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  • underdrive ?

    will an underdrive pulley increase the output of my waterpump at higher rpm's?
    The Official Rotating Mass Nazi

  • #2
    Re: underdrive ?

    Originally posted by dohcfriend
    will an underdrive pulley increase the output of my waterpump at higher rpm's?
    I think it'd be the opposite.
    Brian

    '95 Cutlass Supreme- "The Rig"
    3400 SFI V6, 4T60e
    Comp Cam grind, LS6 valve springs, OBD2 swap, Tuned
    2.5" DP/ 2.5" dual exh/ Magnaflow Cat/ crap mufflers/ 3500 Intake manifold/ 65mm TB
    TGP steering Rack/ 34mm Sway Bar/Vert STB/ KYB GR2's

    '08 Chevy Trailblazer SWB 1LT "Smart Package"- LH6 5.3L V8/4L60e, A4WD

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    • #3
      if you put an underdrive on the waterpump, yes. If you put a UD on the crank, it will decrease the amount that the water pump turns, but you should be just fine with the FFP.
      92 cutty auto with a 97 3.4

      93 convert with 3.4

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      • #4
        thanx.
        The Official Rotating Mass Nazi

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        • #5
          It does yield a noticable response. I might get one later and see for myself.
          I am back

          Mechanical/Service Technican

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