Cometic Chevrolet Gen-1 Small Block V8 .066in MLS Cylinder Head Gasket - 4.200in Bore

This product includes a pair of Cometic Multi-Layer Steel (MLS) cylinder head gaskets, designed for Chevrolet Gen-1 Small Block V8 engines. These gaskets feature a 4.200-inch bore and a compressed thickness of 0.066 inches. They are built to handle the demands of high-output engines and are suitable for use with aftermarket heads, featuring undersized water ports that allow for custom fitting. The MLS construction offers increased strength and corrosion resistance due to its multiple stainless steel layers.

The outer layers of these gaskets are embossed and coated with Viton, a heat-resistant rubber material capable of withstanding temperatures up to 482°F (250°C). This coating ensures reliable sealing in harsh environments and under various load conditions. The center layer is uncoated stainless steel, allowing for different thickness requirements. These gaskets are designed for direct sealing without the need for additional sealants and are compatible with both aluminum-to-aluminum and aluminum-to-cast iron block configurations, effectively managing the shearing forces between dissimilar metals.

This gasket set fits a wide range of vehicles, including models like the Chevrolet Camaro, Corvette, and GMC C1500 from the early 1980s through the mid-1980s. They are a solid option for rebuilding the top end of your engine, especially when using aftermarket cylinder heads.