies over: 90mm single or 10
sq/in equivalent 2 or 4
hole subject to 50# weight adder
-Back half chassis with stock rear frame removed add 100#
Weight breaks:
-100# weight break for non intercooled supercharged entries
Safety:
-Fire System Mandatory
Fuel:
-Gasoline only
Race Format:
-.400 Pro tree start with a sportsman ladder
If you are building a race car and you are unclear about
rules concerning your class, please contact us.
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