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  1. #1

    Join Date
    Jul 2005
    SE Texas

    Impeller pitch ?


    A few questions--

    What do the numbers represent when refering to an impeller's pitch ?

    What is the stock impeller's pitch on our 04 GTX LTD ? 12/20 sound correct ?

    And... one last question--

    Changing the impeller's pitch to one with more low-end accelleration/power--
    Recomended impeller ?
    Will it need a new intake grate ?
    We don't usually ride in rough water.

    Thanks !!


  2. #2

    Join Date
    Jun 2010
    Bumping this question, anyone have an answer about the numbers ?

  3. #3
    West Texas RXP skoepp's Avatar
    Join Date
    Oct 2007
    west texas
    The numbers are the degree angle of the blade. The first number is the leading edge and the second number is the trailering edge. I will post you a pic later, wrenching for a bit.

  4. #4

    Join Date
    Jun 2010
    OK, thanks.

    Do you also know the effect of the the two?
    If i go from 12/20 to 13/20 or a 12/21, what difference am i gonna feel ?

    And then theres the bladenumber...
    Is there also a way to compare 3-blade againt 4-blades ?
    For example a 4-blade 12/20 is eqvivalent with a xx/xx 3-blade ?


  5. #5

  6. #6
    mudbug660's Avatar
    Join Date
    May 2010
    Lafayette, La
    Maybe I could start posting "ttt" on all the threads to get my post count up

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