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View Full Version : Ax-15 t-case to a tf999?

jeeprollindeep
12-18-2003, 08:29 PM
Will a NP231 transfer case that was on a ax-15 fit on my tf999? THe one i have on mine is a np231 but its on the auto. I was wondering if the ax-15 one will fit?
jeepzilla2003
12-20-2003, 12:19 AM
sorry to break the bad news to you but it WILL NOT fit the tf999. they have a different number of splines on the shaft .
TexasBlake
12-20-2003, 03:30 AM
-=- originally posted by jeepzilla2003 -=-
sorry to break the bad news to you but it WILL NOT fit the tf999. they have a different number of splines on the shaft .


You are incorrect. All YJs and TJs with automatics have 23 spline, just like the AX15. But the automatics' case has a longer output shaft.
Dwest
12-20-2003, 10:23 AM
No, it will not fit, you would have to change the input gear from yours to the one that was on the AX-15.

Does the 999 have overdrive?
Talon
12-20-2003, 07:59 PM
The tf999 is 3 spd. No O/D.
jeeprollindeep
12-21-2003, 08:05 PM
Thats what i thought guys i think the auto has a flush mount, thanks for the info.
Jimbob
12-21-2003, 08:33 PM
Now wait, I thought this would work except for the shaft being a little longer on the Auto (a good machinist can fix this)
Dwest
12-21-2003, 08:49 PM
-=- originally posted by Jimbob -=-
Now wait, I thought this would work except for the shaft being a little longer on the Auto (a good machinist can fix this)

Yes, they can, only he wants to put one out of a standard into one with an auto. If you know a machinist that can stretch the input than he is pretty good.:agree:
jeepzilla2003
12-21-2003, 09:58 PM
ok i was misinformed then . i was told by the guy who sold me my so called "complete rolling chassis" that i could not use my transfer case from my 5 speed for the auto because the splines were different. so i got screwed again.:naw: