Cometic Chevy Gen1 Small Block V8 .040in MLS Cylinder Head Gasket - 4.145in Bore - Vortec Heads

If you're rebuilding the top end of your Chevy Gen-1 Small Block V8, especially with Vortec heads, getting the cylinder head gasket right is crucial for a good seal. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the demands of modern engines, whether you're working with aluminum heads on an aluminum block or aluminum heads on cast iron.

Cometic uses multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes, meaning you don't need extra sealants. The center layer is stainless steel and can be varied in thickness; this particular gasket has a compressed operating thickness of .040 inches and a 4.145-inch bore, designed to fit Vortec heads specifically. This construction helps prevent leaks and ensures consistent performance.

This gasket fits a wide range of 1980-1986 Chevrolet and GMC trucks, cars, and vans, as well as some Avanti and Excalibur models. It's a well-built option for anyone looking to ensure a reliable seal during their engine rebuild.