This cast aluminum competition valve cover was designed for the 18º racing cylinder head but can be used on any small block Chevrolet design engines. The attached flange mount is early Chevrolet small block; and the body of the cover is wider to give room for after-market roller rocker arm and support systems. The Pontiac nameplate is machined in the top of the cover. There are no holes for oil fill or PCV in this cover. These sand cast and age hardened aluminum covers are designed for Pontiac Super Duty aluminum cylinder heads P/N 10045427. The Pontiac logo is cast on the top of each cover. 2 per set. Shipping is not included.