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  1. New cam engine runs very poorly

    Engine Tech
    I have a 1986 f250 460 it has a holley sniper tbi with the holley hyperpark ignition and distributor it has flowtech headers no smog pumps or egr weiend stealth intake manifold and top dead center timing gears it was running great but I decided to swap the cam out for a little more power I...
  2. Camshaft selection?

    Engine Tech
    So I wiped a lobe on the sum-3500 cam I installed a couple months ago after what appears to be a lifter failure. It made it through 2 break in cycles and about 10 min of driving. Every thing was good and although on the high side of the tolerance it was in spec. That brings me to needing another...
  3. Running issues

    Engine Tech
    Hello everyone, I'm new to the forum and I'm sorry I'm sure this has been asked before. I just installed a cam in my EFI 460 and I think that it is running lean, I'm still running the Speed Density but I have the Holley Terminator X EFI kit to go on it, but I'm waiting for the TFI adapter to get...
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