SCCA
RACE: SCCA GT-1 rule change for Trans-Am competition
GT-1 competitors to benefit from rule change LANSING, Mich. -- The Trans-Am Series for the BFGoodrich® Tires Cup has modified its engine rules to allow for more participation from GT-1 competitors. The rule legalizes the use of 358-cubic-inch, ...
Edited: Dec 21, 2009, 5:33 AM
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GT-1 competitors to benefit from rule change
LANSING, Mich. -- The Trans-Am Series for the BFGoodrich® Tires Cup has modified its engine rules to allow for more participation from GT-1 competitors. The rule legalizes the use of 358-cubic-inch, 13:1 compression ratio engines in GT-1 cars. The original rule required 358-c.i.-engined GT-1 cars to have a 9.5:1 compression ratio.
The new rule is based on the following restrictions:
* Use of a Holley 390, 4-barrel carburetor p/n 080507-1, with a maximum throttle bore diameter of 1.4375 inches, and with a maximum venturi diameter of 1.0645 inches
* A maximum of 8,000 rpm electronic rev limit
* A minimum car weight of 2,800 pounds without fuel and driver
* Driver/entrant must not have competed in a Trans-Am Series race in calendar years 2002 or 2003
* Drivers must have not finished in the top five in a professional series in the last five years
* Drivers must have a current SCCA Club or Club/Pro dual license
* Car must conform to all Trans-Am Series specifications concerning safety regulations, maximum fuel cell capacity, fuel cell installation and construction, tires, wheels and must maintain a maximum overall car width of 80 inches
* Car must conform to all other GT-1 competition parameters a specifieds in the 2003 Technical Specification s
* Independent rear suspension is not approved
* Car and driver combination is subject to approval by the Trans-Am Series Technical Director and Chief Steward
"One of our stated primary goals at the beginning of this season was to encourage GT-1 participation," said Series Technical Director David King. "This rule change brings our specifications much closer to the SCCA's GT-1 rules and will make it easier for GT-1 teams to compete in the Trans-Am Series."
GT-1 entries adhering to the Trans-Am Series' engine rules as published in the 2003 Technical Specifications (310 c.i. and 358 c.i. low compression) remain eligible for full season competition privileges as specified in Trans-Am Rule Book Technical Specifications.
-scca/trans am-
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