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    Thread: power valve

    1. 04-22-2007 #1
      fastgraf
      fastgraf is offline New to Pro-Touring
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      power valve

      what size power valve should I be using on a 750 demon with 10" manifold vacuum?

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    3. 04-22-2007 #2
      Shaker455's Avatar
      Shaker455
      Shaker455 is offline Starting The Transformation
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      See how much vac you have in gear with your foot on the brake.

      Your PV should be 1.5" to 2." lower than what you have in gear
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    4. 05-01-2007 #3
      MonzaRacer's Avatar
      MonzaRacer
      MonzaRacer is offline Registered User
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      Yeah for the most part I have been using anywhere from 3.5 to 5.0 and so far the 4.0/4.5 are best for street with moderate cams(I have an LT4 HOT roller).
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