Cometic Chevrolet Mark-IV - GM Gen-V/VI Big Block V8 .036in MLS Cylinder Head Gasket - 4.310in Bore

When you're rebuilding the top end of your Chevrolet Mark-IV or GM Gen-V/VI Big Block V8, you need a head gasket that can handle the pressure. This Multi-Layer Steel (MLS) gasket from Cometic is built for high-output engines and offers a compressed thickness of .036 inches with a 4.310-inch bore. It's designed to provide maximum sealing performance without needing additional sealants, making it a solid choice for both aluminum and cast iron block combinations.

Cometic's MLS design uses multiple layers of stainless steel, which not only adds strength but also allows the gasket to rebound and resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and varying surface finishes. The center layer is stainless steel, and its thickness can be adjusted to meet different requirements, like the .036-inch compressed thickness found here. This gasket is also noted for having undersized water ports, which allows for customization when used with aftermarket heads.

This gasket fits a wide range of vehicles, including popular models like the 1965-1975 Chevrolet Bel Air, 1968-1974 Chevrolet C10 Pickup, and 1965-1974 Chevrolet Corvette. It's a well-built component designed for engines that demand reliable sealing under stress.