Holley flooding badly

Discussion in 'Holley' started by Piston_Freddy, Sep 4, 2011.

  1. Piston_Freddy

    Piston_Freddy Well-Known Member

    http://www.holley.com/0-76750BL.asp



    I had this thing sitting around and decided to install it on my '71 350 engine with adapter plate, because my stock carb needs a rebuild.So I started the car and it idle'd very badly and was impossible to drive.I could not open my eyes when I was at the back of the car.I turnd the 4 corner idle mixture screws all the way in and it still kept running, then I turned the idle screw so the throttle blades would be closed and yes, it was still running! Fuel level was little low on the primary window and in the middle of the window on the secondary bowl. Vacum was lower then 7 but its 18 with the Quadrajet.Bad power valve? What kind I should buy?
     
  2. CJay

    CJay Supercar owner Staff Member

    If it was sitting around, why not just take it apart and throw a rebuild kit on it? Sounds like it could use it.

    If you had 18" of vacuum with the Q-Jet, you should have the same with the Holley.
     
  3. online170

    online170 Well-Known Member

    I agree with Jason.

    If its been sitting on a shelf dry for more than a year, a new gasket kit wont hurt.

    The ODD time the carb will get some crap in the needle and seat and clog it preventing it from closing causing a super high float level. When this happens the fuel will usually spew out the vent tubes.

    You just pulled out the needle and seat and tap it in your hands to dislodge the debris, and blow through it a few times.

    This doesnt sound like your issue though.
     
  4. Piston_Freddy

    Piston_Freddy Well-Known Member

  5. online170

    online170 Well-Known Member

    Sounds like nothing a gasket kit wont fix. The surface looks nice, thats a good sign.
     
  6. Piston_Freddy

    Piston_Freddy Well-Known Member

    Got the gasket and the carb works!



    What would be the normal jet sizes for a stock 350 with TH350 and 2.73? At the moment it has primary(70 something),secondary 80 and 6.5 power valve.

    Thanks!
     

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