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Thread: poor idle

  1. #1
    Senior Member MASTER BUILDER
    Join Date
    Apr 2009
    B.C. Canada

    poor idle

    A friend of mine just received his new motor 440 mopar edelbrock performer heads, 11:1 comp, not sure on cam specs but I no its the largest solid flat tappet that mopar performance makes, single plane intake with a 1050 dominator.
    The problem is we cant seem to get a decent idle, seems like a lean backfire but burn your eyes out its so rich.
    It clears up nice after mid range right up to max rpm.
    on the way back down it takes a long time to get to idle, then stumbles and stalls, if you try to give it throttle it backfires!

    we changed to a 850 with a little improvement but not much!
    it also takes along time to get to temp.

    I'm thinking cam timing? or vacuum leak?

    Thanks Kirk

    I KNOW............ ITS A MOPAR :? :roll: :? :roll: :? :roll: :?

  2. Racing Junk

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