Vintage Series Finned Valve CoversSmall Block ChevyPerimeter Bolt Style Without Breather HoleBlack Finish Designed to fit all 1958-86 Small Block Chevy engines with perimeter bolt patternsDie-cast aluminum construction ensures high detail and reduces the opportunity for warping of the valve cover flange and oil leaks3-1/2" tall with a solid body for non-emissions applications or custom crankcase ventilation setupsAvailable with and without emissions provisions for your custom application (emissions compliant model includes pre-installed internal oil baffles in both covers, as well as PCV and oil fill grommets)Available finishes offered are as cast, satin black with machined fins, and polished.