Cometic Chevrolet Mark-IV - GM Gen-V/VI Big Block V8 .092in MLS Cylinder Head Gasket - 4.630in Bore

If you're working on a Chevrolet Mark-IV or GM Gen-V/VI Big Block V8, this Cometic Multi-Layer Steel (MLS) cylinder head gasket is built to handle the demands of high-output engines. It's designed for a 4.630-inch bore and a compressed thickness of 0.036 inches, providing a solid seal between your block and heads without needing additional sealants.

This gasket is constructed from multiple layers of stainless steel, which gives it increased strength and the ability to rebound, helping it resist corrosion. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes. The center layer is stainless steel and can be varied to achieve different thicknesses, like the 0.092-inch overall thickness of this particular gasket. It's well-suited for combinations of aluminum heads with aluminum or cast iron blocks, as it can manage the shearing forces that can occur between different metals.

This gasket is intended for aftermarket heads and features undersized water ports, allowing for customization during installation. It fits a wide range of vehicles, including models like the Chevrolet Impala, Camaro, and C10 Pickup from the 1960s and 70s.