Comanche_Fanatic Posted February 19, 2013 Posted February 19, 2013 I have an '86 MJ 4x4 with the 2.8L chevy motor n a 3spd automatic The automatic trans is driving me nuts, i don't like it at all. Is there a manual trans i can swap the auto with? Without changing the motor and 4x4 system.
onlyinajeep726 Posted February 19, 2013 Posted February 19, 2013 You can swap in an AX4 or AX5 from any 4-banger equipped XJ/MJ/YJ. You can find those same two transmissions on another 2.8 equipped XJ or MJ also. The 4-banger uses the same bell housing bolt pattern as Chevy 60° V6's. This also means you can pull a manual transmission out of a Firebird/Camaro that use the 3.4L V6. By the way, if you google "Jeep 2.8L to 3.4L V6 swap", you can find a lot of useful information there on more than just the engine swap itself.
mvusse Posted February 19, 2013 Posted February 19, 2013 Need to swap out your flexplate for a flywheel also.
onlyinajeep726 Posted February 19, 2013 Posted February 19, 2013 Need to swap out your flexplate for a flywheel also. Yes, I forgot to mention that. I'm not sure of all the parts you'll need to complete the tranny swaps, but what I do know is you'll need the flywheel like mvusse mentioned and the pedal configuration brackets, clutch master cylinder, manual tranny cross member and make sure the transfer case spline count is the same (you'll have to research all that, they may likely be the same, I don't honestly know). There's more to the swap than what I mentioned, but that is what I can think of off the top of my head.
Comanche_Fanatic Posted February 19, 2013 Author Posted February 19, 2013 AX5 it is then. Theres an 2.5 MJ w the 5 spd at the junkyard ima grab the parts needed
Comanche_Fanatic Posted February 19, 2013 Author Posted February 19, 2013 The AX5 has to come off a 4x4 Mj or can it be any AX5 to work with my 4x4 system(stock)
onlyinajeep726 Posted February 19, 2013 Posted February 19, 2013 The AX5 has to come off a 4x4 Mj or can it be any AX5 to work with my 4x4 system(stock) I would think either. A 2WD MJ with the AX4 or 5 just has a longer driveshaft to make up for the difference of the transfer case being missing.
Comanche_Fanatic Posted February 19, 2013 Author Posted February 19, 2013 Thats what i thought, i have the short driveshaft n tc on it already. Guess i gotta find the trans
Comanche_Fanatic Posted February 19, 2013 Author Posted February 19, 2013 I may have to cancel that, I'm gonna try and switch out the motor as well.
mvusse Posted February 19, 2013 Posted February 19, 2013 Either way if you want to retain 4wd, the transmission will need to be out of a 4wd. You can't bolt a transfer case to a 2wd transmission.
dasbulliwagen Posted February 20, 2013 Posted February 20, 2013 If I were you, and keeping the 2.8, you should aalso grab the driveshafts from the donor, theres no telling if the auto and the manual shafts are the same length. If its off by just an inch, neither of your existing shafts will work. And you said engine swap now? what are you thinking of going to?
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