Cometic Chevrolet Gen-1 Small Block V8 .030in MLS Cylinder Head Gasket - 4.030in Bore

If you're rebuilding the top end of a Chevrolet Gen-1 Small Block V8, this Cometic Multi-Layer Steel (MLS) head gasket is a solid option. It's designed with a 4.030-inch bore and a compressed thickness of .030 inches, making it suitable for a range of applications, including those using aftermarket heads where the water ports are undersized for custom fitting. This gasket fits a wide variety of vehicles from the early 1980s, such as Chevrolet C10 trucks, Camaro, and Corvette models, as well as Buick and GMC equivalents.

Cometic builds these gaskets using multiple layers of stainless steel, which gives them increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. This construction means the gasket seals effectively without needing additional sealants, and it's designed to handle the forces between aluminum and cast iron blocks. The center layer is uncoated stainless steel, allowing for variations in thickness to meet specific build requirements.