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How can I tell which locker I need fir my rear-end

Discussion in 'Ram Trucks' started by cookie, Sep 28, 2008.

  1. cookie

    cookie Member
    Messages: 57

    I have an 02 2500 4x4 with a Cummins - I need a posi but I cant tell if it is a Dana 70 with a Dana 80 pot or just an old Dana 70. I may have found a used Dodge limited slip to go in it but I want to make sure it will work b4 I pay for it and ship it here. Any help will be appreciated - thanks - Jason:confused:
     
  2. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 8,584

    Last edited: Sep 28, 2008
  3. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 8,584

    Also,What is a pot?

    Are you going to install it your self?
    I recommend you have a shop do the work seeing as you don't even know what you have.
     
    Last edited: Sep 28, 2008
  4. Mark13

    Mark13 PlowSite Fanatic
    Messages: 5,737

    My understanding was that at least wth the 2nd gen cummins is if it was an auto its a 70, if its a 5 or 6spd its an 80.
     
  5. Milwaukee

    Milwaukee 2000 Club Member
    Messages: 2,180

  6. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 8,584

    what does his comment have to do with it?
    anyway, We are talking about a Dodge 2500 diesel, not a ford f150

    The choices are a DANA/spicer or a AAM differential..
    The more I thing about I bet he has a AAM.
     
    Last edited: Aug 3, 2014
  7. Milwaukee

    Milwaukee 2000 Club Member
    Messages: 2,180

    You misunderstand. I have is 93 F350 not F150. xysport

    You know company do use same rear axles.

    I just give his info not tell him you wrong it have 10.25 sterling.
     
  8. Milwaukee

    Milwaukee 2000 Club Member
    Messages: 2,180

  9. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 8,584

    ??? How does this help him to ID his axle?
    1.He would have to know what he has first.
    2, He just wants to install a limited slip diff, he does not need a complete rear end.


    You need to clean off your diff and look at the cover and on the banjo housing for the identifying marks to be 100% sure what you have
     
    Last edited: Sep 28, 2008
  10. cookie

    cookie Member
    Messages: 57

    wow - its a dodge rear-end. what I call a pot is where the ring and pinion are (generic name 'round here). for some reason dodge used a couple different rear-ends in these trucks. i think i have one of those hybrid axles - dana 80 center or pot, with dana 70 axle tubes but im not sure...
     
  11. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 8,584

    lol we call it a carrier. a pot is something you cook in...lol

    Yea there are a couple of diff's to chose from.
    Still the info should be on your axle.
     
    Last edited: Sep 28, 2008
  12. Mark13

    Mark13 PlowSite Fanatic
    Messages: 5,737

    I forgot that dodge is now using aam 11.5s or something like the dmax has. I think a few have mentioned this already.
     
  13. T-MAN

    T-MAN PlowSite.com Addict
    Messages: 1,363

    Dodge did not start using AAM axles in there trucks till the 03 models. So if its an 02 its a Dana.
     
  14. powerjoke

    powerjoke PlowSite.com Addict
    Messages: 1,341

    it's a DANA 80 ;)

    i like the caption in the pic on post number 6 lmfao

    ALL 3500's and ALL cummin's had DANA 80's

    the only way to get a DANA 70 in a 3/4 was with a V-8 and if i remember right it was an option on a V-10
     
    Last edited: Sep 28, 2008
  15. cookie

    cookie Member
    Messages: 57

    so its a Dana 70 with a Dana 80 carrier?
     
  16. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 8,584

    Did you look under your truck?
     
  17. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    All Cummins powered trucks '94-'02 with a manual transmissions , and all 3500 series trucks used the Dana 80.

    Most gas V8 and V10 2500's as well as Cummins powered 2500 series trucks with automatic transmissions used a Dana 70.

    So cookie, if your trucks a manual you'll have the 80.
    If it's an auto it'll have the 70.

    Now the next question is do you know what gear ratio it's equipped with as there are two different series carriers for a specific ratio range. For example on a Dana 70 the case change is 4.10 and numerically lower...and then 4.56 and numerically higher. Have to know what the one is your looking to purchase..as well as what ratio your truck is equipped with to be sure it's the correct series carrier for the gear ratio you have. If it's the incorrect series for your trucks ratio, it then becomes a 75 lb paper weight.
     
  18. cookie

    cookie Member
    Messages: 57

    Its an auto and she has 3.55 gears.
     
  19. cookie

    cookie Member
    Messages: 57

    Just double checked my e-mail, he says its from a dana 80 with 4.10 gears - so it wont work.....
     
  20. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Nope, not if it's an 80. Keep your eyes out though, these diff's pop up from time to time on the popular for sale sites.