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2008 Street Stock Rule Adjustments
EFFECTIVE: December 20, 2007
The following are updates to the 2007 UMP DIRTcar rules guidelines used to govern
Street Stock/Pure Stock racing at Cayuga County Fair Speedway, Canandaigua
Speedway, Can-Am Speedway, Thunder Alley Speedway, Rolling Wheels Raceway
and Brewerton Speedway. A full version of the rules is available by calling DIRTcar NE
or checking with each individual track. The 2008 rules will be frozen for a two year
period and will be effective through 2009. All other rules from the 2007 Central New
York Street Stock rulebook are still in effect.
Engine Specifications:
Factory sealed GM crate engine part #88958602 is allowed.
1. Crate engine MUST remain as manufactured by GM.
2. Crate engine distributors MUST remain stock as supplied by GM (unaltered in
any way). Engines may not have GM factory seals tampered with.
3. The crate engine is allowed the use of a four barrel Holley carburetor part # 4777
in STOCK form or the Holley HP 650 80541-1 in stock form.
Cast iron engine option (non-crate) intake manifold:
May be either stock cast iron OEM or one of the following aftermarket alum. 4-bbl.
single plane intake
- Chevrolet: Weiand Part #7547 & Edelbrock Part #5001
- Ford: Weiand Part #7515 & Edlebrock Part #5021
- Chrysler: Weiand Part #7545 & Edelbrock Part #5076
- Chrysler: W-2 Heads Weiand Part #2920
NOTE: Only 2 unaltered carb. adapters will be allowed: Part #BRP377 & HV-301
Stock steel or tubular steel aftermarket upper A-frames are permitted.
1. They must be one-piece steel with a minimum wall thickness of .095” with no
form of adjustment.
2. Cross shaft must be steel only.
3. Stock type ball joint only. No adjustable uniball type.
4. Chassis cross-shaft mounts for upper A-frames may be fabricated and relocated.
5. Any excessive cutting of A-frames for shock clearance is up to the discretion of
the officials.
6. Ball joints used must maintain stock ride height.
Battery:
May be located in the engine compartment or in the trunk area, sealed from driver's
compartment and securely fastened to prevent contact with metal parts and damage in
the event of a roll over or impacts. A Battery Disconnect on the Hot Side in reach of the
driver and officials is MANDATORY. If located in trunk area, MUST have external
charging post to prevent any sparks while charging battery. If in the trunk, fuel cell must
be properly grounded with a strap from fuel cell cap ring to the chassis.
Seat:
Driver must be located in stock O.E.M. position. Seat must be located a minimum of 25
inches in front of the center of the rear axle, measured to the rear of the bottom of the
racing seat.
Wheels and Tires:
RACING WHEELS ARE MANDATORY. All wheels will be steel (no aluminum).
Minimum width 7", maximum width 8". One steel beadlock is allowed on the right rear of
car.
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