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Swapping T14 Out For A T15 - Drive Shaft Question

Discussion in 'Intermediate CJ-5/6/7/8' started by Mark Landry, Nov 20, 2019.

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  1. Nov 20, 2019
    Mark Landry

    Mark Landry New Member

    Denver
    Joined:
    Aug 28, 2019
    Messages:
    6
    i have a 74 cj 5 with an amc 304 and, somehow, a t14 transmission that I’m hearing is too weak for the 304.

    My understanding is that a t15 should bolt up without any hassle/adapter/etc, but I’m wondering if I’ll need a shorter rear drive shaft and a longer front one as the t15 is about 1.5 inches longer than the 14?

    Is 1.5 inches a huge deal?
     
  2. Nov 20, 2019
    73 cj5

    73 cj5 Not ready for the junkyard yet Sponsor

    MS
    Joined:
    Jan 10, 2014
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    I have my doubts. There’s a joke in there...
    This might be better suited for the intermediate section.
     
    Jrobz23, Twin2 and 47v6 like this.
  3. Nov 20, 2019
    sterlclan

    sterlclan Member Sponsor

    exploring the...
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    Feb 21, 2009
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    3,042
    Ran a t14 behind a 304 for a few years it is currently in my boys 70 behind his v6 I replaced it with an np435 so cant answer thedriveshaft question. The t14 will last if you are aware of how much throttle you use
     
  4. Nov 20, 2019
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member Sponsor

    Denver, CO
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    Thread moved to intermediate tech...
     
  5. Nov 20, 2019
    zila

    zila I throw poop

    Rock Springs,...
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    Oct 6, 2003
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    Redoing a drive shaft is no big deal. I have had mine modified twice at Six States.. They just need the correct measurement..
     
  6. Nov 20, 2019
    timgr

    timgr Jeepin' Nerd Sponsor 2019 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
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    20,257
    Yes, the T-15 will bolt in. Parts book says the CJ-5 uses the same driveshafts for all 3-speeds in 1974.
     

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