I'm about to convert my 88 MJ to 4x4 and i need to make sure that my 231 t-case out of my 93 xj with a AW4 will bolt up to a AX15 wich i'm planning to buy. It has a ax15 in it right now but its 2wd. If my research is right they're both 23 spline but if they'll bolt together is what i really need to know.

 

depending on year it could be 21 spline
did you check this sight out
you could have three deferent input shaft length

http://www.novak-adapt.com/knowledge...se_gateway.htm

 

If i remember correctly i have a 231 bolted to a AX-15 so i wouldnt see why it wouldnt work......

 

AX-15 should be 23-spline all the way up (I've heard that some of the early ones are not, but I've yet to verify this.)

AW4 should be 23-spline from 1991 forward.

So, sounds like you'll be fine. The pattern of the mounting studs never changed - and it's based on the old D300 "Round" pattern.

 

what yer is the ax15

 

AW4 after 1990 are 23 spline medium length shaft
and the ax15 are short shaft up to 94/95
and long shaft after 95

so you wold need to change your input gear on your tc

 

Do i need to change this gear either way or can i use a ax15 with a long shaft? Is there any way to use my ax15 i have now?

 

you will most likely need to change the gear in the tc

you should contact Novak conversions

 

In theory i could just use my aw4/231 drive train but i was really hoping to keep her a standard.

 

i'll shoot then a e-mail and see what year range they suggest.

 

are you trying to bolt to the 2wd trany cus that is a different deal all together

 

i may have a line on a ax15 and tc out of a yj. he's going all chevy drive train. I think i recall a clocking difference with them though. can anybody confirm this?

 

The YJ/TJ is clocked flatter than the XJ/MJ/ZJ, and you'd have to do some "hammer clearance" work on the transmission tunnel to get it to fit.

However, you can also use the XJ/MJ/ZJ transfer case adapter housing on the TJ/YJ transmission to return it to XJ/MJ/ZJ clocking. Save the TJ adapter - chances are, someone is doing a buildup that doesn't mind hammer or cut-and-weld work on their chassis, and you could get a few bucks for it.