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Pro Stock 2010
Naturally aspirated class. No power adders permitted. Stock
bore spacing only.
Body and chassis:
-Lexan/plexiglass window replacements permitted but must
appear stock. No visible
bracing, screws, rivets, etc. permitted.
-Functioning lights required.
-Light weight body panels allowed
-Stock style front suspension required. Bolt in replacement
components allowed.
Non O.E. style components subject to weight adder.
-Ladder bars and 4 links permitted. See weight adders below
-Stock fire wall and location required. Modified or non
stock firewall location
subject to weight adder.
-Small rear wing permitted
-Forward facing hood scoops permitted. See weight adders
below
Exhaust:
-Mufflers required. Must be commercially available units, no
home built mufflers.
No gutting of mufflers permitted. No inserts style mufflers
-No max pipe diameter
Induction:
-Any type permitted. See weight adders below
Cylinder heads:
-Non Conventional Big block heads add .25lb/ci. (N/C heads
include Buick, Big Chief
style heads, etc.)
-All canted valve small block cylinder heads + 50#
-10 to 14 degree heads +50#
-15 to 17 degree heads +25#
-18 to 20 degree heads -50#
-20 and over degree heads -100#
Big Block Prohibited head list:
Chevrolet
-Profiler 12 degree Hitman #184
-Brodix PB-1200 and PB-2005
-Dart Big Chief II 11degree #18500000
-RMRE 12 degree Raptor
-CFE DRCE 4.840 Bore
-CFE Big Chief 10 degree
Ford
-Profiler #205
-Blue Thunder Thor
-IDT Eliminator Series
-Ford C-460
-Ford E-460
Mopar
-NRC Heads (Predator Heads)
-B1 Top Sportsman
-Indy 600-13
Some non conventional heads will be assessed on a per case
basis.
Tires:
-29.5x10.5W" maximum slick
Transmission:
-Any automatic or manual transmission
-Any converter OK but all shifts must occur manually by the
driver. No automatic shifters
Base weight:
-2600# small block minimum base weight+3# per ci above 300ci
to 470ci. Add 2#
per ci over 471ci
-2650# big block minimum base weight+3# per ci above 300ci
to 470ci. Add 2#
per ci from 471ci to 632
-Maximum 632ci
Weight adders:
-100# weight adder for clutchless “Liberty type” manual
transmission
-50# weight adder for clutchless “Lenco type” manual
transmission
-Ladder bars permitted
-4 links allowed with 25# adder
-Two carbs add 100#
-Sheetmetal intake add 50#
-Wheelie bars add 50#. 60” max length (axle c/l to wheelie
bar wheel c/l)
Weight break:
-50# weight break for non forward facing (cowl induction
style) hood
-50# weight break for non W rear tire. Must be 10.75” tread
width or smaller to
qualify for break. Will be measured via a go-no go gauge during tech.
-50# weight break for stock style rear suspension (diagonal
4 link or 3 link , Torque
arms)
-150# weight break for 4.6L/5.4L Modular Engines
-75# nostalgia (1981 and older ) body style/truck
-50# weight break for 2 speed auto transmission
-75# weight break for leaf spring equipped entries- must
transmit all power
through the eye of the spring
Safety:
-HANS (or equivalent) device - Mandatory
Fuel:
-Gasoline only
If you are building a race car and you are unclear about
rules concerning your class, please contact us.
The CSCN reserves the right to impose penalties for rule
infractions and on items which do not represent the intent
of the class entered.
Rules are subject to change without notice. If in doubt as
to rule interpretation please contact us for final ruling.
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