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Cj-5 Transmissions By The Year

Discussion in 'Early CJ5 and CJ6 Tech' started by Jeremy Knakmuhs, Nov 6, 2018.

  1. Nov 6, 2018
    Jeremy Knakmuhs

    Jeremy Knakmuhs Jknakmuhs

    Parker, CO
    Joined:
    Sep 16, 2016
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    49
    I have a 68' CJ-5 with the Buick V-6. Has some leaks in the transmission and started looking around at parts to get this fixed. I have found on numerous sites varying years at what transmission might have been put in this Jeep. KaiserWillys.com says that it should be a T-90, Herm The Overdrive Guy lists the T-86 in the 67' and 68' models with the V-6, but Novak states the T-14 replaced the T-86 in 67'. I was curious if anyone knew more about what transmissions were installed in different years. I know the easiest way is to remove the plate at the shifter and check but was curious since I have found differences.

    Thanks,
     
  2. Nov 6, 2018
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Post Falls, ID
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    If your first gear is synchronized, it's a T-14. If not, it's a T-86. The T-90 was never offered behind the V-6 from the factory. If it's there, someone swapped it in.
     
  3. Nov 6, 2018
    Jeremy Knakmuhs

    Jeremy Knakmuhs Jknakmuhs

    Parker, CO
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    Consider me dumb with terms, but what do you mean by synchronized?
     
  4. Nov 6, 2018
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Post Falls, ID
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    There are no dumb questions. (y)
    Can you shift into first at any speed without it grinding (like you can into second and third)? That's synchronized.
     
  5. Nov 6, 2018
    Jeremy Knakmuhs

    Jeremy Knakmuhs Jknakmuhs

    Parker, CO
    Joined:
    Sep 16, 2016
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    Thank you, that makes perfect sense and lowers stress. Seems like it can be hard to find parts for a T-86. T-14's I have found much easier. Thanks for the info
     
  6. Nov 6, 2018
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Medford Mass USA
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    Look at the side of the transmission. The T-86 will have "T86" cast-in to the driver's side of the case. A T-14 will have "T14" or "1302".

    The T-86 is very similar to the T-90 transmission. You can take a T-86 apart, and replace all the internal parts with T-90 parts. For many owners with broken T-86s, this is a way to salvage their transmissions when original T-86 gears are not available. Herm sells these transmissions complete, if you don't want to replace the gears yourself T-86 Transmissions | Herm The Overdrive Guy
     
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  7. Nov 6, 2018
    TIm E

    TIm E Aggressively average 2021 Sponsor 2020 Sponsor

    NW Arkansas
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    Solid advice above, best to verify with the stamping on the case. I believe by 68, the T14 was the only offering behind the V6...assuming the original transmission is in there. T86 is rare since it was introduced in 66 and phased out mid-year 67 in lieu of the T14.
     
  8. Nov 6, 2018
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member 2021 Sponsor 2020 Sponsor

    Bozeman, MT
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    At least that means it still has fluid in it! Transmissions do leak - but the D18 transfer case is well known for leaks so you may want to make sure its the transmission and not the transfer case. Maybe because I believe Novak, but I would think a 68 is a T14 - as tim says, it you can get it clean enough - you should be able to find the T14 stamped in the case.
     
  9. Nov 6, 2018
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Medford Mass USA
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    Most complaints about these transmissions would be noise, or popping out of gear, or grinding when shifting. Mechanical issues. As James stated, usually the Dana 18 transfer case leaks gear oil badly, but not the transmission.

    If oil is dripping from the bell housing it's more likely engine oil than transmission oil. A 50 yo motor is very likely to need a rear main seal, which will come out of the back of the engine and drip off the bell housing bottom. Might look like it's coming from the transmission. A Borg-Warner 3-speed with a top shifter does not have that many places to leak from ... the static oil level is pretty low in the transmission, below the level of any seals. Take some oil on your fingers and smell it. Compare it to the engine dipstick smell, and put your finger in the fill plug of the transmission to get a bit of oil and smell that. Gear oil smells way different from engine oil.
     
  10. Nov 6, 2018
    jeep2003

    jeep2003 Well-Known Member

    Upstate NY
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    The t-86 has a distinct bend in the shifter stalk. An easy way to identify them.
     
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  11. Nov 7, 2018
    Hellion

    Hellion Regurgitated

    Eastern TN
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    My '68 with V6 has the T86AA trans. It's titled as a '68. The plot thickens. [​IMG]

    Take off the floorplate and look at the driver's side of the transmission below the shifter plate. If it's a T86AA, it will be cast into it right there.
     
  12. Nov 7, 2018
    jeep2003

    jeep2003 Well-Known Member

    Upstate NY
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    So is mine but i think it was built in 67. Yours probably was aswell
     
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