signalb Posted December 2, 2010 Share Posted December 2, 2010 Hello, I have an 86 MJ with the 2.8 60 degree v6 and a904 transmission. That engine is part slug and part cockroach but the slug in it needs to go so I'm planning on upgrading to the 3.4 complete with a weber 38 and headers after Christmas but my transmission has been on the fritz since day one when I got the truck a year ago. I know the A904 came with three different bell housing bolt patterns for Jeep. One of those was for the 2.5 AMC 4 cyl and the 2.8 gm v6 which shared the same bolt pattern. The question I have is if I can find another a904 in the junkyard that was used with the 4 cyl will it be the same transmission as what I have now or are the internals/torque converter different? Basically an a904 that was mated to the 2.8 is impossible to find locally and $100 for a salvage yard tranny is cheaper for me than a full rebuild of my existing one so if one off a 2.5 will work then I'm in business. Thanks, Dave Quote Link to comment Share on other sites More sharing options...
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