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Serpentine swap water pump

Discussion in 'The Garage' started by Rolled, Aug 13, 2006.

  1. Rolled

    Rolled 1/2 ton status

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    Location:
    Anchorage, Alaska
    I am swapping in a serpentine belt system in my k20 pretty soon.

    I keep thinking that I read something about a reverse water pump for the setup.

    Is this true? Do I need to buy a different water pump?

    If so, what year, make, and model has the pump I need. I need to tell the ignorant counter person at the parts store something :)
     
  2. mouse

    mouse 1/2 ton status

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    Location:
    Great Falls Mt
    The serp water pump rotates the opposite direction of the older pumps. The fans have the opposite pitch to them as well.
     
  3. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    Location:
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    Serp started in 1989 so tell them you have an 89 blazer. Yes, the fan is different also. Do yourself a huge favor though and buy a new waterpump pulley from the dealer. I just had my old pulley break in half on me and when i bought the new pulley it was superceded with a new number and was made twice as thick and a little different design. The part number is 10085760 and list for 18.55 and if you look at GMpartsdirect.com they sell for 10.55 or something stupid like that.
     

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