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Thread: Holley 4412ct

  1. #1

    Default Holley 4412ct

    I've read quite of posts about the changes to make on these carbs, but didn't see anything about the accelerator pump size. It shows a 30 & 50. Going on a 2.3 short rods (5.2) .040 over, stock intake with no modifications, stock valve size & no porting, shaved down to intake bolts. running on 4/10 banked dirt. Thanks - F-9

  2. #2
    Join Date
    Sep 2007
    Posts
    208

    Default

    350 cfm will be more crisp on your engine.

  3. #3
    Join Date
    May 2007
    Location
    Minden, Nevada
    Posts
    1,027

    Default

    Use the 30cc pump and turn it down. Will help with pull over as you really don't need accell pump at rpms. You have enough vacuum coming thru the venturis to create good signal.

  4. #4
    Join Date
    May 2007
    Posts
    178

    Default

    Turn it down? could you explain, I am not sure what that means.

    Thanks

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