Pulleys and brackets

Discussion in 'Street/strip 400/430/455' started by steverw, Jun 8, 2020.

  1. steverw

    steverw Well-Known Member

    So i am building a 455 to put in my GS 350.
    I know i need water pump pulley 1375146.
    Im sure I need the matching crank pulley, dont know the part number.
    Will i also need different brackets? A/C pulley?
    Power steering pump pulley?
    Thank you
    Steve
     
  2. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

  3. hugger

    hugger Well-Known Member

    What fan shroud do you intend on using? That will determine what water pump and pullies you need
     
  4. steverw

    steverw Well-Known Member

    I had planned on using a factory type fan with fan clutch.
    I was told i needed a short pump for a GS, so thats what i bought, from TA Performance.
     
    Last edited: Jun 9, 2020
  5. DasRottweiler

    DasRottweiler -BuickAddict-

    1970 Pulleys without A/C should be:
    Water Pump # 1375141
    Crank # 1375142
    1970 Pulleys with A/C should be:
    Water Pump # 1375146
    Crank # 1375143
    1971 & 72 Without A/C should be:
    Water Pump # 1238156
    Crank # 1235779
    1971 & 72 With A/C should be:
    Water Pump # 1235778
    Crank # 1235777
    71 & 72 Motors with A/C would have the LONG Shaft Water Pump

    Hope this helps......Jim
     
    BillA likes this.
  6. Canadian GS 350

    Canadian GS 350 Well-Known Member

    So the pulleys from my 350 will not work? I’m in the middle of this right now, the brackets from my 1972 GS350 seem to be compatible, the pullies aren’t lining up with a long 455 water pump. I have 455 pulleys, yes they line up with the long 455 water pump.
    I’ve read the brackets are interchangeable.....possibly not the 350 pulleys?
     
  7. steverw

    steverw Well-Known Member

    Ok im converting a 71 GS 350 with air, to 455. TA Performance told me i need a short pump, so i bought one of theirs. I have 1235778 WP pulley, and 1235777 crank pulley. The new water pump is still in the box, i can exchange it if I need to.
    Thanks
    Steve
     
  8. Canadian GS 350

    Canadian GS 350 Well-Known Member

    Steve, I have the same crank pulley, the long pump lines up...short one doesn't. There is a good article about Buick water pumps on Buick Performance web site.
     
  9. steverw

    steverw Well-Known Member

    Ok sorry but again, I am converting a GS 350 WITH air, to a 455. I bought from TA Performance a reproduction fan shroud, and a short water pump. Is this what i need for the build?
    Steve
     
  10. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    The TA 2040D? Yes, short pump. The 2040D is based on a 1970 Fan shroud. Opening is 20". Use an 18"- 7 blade clutch fan. That is what my 1970 GS455 Stage1 uses.
     
  11. Canadian GS 350

    Canadian GS 350 Well-Known Member

    Steve, 1235777 lines up with a long pump on my application - 1972 455 with air
     
  12. Canadian GS 350

    Canadian GS 350 Well-Known Member

    Steve, I just checked, I have a set of 71-72 non air cond pulleys.....looks like they would use a short water pump
     
  13. Dan Gerber

    Dan Gerber Platinum Level Contributor

    Hey Jim... Clarification please:
    In the case of a BBB in a 1971-72 Skylark, the water should be the short shaft version. So, will the noted #1235777 crank pulley (highlighted in red font) still be the correct one?
    The statement regarding the "LONG Shaft Water Pump" confuses me.

    Thanks Jim.
     
  14. DasRottweiler

    DasRottweiler -BuickAddict-

    Twas a copy & paste from , I believe, Todd Miller. I could be wrong, but I got it from this site. I used it to round up the non-ac pulleys for my 70 Skylark. 71 block , but the brackets and pulleys don't know that. If your looking for more information on 71s , I am not your guy, perhaps Todd, if he is indeed the origin, can help. Sorry...JIM
     
    ToddsGS likes this.
  15. hugger

    hugger Well-Known Member

    ALL 71 up cars used the long pump,..the 777 and 778 are the correct pullies for the long pump

    The 67/70 used the short pump,.the long pump didn't even exist then,...that pump used the 5143 and 5146 pullies

    The above is for AC and HD cooling optioned BB cars
     
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  16. Dan Gerber

    Dan Gerber Platinum Level Contributor

    Hmmm... Conflicting information regarding water pumps... TA Performance says short pump for '72 Skylark with a 455. So, like steverw, I purchased (and installed) a TA short water pump and reproduction fan shroud.

    Actually, I believe the lack of the correct crankshaft (for 455 Skylarks with A/C) is my immediate concern.

    Thank you for your response, JIM/DasRottweiler. Looks like I'll have to contact Tod Miller.
     
  17. hugger

    hugger Well-Known Member

    All the cranks are the same

    If that's what TA catalog says its wrong,..

    If you bought the 70 repro fan shroud then for everything to work as I was intended you would need the 5143 and 5146 pullies

    The 778 pulley wont even go on a short pump as it hits the pump body
     
    ToddsGS likes this.
  18. Dan Gerber

    Dan Gerber Platinum Level Contributor

    Hmmm... For now, anyway, my biggest concern is the crankshaft pulley. So, if what you say is true, it's going to make my quest for finding the correct crankshaft pulley much easier. Thanks for the info, hugger.
     
  19. hugger

    hugger Well-Known Member

    I've got plenty of the 777 crank pulleys
     
  20. Dan Gerber

    Dan Gerber Platinum Level Contributor

    Are you willing to sell one (in very good-to-excellent condition) to me? If so, price, etc?
     

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