Embosses Steel Head gaskets for Big block Ford FE, bore 4.420", Thickness .020" Mr. Gasket's Steel Shimmed cylinder head gaskets are perfect 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's steel shim gaskets are made from .020 inch steel shim stock and made thinner than OE head gaskets thereby increasing engine compression. Stress formed embossments will seal the extreme cylinder pressure.
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