12-Piece SAE Bolt Kit for Chevy Engines. Superior rust and corrosion protection with clear zinc coating. Compatible with all Chevrolet Big Block Engines: 396, 402, 409, 427, 454, 472, 502. Compatible with all Chevrolet Gen 1 & 2 Small Block Engines: 265, 283, 305, 307, 327, 350, 366, 383, 400.
