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Unread 11-27-2013, 09:06 AM   #1
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1989 YJ Wrangler 
Join Date: Jul 2013
Location: roberta, ga
Posts: 6
89 to 96 t case swap

will a 96 np231 out of wrangler work with my 89 i know the 96 has vss can i make it machanical and are the splines the same

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Unread 11-27-2013, 09:27 AM   #2
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1989 YJ Wrangler 
Join Date: Apr 2010
Location: paris, Tn
Posts: 40
im not positive but I think the 89 has a 21 spline, and the 96 has a 23 spline, but you can swap out the main shaft its very easy,just becareful with the pump pick up be shure its reinstalled.
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Unread 11-27-2013, 09:47 AM   #3
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1988 YJ Wrangler 
Join Date: Sep 2010
Location: Cortez, Colorado
Posts: 4,372
Your transfer case has a 21 spline input shaft that you could swap into the new transfer case that has a 23 spline. Not sure about the other differences, someone else will chime in. I know it has been done so a little searching and you will figure out what you need to do.

Edit: I see that you have an AX15, so it should be 23 spline already
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