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Resolved 91 trans in a 90? - both 22 spline

Posted by ErikTande, Jul 9, 2019

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  1. ErikTande

    ErikTande Proven Member

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    Centennial, Colorado
    I pulled a trans from a 1991 Talon and it has 22 splines like my 90... Can I use it in my 1990 or are there little differences I'm not seeing? I'll post a couple pics later.

    **EDIT** I sold the trans.
     
    Last edited: Jul 11, 2019

    Street Build 681  1

    1997 Eagle Talon TSi AWD
    awd · manual · 2G DSM

    3K  7

    1990 Mitsubishi Eclipse GSX
    13.2 @ 105 · 1G DSM
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  2. 1cleangsx

    1cleangsx Proven Member

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    Cheyenne, Wyoming
    I believe it’s just the 91-94 shifter base/linkage you would have to swap.
     

    Street Build 1K  11

    1990 Mitsubishi Eclipse GSX
    13.2 @ 104.64 · 1G DSM
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  3. Vegas smith

    Vegas smith Proven Member

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    Houston, Texas
    You can definitely use it in your 90. There are a ton of threads about what you need to do the switch. I switched everything to 90 when I switched my 90 in. People will argue that you can just swap over xyz 90 part and it will work.
     

    Street Build 3K  10

    1993 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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  4. ErikTande

    ErikTande Proven Member

    818
    207
    Joined Dec 17, 2012
    Centennial, Colorado

    Street Build 681  1

    1997 Eagle Talon TSi AWD
    awd · manual · 2G DSM

    3K  7

    1990 Mitsubishi Eclipse GSX
    13.2 @ 105 · 1G DSM
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  5. ist dwa

    ist dwa Proven Member

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    Joined Nov 5, 2009
    Centerville, Ohio
    Its very simple, you can use what ever in what ever.

    What needs to match:

    Both trans and Tcase have to be 22 or 23 splines. If you had a 90 Tcase and a 91 Trans all you would have to do is quickly change the output shaft to a 22 in the trans and then that would work or simply just get a 23 spline tcase and it would match the other way.

    There are two shifter brackets on the trans that hold the cables, those two, the shifter cables and the shifter base all must match 90 vs 91 with the corresponding 90/91 trans. Now, you can get creative to turn a 90 or 91 into each other. Just unbolt and swap the select levers between the two trans, that's half the battle. For the shift lever you would weld an extension on a 90 for the longer 91 style shift lever. On a 91 trans you would need to add a 2nd post on the shift lever armature which would make it a 90.
     
  6. twicks69

    twicks69 Supporting Vendor

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    Milwaukee, Wisconsin
    Your shift cable brackets (both of them), shift selector lever and shift cable lever must all be matching.

    Post pictures of both transmissions specifically at the two shift levers in detail, and both of your shift cable bracketry.
     

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    1999 Mitsubishi Eclipse GSX
    9.499 @ 155.00 · 2G DSM
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