robin.m.bryan Posted March 9, 2014 Report Share Posted March 9, 2014 Hey Ratsun folks, I have a 1985 720 with an SD22. The 5-speed manual transmission blew on me while I was driving int he middle of nowhere in -40 this winter, not a fun night. Luckly I actually have an SD25 with a 4-speed transmission attached that I bought just before the tranny blew. Is the 4-speed tranny on the SD25 compatible with my SD22? If I have time I'll switch to the 2.5L as well but i may not. Thanks. Quote Link to comment
datzenmike Posted March 9, 2014 Report Share Posted March 9, 2014 Yes as long as it is the same general length. The Diesel 720 motors didn't come with a 4 speed and there were no 4 speed option after November '82 when the SD25 was available. So someone has swapped a diesel front case onto a 4 speed. That's fine it will still work. Quote Link to comment
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