ok guy here's the deal. got a 49 3600 going on a 1970 chevy 3/4 ton frame with a 472 cad and th400. ok what rearend and what ratio would you run. for the most part it will just be local truck but from time to time will have gooseneck hooked up but I would like to get out and run 60-65 and get the best mpg that's possible

Last edited by ctolar; 02/24/2014 7:28 AM.