350 Power Steering belt size

Discussion in 'V-8 Buick Powered Regals' started by Orlando M, Jun 30, 2020.

  1. Orlando M

    Orlando M Member

    What size is that actual size for this pulley with the crankshaft? I have tried 37-x/x range up to the gates 7140. It’s still loose for some reason. I’m trying to figure out what’s the size I need since the belt has a looseness to it. The power steering is 5-5/8 and the crank is the 231 which is the 3 groove. It’s loose on the 1st and 2nd groove. I’m currently doing a swap from 231 to 350. Any belt numbers would help. Thanks.
     
  2. Mart

    Mart Gold level member

    For a stock pulley 71 350 with a/c.
    Alt & pwr strg.
    If you have mismatched pulley combos, wrap a rope around and measure length. Go to the auto parts store....
     

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    Last edited: Jun 30, 2020
  3. Orlando M

    Orlando M Member

    I did both. I got 40 in in diameter for it and went with 41 and it was loose. And then the auto parts store doesn’t know or help as much since they need particular year and make. I ordered the block rather than me finding one. But my pulleys I guess are bigger because they 5-5/8s for the power steering pump being bigger.
     
  4. 1987Regal

    1987Regal Well-Known Member

    Last edited: Jul 3, 2020
    Orlando M likes this.
  5. 1987Regal

    1987Regal Well-Known Member

    Taking these pictures I see I'm missing a bolt on the adjustment
     

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    Orlando M likes this.
  6. Orlando M

    Orlando M Member

    Thanks this helps a lot!
     

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