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Gear limitations with a Dana 70 SRW '90 Dodge rear end

Discussion in 'The Garage' started by mountainexplorer, Apr 18, 2005.

  1. mountainexplorer

    mountainexplorer 1/2 ton status

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    I've heard there are some undesirable characteristics/limitations to the Dana 70 rears that came under Dodge Cummins trucks. What's the good and bad about these sort of Dana 70's?
     
  2. nvrenuf

    nvrenuf NONE shall pass! Premium Member

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    AFAIK, the only D70 there is an issue with is the one that came with 3.07's in the CTD trucks. From what I've heard a D70 with 3.07's will not accept any other ratio.
     
  3. mountainexplorer

    mountainexplorer 1/2 ton status

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    This one has 3.54 gears. So, most other Dana 70 internals are interchangable?
     
  4. tarussell

    tarussell 1/2 ton status

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    It all depends on the pinion offset if regular gears will interchange easily . There are still ways around it if it is one of those Dana 61 wanabe Dana70's .
    Eventhough it has common 3.54 gears it still might have the odd offset so becareful if you go to buy gears.
    The only other thing I can think of is that it should have 32 spline shafts instead of 35 spline stuff.

    Tom
     

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