Cometic Chevy Mark-IV Big Block V8 .060in MLS Cylinder Head Gasket - 4.350in Bores

This is a Cometic Multi-Layer Steel (MLS) head gasket specifically for Chevrolet Mark IV Big Block V8 engines. It's built with a .060 inch thickness and a 4.350 inch bore diameter, designed to fit a wide range of classic Chevy V8 applications from the mid-60s through the early 80s, including models like the Impala, Chevelle, and C10 pickups.

The key feature here is the HP shim technology integrated into the gasket. This design increases the clamping force around the combustion chamber, which is especially helpful for open deck blocks like those found in many Mark IV engines. This improved sealability helps prevent leaks and ensures consistent performance under pressure. The outer layers of the gasket are embossed and coated with Viton, a material known for its resistance to heat and oil, further enhancing its sealing capabilities and durability.

When you're rebuilding or refreshing a big block Chevy, getting the head gaskets right is crucial for a solid seal. This Cometic gasket is a well-built option that addresses the specific needs of these engines, offering improved sealing technology for reliable operation.