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90 transmission in 91

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BoostedTT91

15+ Year Contributor
285
7
Aug 2, 2004
Elysburg, Pennsylvania
I know this has been discussed many times but I can't find a definite answer from searching. I have a 90 22 spline trans with only 60k miles which was supposed to be a 23 spline but turned out to be a 22. What do I need to change for this to work in a 91 besides the tcase. Can I just put 91 shifter arms on it and be done?
 
The correct way is to swap the shifter cables and shifter base over from a 90 too.
 
Like stated above, you will need a 90 tcase with a set of 90 shifter cables with a trans bracket and a shifter. Check your pm box, I can help you out :)
 
Thanks guys after doing some research and checking over the trans again it actually turned out to be a 22 spline 91 trans so I won't have to swap anything
 
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