650 double pump

Discussion in 'Holley' started by flatire, Sep 13, 2012.

  1. flatire

    flatire Well-Known Member

    what is this gizmo on the front bowl?
    i'm guessing it vents to the intake when the throttle is opened.
    and i'm never wrong, often mistaken.
    i bought it for the 350.


    View attachment 237709
     
  2. doc

    doc Well-Known Member

    Well, i tried to take a look but the thing would not let me.....:spank:
     
  3. Briz

    Briz Founders Club Member

    I cant see your pic but my 800 spared bore has what I assume to be the same vent on top. A little arm the pushes down a "button" when the throttle is open. My little arm broke off after 4 or 5 times taking the bowls off to change jets and it hasn't affected performance.
     

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