Best YJ tranny?

evilpsych · 10-26-2001, 08:36 PM

ok guys.. Which would you pick if you had to replace the tranny on your yj.. the AX-5 or the AX-15.. what's the diff between the two? i've got the 4.0 liter and i think it's the NP231 xfer case.. stock configuration too..

I-4 · 10-27-2001, 01:20 PM

an ax-5 is a light duty tranny.(good for 4 bangers)the ax-15 is a medium duty tranny.other than a slightly different 1st gear,just strength is the only issue.if there were an easy way to put an ax-15 behind my four cylinder i would.

Nightclaw · 10-28-2001, 07:41 PM

The AX-15 was the standard transmission for 4.0L Wranglers from 1990-1998. The AX-5 was standard on 2.5L models and has a smaller input shaft. '99-present Wranglers come with the New Venture NV-3550, which I have been told is stronger than both the AX-5 and AX-15. The Cadillac trannies for YJ's are of course the NV-4500 and NV-5600, but then you're talking some serious $$$. Oh, but to have an NV-5600... (Mmmmmm - 6-speed w/ granny low 1st. droooolllll....)