Identity crisis

Discussion in 'Got gears?' started by Groucho70, Jun 21, 2019.

  1. Groucho70

    Groucho70 1970 Work in progress

    Ok I have a 70 Buick skylark and always assumed it had an 8.2 10 bolt rear end under it. Today I crawled under it and I believe I was wrong. After looking at the rear, see attached photo I believe it has a Chevy 12 bolt under it. Am I correct? I was going to look for the axle stamping but have no idea where to look. Can you identify this axle and give me a clue where to look for the stamping? Thanks.
     

    Attached Files:

    Last edited: Jun 21, 2019
  2. Golden Oldie 65

    Golden Oldie 65 Well-Known Member

    You are correct, it's out of a Chevelle. The axle code in on the front side of the right (passenger) side tube.
     
  3. TrunkMonkey

    TrunkMonkey Well-Known Member

    Yep 12 bolt GM

    Look on the front of the right (passenger) tube for the codes.

    My '68 was a Canadian build with a 12 bolt open.
     
  4. Groucho70

    Groucho70 1970 Work in progress

    YES! Thanks
     
  5. BrianTrick

    BrianTrick Brian Trick

    Just curious. Where was your car built? There seems to be a pattern of some 1970’s coking out of one of the northeast plants with a 12-bolt Chevy. I think it was Framington,Mass.
     
  6. Groucho70

    Groucho70 1970 Work in progress

    Indeed Brian that's where it was manufactured.
     
  7. monzaz

    monzaz Jim

    yoU WILL HAVE A GOOD TIME GETTING THROUGH ALL THAT RUST PROOFING...LOL. Rats sorry for the caps.
    Why would you be upset... you can get parts for the chevy rear...The Buick 8.25 68-70 are a dying breed with fabcraft falling through with gears etc.
     
  8. Mark Demko

    Mark Demko Well-Known Member

    Good rear yah got:p
    Only thing I don't like about Chevy type rears are the C clip axle retention, it DOES make it easy to work on tho:D
     
  9. Electra Bob

    Electra Bob Well-Known Member

    FWIW my 1972 Electra out of Wilmington, Delaware has a 12 bolt open rear end.

    Bob
     
  10. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    Yes, but your rear is not a 12 bolt Chevy rear, it should be the big car 9 3/8 rear. It has a 12 bolt cover, yes.
     
    Last edited: Jun 22, 2019
  11. DasRottweiler

    DasRottweiler -BuickAddict-

    Yup, my 70 came from the Framingham plant with a peg leg hiway geared 12 bolt chevy rear. I replaced it with a 71 8.5 posi with 3.42 gears. Still have the 12 bolt, may do something in the future with it. Jim
     
  12. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    My first Buick, a 1972 Skylark Custom, came with a 12 bolt and 2.56 gears.
     

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