Chevrolet Valve Covers Ribbed Bowtie Design Chevy Orange Chevy Small Block V8 Engines 1987 to Pre LS ProformThe Chevy Orange Center Bolt Valve Covers are for Chevy Small Block Gen II Engines (305 350 Engines; 1987 pre LS). Made from stamped steel, they are 20 percent thicker than typical aftermarket valve covers. They are manufactured to GM specifications, equipped with internal oil drippers and GM designed baffles. Short (production height) style, and featuring the Ribbed Bowtie Design in black. Supplied with mounting bolts, stainless steel and rubber