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AC compressor '72 GS 455 Stage1

Discussion in 'Buick FAQ' started by oldrocka, Feb 23, 2022.

  1. oldrocka

    oldrocka John

    Can someone tell me please, is the AC compressor used in the 455 engine the same as the one used in the 350 engine?

    I need to buy a remanufactured unit.

    Thanks you,
    John
     
    oldrocka, Feb 23, 2022
    #1
  2. jj5794

    jj5794 Well-Known Member

    Just wanted to mention that Alma Products in Alma MI produces brand new OE A6 compressors. They do not sell directly to consumers although, if you contact them, will indicate dealers who retail the product. GM was selling these compressors until some ten years ago. Alma still makes them. Hope this may help.

    Jim Vesely
    ROA # 7437
    BCA # 39477
     
    jj5794, Feb 23, 2022
    #2
    72STAGE1 likes this.
  3. oldrocka

    oldrocka John

    Thank you.
     
    oldrocka, Feb 25, 2022
    #3
  4. jj5794

    jj5794 Well-Known Member

    You are welcome John.

    I ordered a new A6 built by Alma from Omega Environmental Technologies in Texas.

    Best regards,

    Jim
     
    jj5794, Feb 25, 2022
    #4
    oldrocka likes this.
  5. oldrocka

    oldrocka John

    Can I ask you how much it was please?
     
    oldrocka, Feb 26, 2022
    #5
  6. jj5794

    jj5794 Well-Known Member

    Detailed PM sent.
     
    jj5794, Feb 26, 2022
    #6
    oldrocka likes this.
  7. oldrocka

    oldrocka John

    oldrocka, Feb 28, 2022
    #7
  8. Hawken

    Hawken Hawken

    Hey John, hope you and your family are well! It's been a while.

    If memory serves, the A6 compressor is the same on the Stage 1s, but Buick put a larger diameter pulley on its high-performance engines to slow the compressor RPMs down due to expected higher engine RPMs. Look at pics of correctly restored or original survivors and you'll see the size difference. I have also owned original GS 455s with the larger diameter A/C pulley, but never have seen the larger one on a 350 GS.

    The larger pulley should be able to be changed with the A/C clutch.

    The color and style of compressor info decals changed during certain years.
     
    Last edited: Mar 18, 2022
    Hawken, Mar 17, 2022
    #8
  9. oldrocka

    oldrocka John

    Hi Ken,

    Yes it has been a while, we are all good here thanks, how are you and your family?

    I have managed to find the correct compressor and with the correct pulley, it is on its way here.

     
    oldrocka, Mar 17, 2022
    #9
  10. Hawken

    Hawken Hawken

    Good to hear that. It has been a wild last couple of years. If you picked the compressor up from RockAuto ... and that worked well, you might consider adding your vehicles to your account profile and select the settings which will automatically email you when they have a wholesaler which closes-out its inventory 9like older stock for older vehicles) and parts in that close-out match your vehicles in your profile. Sometimes there are simple parts like windshield wipers, belts or hoses, but other times there are ridiculously low-priced other parts like brake pads & shoes ... or starters, etc. ... for cheap.
     
    Hawken, Mar 18, 2022
    #10

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