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Converting Dauntless 225 to Automatic

Discussion in 'Early CJ5 and CJ6 Tech' started by B_hester, Dec 30, 2015.

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  1. Dec 31, 2015
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Spokane Valley, WA
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    You'd also want to make sure you find an automatic with a lock up torque converter, otherwise you'll negate a lot of the benefit of the OD due to torque converter slippage. TH350C vs. TH350 for example.
     
    ITLKSEZ, Dec 31, 2015
    #21
  2. Dec 31, 2015
    Norcal69

    Norcal69 Out of the box thinker 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    I would imagine that you would want to add power brakes at the same time, or at least an upgrade over the stock brakes.
     
    Norcal69, Dec 31, 2015
    #22
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  3. Dec 31, 2015
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Yes. I'm running a slightly warmed over Dauntless with 4.88's and 3:15 Tera Low gears, TH350 with a ~1600RPM stall converter and with 11" rear drums and front disc, it's almost too much in low range.
     
    Patrick, Dec 31, 2015
    #23
  4. Dec 31, 2015
    Patrick

    Patrick Super Moderator Staff Member

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    Yes. I do like my manual transmissions, but for off road technical stuff, the automatic is a far better choice IMO, with the exception of steep downhill runs.
     
    Patrick, Dec 31, 2015
    #24
  5. Dec 31, 2015
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

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    If you have a lock-up converter, can't you flip a switch and force the converter to stay locked for compression braking? I'd think that would be a useful feature for steep downhill.
     
    timgr, Dec 31, 2015
    #25
  6. Dec 31, 2015
    Patrick

    Patrick Super Moderator Staff Member

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    Yes, and I've though about that. I'd really like a 700R4, but as I said, I just don't think it's feasible without moving the engine forward.
    Mine works well enough as-is, and I'm not sure how hard it would be to find a BOP TH350C
     
    Patrick, Dec 31, 2015
    #26
  7. Dec 31, 2015
    colojeepguy

    colojeepguy Colorado Springs

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    Has anybody run a Warn OD behind an auto? Im wondering about shifting....
     
    colojeepguy, Dec 31, 2015
    #27
  8. Dec 31, 2015
    Oldriginal86

    Oldriginal86 Member

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    When I rebuilt my '61, I put in a SBC and 400 transmission. As Patrick said " driveshaft is short". Mine is about 13" from u-joint centers. My Jeep is my hot rod, not an off-road beast. Really fun to drive. It's in the plans to install a 700R4 to lower the rpm a little. They make adapters and about the same length as a 350.
     
    Oldriginal86, Dec 31, 2015
    #28
  9. Dec 31, 2015
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

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    ITLKSEZ, Dec 31, 2015
    #29
  10. Jan 5, 2016
    Unkel Dale

    Unkel Dale delivery on my Jeep from Ft. Campbell, Ky.

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    PM sent on T86aa
     
    Unkel Dale, Jan 5, 2016
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