Quadrajet Primary Throttle Plate Holes

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  • Roger S.
    Expired
    • June 1, 2003
    • 262
    #1

    Quadrajet Primary Throttle Plate Holes

    Has anyone drilled small holes; 1/16", in the primary throttle plates to allow the car to idle properly and have the idle screws function?

    Roger
    Tags: None
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    • Jack H.
      Extremely Frequent Poster
      • April 1, 1990
      • 9893
      #2
      Drilling Q-Jet

      If memory serves, there's a thread on this in the HP book on Q-Jet available from the NCRS library (store--this site) in their chapter on modifications for race/performance....
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        • Clem Z.
          Expired
          • January 1, 2006
          • 9427
          #3
          Re: Quadrajet Primary Throttle Plate Holes

          yes you can drill the holes but if you have a hot cam you will need to drill the idle/air bleed screws out to about .090 and drill the idle feed restrictions and these are in the doug roe book.
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