I have a 1948 3800 chev panel. It has a 235 and as been changed to 12v. It still has the original drive train. I am getting ready to get on the road to a few shows but the truck is pushing at 50mph. What is the best way to get the truck up to 60-65mph. Someone told me you can put a overdrive on the back. Thank for your help.

Last edited by first48; 06/11/2012 2:25 PM.