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cam swap

  1. DoD Delete question

    Engine Tunes/Mods
    okay to start I have a 06 Trailblazer with the 5.3. I had a DOD lifter fail on me so I did the DOD delete. New PCMofNC Rob style cam LS7 lifters LS7 valley pan replacement new valve springs PCV delete PCMofNC mail order tune everything else is stock. I'm getting some valve train noise after...
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