Cometic 92-96 GM LT1 Small Block 4.100 inch Bore .030 inch MLS Head Gasket (w/Valve Pockets)

If you're rebuilding the top end of your GM LT1 or LT4 engine, getting the sealing right is critical. This Multi-Layer Steel (MLS) head gasket from Cometic is built to handle the demands of these performance V8s. It's designed for a 4.100 inch bore and has a compressed thickness of .030 inches, which is a common size for many LT1/LT4 builds, especially when you might be doing a slight overbore or using specific head combinations. This gasket fits a wide range of GM vehicles from the mid-90s, including popular models like the Chevrolet Corvette, Camaro, and Pontiac Firebird.

What makes these MLS gaskets stand out is their construction. They're made from multiple layers of stainless steel, which gives them a lot of strength and helps them resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle high temperatures and harsh sealing environments. This combination means you don't need to use any extra sealants; the gasket itself creates a solid seal between your aluminum heads and either aluminum or cast iron blocks. The center layer is also stainless steel and can be varied in thickness, which is how Cometic achieves the specific .030 inch compressed thickness on this particular gasket.