Do you miss that classic look of GM’s LT1, L82, and Z28 equipped engines from the 1970’s? Well Holley is bringing back the past, with our “Muscle Series” small block Chevy valve covers. The Muscle series is a continuation of Holley’s Vintage line of valve covers, featuring retro styling with the iconic 70’s finned look. They are designed to fit all 1958-1986 Small Block Chevy engines with the perimeter style bolt pattern. Muscle series valve covers were designed as a standard height valve cover and are constructed of die-Cast aluminum. The finned design and cast aluminum construction adds strength and rigidity, providing you years of leak free performance. Every set includes one valve cover with a knockout for installing the included twist-on oil fill cap. The other valve cover has a recessed area for attaching the provided Holley emblem or you can replace it with an emblem of your choice. Grommets for both the PCV and oil fill Provisions are conveniently located in both covers. They’ve even installed internal oil baffles to prevent excessive oil accumulation in the crankcase ventilation system. No matter what your style might be, with four popular finishes including polished, black, factory orange and natural. Holley is sure to have a valve cover to dress up your small block engine. Muscle series valve covers and accessories can be found anywhere Holley products are sold.