RE: Allison Trans Mt647
That would be a very complicated and expensive change. The MT647 is hydromechanically controlled. The six speed is electronically controlled. You would have to buy the controller, get the right program in it, the shift selector, throttle sensor, wiring harness, the transmission itself, shorten the propshaft, and then figure out how to wire the whole thing up.....and I don't mean just power and ground. Oh, and you'd have to get someone in the Allison network to run an iSCAAN on it to figure out which torque converter you need with the transmission AND the correct axle ratio to use.
You sure you want to try this?
