Cometic Chevrolet Mark-IV - GM Gen-V/VI Big Block V8 .030in MLS Cylinder Head Gasket - 4.570in Bore

This Cometic Multi-Layer Steel (MLS) head gasket is designed for Chevrolet Mark-IV and GM Gen-V/VI Big Block V8 engines. It features a 4.570-inch bore and a compressed operating thickness of .030 inches, making it suitable for a wide range of vehicles including models like the 1965-1975 Chevrolet Bel Air, 1968-1974 Chevrolet C10 Pickup, and 1965-1974 Chevrolet Corvette.

Built with multiple embossed layers of stainless steel, this gasket offers increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle demanding sealing environments and various surface finishes. This construction means the gasket requires no additional sealants and is ideal for sealing between aluminum heads and either aluminum or cast iron blocks, effectively managing the shearing forces that can occur between different metals. The center shim layer is uncoated stainless steel, allowing for thickness adjustments to meet specific needs.

This particular gasket is intended for aftermarket heads and features undersized water ports, giving you the flexibility to customize them for your specific build. It's a well-built option for high-output engines where reliable sealing is critical.