Difference in PS pump between ‘68-‘72 GS?

Discussion in 'The Bench' started by Bogus919, May 22, 2019.

  1. Bogus919

    Bogus919 Silver Level contributor

    Hello all, I’m back from my hiatus.... now living in the great state of New Hampshire. Life has been crazy busy up here but I’ve been desperate to get the Buick registered and inspected so I can get it on the road. Unlike Missouri, this car is inspected like everything else on the road so I need to comb through it. Anyway, to my question....

    I need to rebuild my PS pump, it leaks terribly and I haven’t quite decided if I should do it myself , send it out or buy new\refurb’ed. I know it’s an easy task but time is a factor. I have a 68 350 in my 72 GS. The engine is a PO block. I can’t tell if the engine by itself was put into the car or if it included assessories.

    The replacement pumps online all look the same.

    Thanks for your help.
     
  2. hugger

    hugger Well-Known Member

    I feel sure they probably left the 72 pump, it will have a "neck" on it with a round reservoir, the 68-71 have fat short neck, and be attached with two steel brackets and an aluminum bracket and also sit high in the engine bay, the 71+ sits low close to the engine
     
  3. Bogus919

    Bogus919 Silver Level contributor

    Thanks Hugger, I will take a look tonight when I get home.
     
  4. yachtsmanbill

    yachtsmanbill Well-Known Member

    Hmmm... ws

    1. 1964 V6/300 pump and mount didnt fit on the 455

    2. 1970 pump and mount; success!

    3. 1972 Pump on a 1970-71 mount on my '72 455

    z142.jpg

    z150.jpg

    z76.jpg
     

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