Is this for real? '70 12 bolt

Discussion in 'Auctions and Online Sales' started by hwprouty, Mar 16, 2021.

  1. hwprouty

    hwprouty Member

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    Yep, you are correct!
    I suppose I could check the # on it...
    I've owned the car since 1980 or so and knew the second owner ....
     
  2. badazz81z28

    badazz81z28 Veteran Member

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    agree, same could be said about the casting numbers on the housing as well. It would have to be a meticulous build to have that standard. If the housing dates are that important, so will the guts. Look at Ron’s build, he is looking for date coded ball joints and rotors.
     
  3. Gary S

    Gary S Administrator Lifetime Gold Member

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    Check the code on it. If it is a 3.73, it would be from a Z28. If it is a 4.10, it could be from a Z28 or a L78. If it is a 3.55, it is from a L78. If it is a 3.31, it is from a SS396/L34 or from a SS350. If it is a 3.07, it is from a SS350.
    But, this axle was also used by Pontiac on the Trans Am and the Formula so it could be from one of them instead of a Camaro.
     
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  4. hwprouty

    hwprouty Member

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    I'll check it out, it had 3.73's as I recall.
    With the 4 speed it didn't feel like 3.31!
     
  5. Rosster

    Rosster Veteran Member Gold Member

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    For camaros, 3.73 will have COZ stamped on it, 4:10s are COO. Not sure whether pontiacs used the same codes or not (unlikely)
     
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  6. hwprouty

    hwprouty Member

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    Now I'm wanting to head out to the shop and check the #'s!
    But stuck here at work 'til 2AM! Oh well double time makes me smile!
     
  7. hwprouty

    hwprouty Member

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    Can't believe I found the energy to get the #'s, didn't get home til 3 am and am heading back to work now......
    The #'s on the housing ( & letters! ): C OW 0210 G2
    Any help on what this is from?
     
  8. Rosster

    Rosster Veteran Member Gold Member

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    It’s a 3.35 non posi. Likely out of a SS 350 with 4 speed.
     
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  9. Gary S

    Gary S Administrator Lifetime Gold Member

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    There was no 3.35 offered. There was a 3.31, and it was used on SS350 4 speed and SS396/L34 with either 4 speed or automatic.
    https://nastyz28.com/camaro/camaro70.html#engine
     
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  10. hwprouty

    hwprouty Member

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    It was not a posi for sure.
    I was told it was a 3.73 but the numbers don't lie I guess!
    It is a 350 4 speed 12 bolt. RS.
    I've never even looked at the body tag, maybe I should....
    Thanks for the replies all!
     

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