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Narrow Dana 30

Discussion in 'Early CJ5 and CJ6 Tech' started by RVSwisher, Sep 9, 2015.

  1. Sep 9, 2015
    RVSwisher

    RVSwisher Member

    Rochester, MN
    Joined:
    Jul 11, 2006
    Messages:
    99
    I have found a narrow dana 30 out of a 79 CJ7 which has 3.07 gears. I would like to pick this up to possibly put under a flat fender but need to know if it can be regeared to 4.89 to match my flanged dana 44?

    I don't need the axel, as I have a fully rebuild Dana 27 on the project now. Just thinking if I can get it at the right price and it can be easily geared to match my rear, I might pick it up for a future swap.

    What are your thoughts?


    Thanks

    RVS
     
  2. Sep 9, 2015
    Mcruff

    Mcruff Earlycj5 Machinist Sponsor

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    4,904
    Randys ring and pinion has 4:88 gear sets but you will need different carrier as the break is at 3:54.
     
  3. Sep 9, 2015
    jpflat2a

    jpflat2a what's that noise?

    Riverside CA
    Joined:
    Jul 30, 2003
    Messages:
    7,832
    Very easily done.
    Just costs $$.
     
  4. Sep 10, 2015
    windyhill

    windyhill Sponsor Sponsor

    PA
    Joined:
    Nov 4, 2006
    Messages:
    1,404
    stay with your 27
     
  5. Sep 10, 2015
    duffer

    duffer Rodent Power Sponsor 2019 Sponsor

    Bozeman, MT
    Joined:
    Sep 17, 2009
    Messages:
    2,532
    Don't know if everyone has had the same results as myself, but I've busted more stuff in 27's than in 25's. And 30's are a BIG step up from either, both strength wise and in aftermarket support. Like Mike said, you will need another carrier but if you are thinking about a good traction devise, it's a non-issue for the most part.
     
  6. Sep 10, 2015
    nickmil

    nickmil In mothballs. Sponsor

    Happy Valley, OR
    Joined:
    Sep 23, 2002
    Messages:
    11,463
    Actually, you will need a new case. The carrier is the cast part the axle tubes are pressed into.
    The gear ratio break on the case is 2:54(whatever) down to 3:54 and then 3:73 down to 5:38 on most Dana 30's (including CJ units).
     

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