Verifying 1971 GS 350/455

Discussion in 'The "Paper Trail"' started by BQUICK, Oct 29, 2019.

  1. BQUICK

    BQUICK Well-Known Member

    Can't find the thread but Duane was saying big blocks had 4 holes in frame behind license plate. My GS455 only has the 2 round ones and it has a T400 with the VIN on it so I'm sure it's a 455 car.
    Any other possible indicators other than steering joint?
     
  2. Duane

    Duane Member

    I don't know about the holes, but the Big Block 71 frames have a different part number/Letter code then the Small Block frames.
    Duane
     
  3. tdacton

    tdacton Gold Level Contributor

    Here is my Flint built GS BB frame #.
    Troy Frame rail PN.jpeg
     
  4. Buickone

    Buickone Founders Club Member

    I know mines a 72, but the BA code is what identifies it as a BB frame, Flint built.
     

    Attached Files:

  5. MRP

    MRP New Member

    This is a photo of my 1971 455 car frame, you should find some kind of numbers/letters like this if you look under the left rear 1/4 panel behind the tire, they should be on the outside of the frame rail. Good luck.
     

    Attached Files:

  6. BQUICK

    BQUICK Well-Known Member

    Here's mine DSCN4570.JPG
     
  7. tdacton

    tdacton Gold Level Contributor

    That is cool! Did you notice yours and mine came out of the exact same batch?
    Troy
     
    thepartsman likes this.
  8. BQUICK

    BQUICK Well-Known Member

    Cool!
    So 1237139 is BB frame?
     
  9. tdacton

    tdacton Gold Level Contributor

  10. BQUICK

    BQUICK Well-Known Member

    I know my car is a 455 car but nice to have more evidence than the T400 with VIN since it is a 1971.....
     

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