need to identify rear end

Discussion in 'Transmission & Driveline Topics' started by matthamilton, Dec 11, 2012.

  1. matthamilton

    matthamilton Member

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    hey guys I want to find out the gears and everything I can about my rear end. now on the passengers side in the front I found the code C 0506Cl on the axel. now on the back side of the car near the cover I found numbers
    exactly like this but upside down.
    1 2 3 4 5
    6 7 8 9 0
    above that it says c n I
    or inc. but also upside down.
    the final thing I found was G M 6 7
    now idk what any of this means.
    I just want to rebuild my rear end into a posi. I really am stuck.
    and I have a 70 Camaro base model made in L.A. if that helps.
     
  2. Chris71RS

    Chris71RS Veteran Member

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  3. FatnLow

    FatnLow Veteran Member Lifetime Gold Member

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  4. Chris71RS

    Chris71RS Veteran Member

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    I was also thinking that but then the 0506 should be the date made and the last "c" would be the buffalo NY plant.
     
  5. matthamilton

    matthamilton Member

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    here is exactly what it says I just uncovered more.

    C 0 C 0506C(1) or (I)

    so I guess 2.73: 1??
     
  6. matthamilton

    matthamilton Member

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    for the 0506 I know its the date.
     
  7. FatnLow

    FatnLow Veteran Member Lifetime Gold Member

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    10/4 Now you can start the quest for posi.
     
  8. matthamilton

    matthamilton Member

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    sorry one last question. I want to know what the kit would be called? a rebuild kit, service kit?? I mean I don't want to order the wrong thing and yukons website isn't working for me and Toms differentials also doesn't show up. so I am kind of stuck. if someone is free can they maybe post a link to find these kits for converting the stock rear to a posi.
    10 bolt
    COC 2.73:1 (for gears)
     
  9. Gary S

    Gary S Administrator Lifetime Gold Member

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    A 70 COC coded rear end will be the older 8.2" rear end. You might find it cheaper to get a used 71-81 8.5" posi rear end than trying to put posi in yours. The later 8.5" will also be stronger than your current 8.2".
     
  10. FatnLow

    FatnLow Veteran Member Lifetime Gold Member

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    Matt I'm no pro. A couple things I can see. You will need a different carrier since you have 2 series gears. You need to find a 3 series for a 8.2 rearend. Then posi there are a few others Auburn, Eaton, Yukon, I'm not knowledgeable enough to state which is better. Hopefully biggearhead will pop in and give a few more tips. If originality is not a factor I'd look for a different rearend as Gary specifies.
     

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