Cometic Street Pro GM 1970-76 455ci PONTIAC Big Block 4.200 Top End Gasket Kit

When you're rebuilding the top end of your GM 1970-76 455ci Pontiac Big Block, this Cometic Street Pro gasket kit has what you need to get the job done right. This kit is put together with the budget-minded street-rodder in mind, offering all the essential gaskets and seals required for a complete top-end rebuild. It's designed to fit a range of Pontiac models from the early 70s, including vehicles like the Bonneville, Catalina, and Firebird.

Cometic uses quality gasket materials in their StreetPro kits, incorporating a mix of MLS (Multi-Layer Steel), AFM (Advanced Sealing), Aramid Fiber, and Armor Clad. These materials are chosen to ensure a solid seal for your engine's critical areas. The cylinder head gaskets in this kit are .040 inches thick and designed for a 4.200-inch bore, which is specific to the Pontiac 455ci big block engine.