Posted 3/9/2008 14:15 (#329845 - in reply to #329268) Subject: Re: Allison mt 654 transmission
southern Illinois
653 has 5 speeds , 643 is a 4 speed. I think on the 653 they added a lower gear, the other four are the same. never heard of a 654 but that dont mean anything.
Allison mt 654 transmission
