1131G Mr Gasket EMB STL SHM HG BB CHEV 1 PC

EMB STL SHM HG BB CHEV 1 PC Note: Steel Shim Gaskets are not recommended for use with aluminum cylinder heads since the endorsements in the gasket will cause indents in the deck surface of the heads. Mr. Gasket Steel Shim Head Gasket Fits 1965-1990 Chevrolet 396-454 Big Block. 4.370 Inch Bore, .020 Inch Compressed Thickness Mr. Gasket Steel Shim Cylinder Head Gaskets are for high performance street machines, drag racing and oval track racing. With today's extreme compression ratios you need stronger more durable gaskets. Mr. Gasket steel shim gaskets are made from .020 inch steel shim stock which is thinner than most composite gaskets increasing engine compression. Stress formed embossments will seal the extreme cylinder pressure. Manufactured from .020" steel shim stock. Thinner than composition head gaskets - increases engine compression. Stress formed embossments seal extreme cylinder pressures. For high performance street, drag race and oval track use.