Cometic Chevy Small Block 4.200 inch Bore .080 inch MLS-5 Head Gasket (w/All Steam Holes)

When you're rebuilding the top end of a Chevy Gen-1 Small Block V8, getting the sealing right is crucial, and that's where a Multi-Layer Steel (MLS) head gasket like this one from Cometic comes in. This gasket is built with a compressed operating thickness of 0.080 inches and features a 4.200-inch bore, designed to handle the demands of high-output engines. It's a well-built option that fits a wide range of popular GM vehicles from the early 80s, including models like the Chevrolet C10, Camaro, and GMC C1500.

What sets this gasket apart is its construction: multiple layers of stainless steel provide strength and the ability to rebound, resisting corrosion and shearing forces, especially when mating aluminum heads to iron blocks. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C) and works well with various surface finishes. This advanced construction means you don't need to use sealants, simplifying installation and ensuring a reliable seal for your engine build.