Edelbrock part #9636 Pushrods are designed for small-block Ford 351W V-8 engine applications. These one-piece pushrods are manufactured from high quality 4130 Chromoly steel tubing that has been surface hardened for maximum durability. They have precise formed wedged ends for a high quality fit with the cup seats. A black oxide finish is added for corrosion resistance. Pushrod Specifications: - Outside Diameter: 5/16" - Length: 8.150"