Cometic Chevrolet Gen-1 Small Block V8 .086in MLS Cylinder Head Gasket - 4.200in Bore

If you're working on a Chevrolet Gen-1 Small Block V8 engine, this Cometic Multi-Layer Steel (MLS) head gasket is a solid choice for sealing your cylinder heads. It's designed with a 4.200-inch bore and a compressed thickness of 0.086 inches, making it suitable for a wide range of applications, including aftermarket heads. This gasket fits many vehicles from the early 80s, like the Chevrolet Camaro, GMC C1500, and Buick Regal.

What makes this gasket stand out is its construction. It's built from multiple layers of stainless steel, which gives it increased strength and the ability to rebound, helping it resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. This combination ensures a maximum sealing performance, even with aluminum heads on cast iron blocks, and it doesn't require any additional sealants. The center layer is stainless steel, and its thickness can be varied to meet different requirements, which is why this particular gasket has undersized water ports for customization on aftermarket heads.

When installing this gasket, especially on aftermarket heads, pay attention to the water port sizing to ensure a proper seal. This Cometic gasket is a well-built option for rebuilding or upgrading your Gen-1 Small Block V8.