Posted by Clint Dixon [65.125.107.130] on Wednesday, May 12, 2010 at 12:40:23 :
In Reply to: Stock Transmission posted by Jed [76.205.222.173] on Wednesday, May 12, 2010 at 11:40:00 :
There are no number designations on the straight cut gear New Process transmissions used before the NP420. The only designations are "Up-To Type" and "After Type." Your truck should have the Up-To type. Check out the information on T137.com. Thanks to Phil for hosting the information there.
Junior