Cometic Chevy Big Block Brodix Big Duke/Big Brodie Heads 4.57in Bore .040in MLS Head Gasket

Starting with a compressed operating thickness of 0.040 inches, this Cometic Multi-Layer Steel (MLS) head gasket is built for serious performance applications. It's specifically designed to work with Brodix Big Duke and Big Brodie heads, featuring a 4.57-inch bore. These gaskets are constructed from multiple layers of stainless steel, which gives them increased strength and the ability to rebound, helping them resist corrosion and withstand the forces in high-output engines. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit, ensuring a solid seal even in demanding conditions. The center layer is uncoated stainless steel, allowing for precise thickness control.

Because they are MLS gaskets, they don't require any additional sealants, making installation more straightforward. They are suitable for mating aluminum heads to either aluminum or cast iron blocks, effectively handling the shearing forces that can occur between different metals. This gasket is a well-built option for builders looking for reliable sealing performance for their Chevrolet Mark-IV or GM Gen-V/VI Big Block V8 engines, especially when using aftermarket heads where the water ports are undersized for customization.

This gasket fits a wide range of Chevrolet and GM vehicles from the mid-60s through the early 90s, including popular models like the Chevrolet Impala, C10 Pickup, and Corvette. It's a solid choice for anyone rebuilding or modifying their Big Block V8.