I have a 49 1-ton pickup, I switched the 5.14 to 4.56 The engine sounds like it's screaming at 50 M.P.H. I need to go with a 4.10 or 4.11 I've heard I can get this from a 72 3/4 ton chevy, What other years had this rear end? Thank you. Terry

Last edited by 491ton; 07/14/2011 3:55 PM.
49 chevy 1-ton. It is a work in progress but it's getting close. 49 1 Ton Pics