Cometic Chevrolet Mark-IV Big Block V8 .056in MLS Cylinder Head Gasket - 4.630in Bore

When you're rebuilding the top end of your Chevrolet Mark-IV Big Block V8, getting the head gasket right is crucial for a solid seal. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the demands of high-output engines, ensuring reliable performance and preventing leaks between your cylinder head and block.

Cometic uses multiple layers of stainless steel for increased strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C) and works well with different block and head materials, including aluminum-to-aluminum or aluminum-to-cast iron setups. The compressed thickness is .056 inches, and it's designed for a 4.630-inch bore, fitting a wide range of Chevrolet vehicles from the mid-60s through the mid-80s, like the Impala, Chevelle, and C10 pickups.