john in KY Posted July 26, 2017 Share Posted July 26, 2017 Supposedly a 93/94 FWD transmission will not interchange with a 92 FWD. Would like to know why. The only reason I can think is a difference in the CV axles. From what I have researched, if the transmission is AWD, then the 92/93/94 all interchange. If AWD transmissions interchange, why not the FWDs? Link to comment Share on other sites More sharing options...
Numbchux Posted July 26, 2017 Share Posted July 26, 2017 CV axles are definitely the same. Only '93-94 FWD MT Imprezas got the 23-spline axles I know there were several gear ratio changes, (not just axle ratio, but 1-4 as well) in those years. And that's all it takes to kick something out of a parts interchange (car-part, etc.) search. I see they list '90-'91 Legacy, '92 Legacy, '93-'94 Legacy, and '93-'95 Impreza as all being different for FWD, non-turbo ATs. So I'm not sure exactly, but I bet they'd still work just fine. Link to comment Share on other sites More sharing options...
idosubaru Posted July 26, 2017 Share Posted July 26, 2017 i looked this up last night but don't see a reply...weird guess it got lost or i fell asleep...anyway, i looked online subaru parts places. john.c.e says 90-91 have a 4.11 final drive front diff and 92-94 have 3.9: http://www.ultimatesubaru.org/forum/topic/119346-transmission-interchange/ which doesn't matter for FWD as there's no rear diff to match. i looked up FWD and AWD 90-93 stuff on subaru online parts sites and didn't see anything to detract me from thinking they wouldn't interchange - although the listings and part numbers are convoluted and hard to make sense of. Link to comment Share on other sites More sharing options...
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