Fel-Pro Performance Chev 350 SBC Exhaust Header Gasket Sets # 1484Exhaust Header Gasket, Chevy, V8 262 400, Round Splayed Valve GM Corp, Set Port Style: Round large port Gasket Material: Steel core laminate Port Height (in.): 1. 940 Port Width (in.): 1. 940 Quantity: Sold as a set. Notes: For use with 18 degree adapter plates. Fel Pro Performance Exhaust Header Gasket Sets Fel Pro Performance gaskets are an ideal choice for the vast majority of racing and street performance engines. They're available in a broad