Cometic Chevrolet Mark-IV Big Block V8 .098in MLS Cylinder Head Gasket - 4.540in Bore

If 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 these powerful engines, ensuring your combustion chambers stay sealed tight.

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 temperatures up to 482 degrees Fahrenheit. This construction means the gasket can handle the differences in expansion between aluminum heads and cast iron blocks without issue, and it doesn't require any additional sealants to do its job. The compressed thickness is .098 inches with a bore size of 4.540 inches, designed to fit a wide range of Chevrolet V8 applications from the 1960s through the 1990s, including popular models like the Impala, Chevelle, and C10 pickups.

This gasket is a well-built option for anyone looking for reliable sealing in a performance or restoration build. Make sure to check the full fitment list to confirm it's the right choice for your specific vehicle.