BBK's GM TPI intake manifold system for the popular 1985-92 GM 305/350 TPI engine family that can be found in the Corvette, Camaro and Firebird features a high-flow design aluminum lower manifold, equal-length tubular runners and large volume plenum area - this manifold is making up to 50 extra horsepower and 50 ft lbs of torque on a stock 5.7L IROC-Z. Made in the U.S.A.

Helping produce about 10-12 horsepower of this gain is BBK's "Power-Plus-Series" twin 58mm throttle bodies which is also available at a reduced cost in kit form with the manifold system. Like all BBK products - this intake manifold system is designed to meet or exceed OEM standards and will bolt-on without other modifications.