AMS Racing Hardened Pushrods Set for 2009+ Chrysler Dodge Jeep Ram 5.7L 6.4L Hemi EnginesOur chromemoly 3 8" pushrods feature . 080" wall thickness & are designed for stability under high rpm use. These one piece pushrods are heat treated and feature oil holes that are drilled and chamfered to prevent stress fractures and cracks. A large number of variables are involved in determining the correct length pushrod for your application. Pushrod length is affected by any of the following: Block deck height Head deck height Head stud boss