[rellick]

What I was told by a vet diesel guy (started 1970 ) unless maybe a little senile in his age, the 8.3 runs the same rpms as the triple nickle and the bell housing is the same, he told me those old allisons are bullet proof, if he is right I shouldnt have to mess around with my gearing. Im not to up on the diesels my experience has been mostley with gas engines. When in doubt I like to talk to the guys with some experience, no sense in trying to reinvent the wheel. And I really dont want to end up with an expensive can of worms. Another reason why I posted this thread!! I know you guys have been messing around with this sort of thing for a while!