T98 T14 With Fhead

Discussion in 'Flat Fender Tech' started by pfmg, May 21, 2017.

  1. May 21, 2017
    pfmg

    pfmg Member

    Billerica Mass
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    Feb 10, 2010
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    my plan on the 3B is to eventually go to a 4speed, granny low behind the fhead. Was planning on t98 but open to any thought. I was at a swap meet yesterday and grabbed this combo. T14, d18 and WARN OD. I was excited when i saw, it because it was pretty sure it was a desirable dana18, with the OD as a bonus. I know there will be some adapters involved. Will any of this work putting a t98 in? Anything of worth on the t14, There is an adapter on the front of it.

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  2. May 21, 2017
    Twin2

    Twin2 wasn't me Sponsor

    Virginia Beach, VA
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    nice score . but OD is for the 10 spline output shaft on the T14 . you would need a OD bull gear with a 6 spline for other transmission
    and yes you should have no trouble selling the T 14 . my thought is get a V6 and use as is
     
  3. May 21, 2017
    timgr

    timgr Jeepin' Nerd Sponsor

    Medford Mass USA
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    Just FYI - the 3-speeds are much smaller than the truck 4-speeds, so if you had seen a T-18 or T-98 in real life, you would not have thought that.

    Here's the T-18 out of my J20 -

    T18out.jpg

    Shown here with an adapter front and back, but this is about the best perspective shot I have. The T-18 or T-98 is both wider and significantly deeper than the 3-speeds. I have installed a T-14 from under a Jeep with my muscles, but no way could I lift a T-18 that way.

    As Ron mentioned, this T-14 will bolt up to the back of a GM bellhousing using the adapter you got with it. If you want to use the whole assembly, adapting it to the 134 would probably be more work than swapping in a GM-pattern engine, whether that was one of the V6s (225 or 231 Buick, 4.3L Chevy) or a 4-cylinder (153 Chevy or 151 Iron Duke or 3.0L Mercruiser)... an AMC 150 could likely be made to work too Swapping a SM420 into a Wrangler

    The T-14 is an easy shifter, and a breeze to drive around town. They are not a particularly strong transmission - members here have broken them in hard service behind the factory V6. If you don't want it, you should be able to sell it online to someone with a 68ish-71 V6 Jeeps that came with it and needs a transmission ...
     
    Last edited: May 21, 2017
  4. May 21, 2017
    oldtime

    oldtime oldtime

    St. Charles,...
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    Next after model selection, the engine is the main decision for virtually every build.
    If you stay with any Willys 134 then the T98-A is by far the most desirable 4 speed to use.
     
  5. May 22, 2017
    John Schiefer

    John Schiefer Fltfndr

    Clive, IA
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    Dec 24, 2010
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    I have this exact combination behind a Dauntless V6 in my CJ2A. 5.38 in a Model 44 and its an awesome combination. Would love to have a T-18, but having too much fun with this setup.

    Fltfndr
     
  6. May 22, 2017
    pfmg

    pfmg Member

    Billerica Mass
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    Feb 10, 2010
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    166
    Thanks Tim, good info. I knew it wasn't a 4 speed, just didn't know what a t 14 went into, or if it was desirable at all. I had a t18 in my CJ and a NV4500 in my YJ, so im used to, and love having the granny low, i was hoping the dana 18 and OD could be added to T98a if and when i find one. I pretty firm on leaving the fhead in the 3B. I thought the DANA 18 with the 1.25 shaft was the "super d18" the one to work with if you found one. Need to go do some more research. I could just buy a T98 from HERM too i guess
     
  7. May 23, 2017
    garage gnome

    garage gnome Rust polisher Sponsor

    Western MA
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    I run a T18 behind my Lhead and it is the best combination ever. I made a custom input shaft and adapter to make it work.

    The "super D18" is when D18 guts are used in a D20 case. The D20 case is stronger than a D18. That one behind the T14 should be a 1.25" shaft.
     
  8. May 25, 2017
    masscj2a

    masscj2a Sponsor Sponsor

    Chester Mass
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    If your not going to use that combo, I know someone who could. :ninja:
     

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