The Edelbrock #60879 Corvette center bolt cylinder head is designed for 1986-91 Tuned Port Injected (T.P.I) 5.7L small-block Chevy Corvette engines originally equipped with center bolt valve covers. Performer center bolt cylinder head is 50-state street legal and accept factory center bolt valve covers. The intake bolt pattern utilizes the 1986-91 (straight) 90deg angle on all bolts. Spark plugs are angled like a stock O.E. head. The Edelbrock Performer head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. They also feature the highest quality intake and exhaust valves and valve springs.

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