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front/rear axle

Discussion in 'Early CJ5 and CJ6 Tech' started by Shadow, Jul 19, 2010.

  1. Jul 19, 2010
    Shadow

    Shadow Member

    Tallahassee,Florida
    Joined:
    Mar 22, 2010
    Messages:
    62
    I believe my 1962 CJ-5 has different gear ratios under it.
    The rear axle is a Dana 44 with these numbers:
    A 18419
    43-8
    5.38
    U.S. Pat. 2018188
    The front is a Dana 27 I believe with these numbers:
    27A
    292
    081377 2A
    U.S. Pat. 2012188
    It does not have a plate hanging off any off the bolts. The service plug has a
    "W" on it.
    Can somebody tell me what I have. I discovered the problem when I engaged the 4WD the first time and the right rear was dragging.
     
    Shadow, Jul 19, 2010
    #1
  2. Jul 19, 2010
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    Front axle is a 27A as you noted.

    What are the tooth counts on the gears in the front axle?

    It would be most unlikely that they are mismatched. 5.38 gears are quite common for the D27 axle.
     
    sparky, Jul 19, 2010
    #2
  3. Jul 19, 2010
    Shadow

    Shadow Member

    Tallahassee,Florida
    Joined:
    Mar 22, 2010
    Messages:
    62
    Haven't counted the gears yet....just figured this out yesterday. The rear axle came off a separate frame I got when I bought the Jeep. The Jeep had a modern rear end in it but I had just bought all the brake parts for the original sytle rear end so I put the spare in.
     
    Shadow, Jul 19, 2010
    #3
  4. Jul 19, 2010
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
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    9,221
    what is the rear end that came in it?

    the most likely gears for the D27 are 5.38, 4.88, 4.27, 3.73

    There should be numbers stamped on the gear, shouldn't have to count teeth, IIRC.
     
    sparky, Jul 19, 2010
    #4
  5. Jul 19, 2010
    Shadow

    Shadow Member

    Tallahassee,Florida
    Joined:
    Mar 22, 2010
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    62
    Dana 44 with 5.38
     
    Shadow, Jul 19, 2010
    #5
  6. Jul 19, 2010
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
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    9,221
    So you removed a Dana 44 with 5.38s and put another one in?

    I'd still bet that the front axle has 5.38 gears in it...
     
    sparky, Jul 19, 2010
    #6
  7. Jul 19, 2010
    Shadow

    Shadow Member

    Tallahassee,Florida
    Joined:
    Mar 22, 2010
    Messages:
    62
    No... I removed a rear end that had 11" brakes and put in the Willys rear end I had as a spare. I now have a Dana 44 in the rear with 5-38 and the front is a Dana 27
     
    Shadow, Jul 19, 2010
    #7
  8. Jul 19, 2010
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    Sep 23, 2002
    Messages:
    12,530
    You still need to determine what the gear ratio is on the front axle to determine if they will match. Follow Sparky's instructions. Either count the teeth on the ring and pinion or look for the numbers stamped in the ring gear to determine the front axle ring and pinion ratio.
     
    nickmil, Jul 19, 2010
    #8
  9. Jul 20, 2010
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
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    That would be why I asked you what axle came in it. I knew you put the 44 under it, you already said that.
     
    sparky, Jul 20, 2010
    #9
  10. Jul 20, 2010
    Shadow

    Shadow Member

    Tallahassee,Florida
    Joined:
    Mar 22, 2010
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    62
    I have no clue what the rear end I gave away had. If I understand correctly I can pull the cover on the front end and the the pinion gear should have the ratio stamped on it or I can count the teeth.......
     
    Shadow, Jul 20, 2010
    #10
  11. Jul 20, 2010
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
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    4,275
    Correct. It's also a good excuse to pull the cover and change the gear oil. ;)
     
    w3srl, Jul 20, 2010
    #11
  12. Jul 20, 2010
    alex211

    alex211 Member

    Pennsylvania
    Joined:
    Aug 25, 2009
    Messages:
    441
    The ring gear should have a number like 12-41, do some math and you have your axle ratio.
     
    alex211, Jul 20, 2010
    #12
  13. Jul 20, 2010
    Shadow

    Shadow Member

    Tallahassee,Florida
    Joined:
    Mar 22, 2010
    Messages:
    62
    I pulled the cover today and discovered I have a 4-11 front end. Talked to my buddy at "generation Jeep" in Cairo , Georgia he thinks he may have a used 4-11 for me. Thanks for everyone's input.
     
    Shadow, Jul 20, 2010
    #13
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