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Thread: 2014 Sierra 6.2L - Anyone done a GM hot cam 19309897 and a comp cam 5456 phaser kit?

  1. 03-13-2017 #1
    bcperformance
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    2014 Sierra 6.2L - Anyone done a GM hot cam 19309897 and a comp cam 5456 phaser kit?

    I am tuning this truck for another shop. They did the work and now I can't get it to start when its warm without pressing the accelerator and it idles terrible. Any help would be appreciated.
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  2. 03-13-2017 #2
    bcperformance
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    Part number is wrong for the cam. Should be 19303897.
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  3. 03-14-2017 #3
    Proxses
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    I think there's a mechanical problem. With 5 degrees of overlap at 0.050", I would expect much better than near 80kpa at idle. It's like the valves are being held open. Too long of pushrods, or something.
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  4. 03-14-2017 #4
    bcperformance
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    I did a compression test last night. 150-160 psi both sides.
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  5. 04-13-2017 #5
    bcperformance
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    Camshaft duration was too big. Installed different cam and tuned perfectly.
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