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    Author Topic: ported vacuum signal  (Read 566 times)

    Offline CUDA JAS

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    ported vacuum signal
    « on: August 16, 2011 - 09:59:59 PM »
    The ported vacuum port on my holley 3310 (750 vac seconday) has a vacuum signal at idle.

    Is this a sign that the throttle blades are open too far or a sign of something else?

    Jason
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    74 'cuda 360/727



    Gearhead: car nut, automotive enthusiast, one who loves hot rods, muscle cars, hot trucks, burnin' rubber and neck snapping performance. 

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    Offline Chryco Psycho

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    Re: ported vacuum signal
    « Reply #1 on: August 17, 2011 - 09:21:44 AM »
    the only way to create ported vacuum is air flow though the venturi as it is above the throttle plates , at idle there should not be enough air flow to create vacuum in the venturi , could be an internal problem
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