Engine runs rough below 1000 rpm

Discussion in 'The Venerable Q-Jet' started by matt68gs400, Sep 22, 2016.

  1. matt68gs400

    matt68gs400 Well-Known Member

    So, I do need a few parts for this carb. I'm putting on a mild 455 that ran 14.4 this weekend at the track. I'd like to get it down to 14.0 by next year and call it good for a while.

    Just a few parts for carb 7042240:

    -2 idle mixture screws

    -1 power piston spring. The one in the pic below is from another carb because I lost the original spring as it went flying across the garage.

    -1 plastic secondary cam. I currently also have hanger N and CT medium tip rods.

    The other carb had CK long tips and also tried AX. Wasn't able to run them both yet and see how much difference at the track.

    Would anyone be willing to sell me the right parts and give some recommendations?


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    Last edited: Oct 4, 2016
  2. hdpegscraper

    hdpegscraper Well-Known Member

  3. matt68gs400

    matt68gs400 Well-Known Member

    Thank you, I will do that soon. Should have just bought all the parts from him to start with.


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  4. matt68gs400

    matt68gs400 Well-Known Member

    Parts ordered from Cliff today. I also received some really good technical advice. Much appreciated!


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