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What is this rear end code for 1975

Discussion in 'The Garage' started by stano, Jan 13, 2006.

  1. stano

    stano 1/2 ton status

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    Location:
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    What is this rear end code for 1975? Is there a page for rear end codes?

    RFHG 3422

    The casting number is # 3977323
    The casting date is I 6 4
    It rolls over as a 3.73

    But I have not opened it up to see if it is a open or locking. I thought the code would tell me?

    thank you
    stano
    87 K5
     
  2. goldwing2000

    goldwing2000 Guest

  3. theperfectgarage

    theperfectgarage 1/2 ton status

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    My decoder ring ( which is not always correct ) said it's a 3.73,8.5in.ring gear, 10 in. brakes non locking from a 90 to 91 K series 1/2 ton.
     

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