Cometic Chevrolet Mark-IV Big Block V8 .054in MLS Cylinder Head Gasket - 4.320in Bore

If you're working on a Chevrolet Mark-IV Big Block V8, this Multi-Layer Steel (MLS) cylinder head gasket from Cometic is a solid choice for sealing your combustion chambers. It's designed to handle the demands of high-output engines and fits a wide range of classic Chevrolet vehicles, including models like the Impala, Chevelle, and C10 pickups from the mid-60s through the early 80s.

This gasket is constructed from multiple layers of stainless steel, which gives it 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, ensuring a reliable seal even under tough conditions. The center layer is stainless steel and can be varied to achieve different thicknesses, like the .054 inch this gasket offers, with a compressed operating thickness of .036 inches. Because it's an MLS gasket, it doesn't require any additional sealants, making installation more straightforward.

This type of gasket is well-suited for applications using both aluminum and cast iron blocks, and it can effectively manage the shearing forces that can occur between different metal types. It's a well-built component designed for maximum sealing performance.