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Thread: LT4 ZL1 with 2.3" pulley & headers

  1. #1
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    LT4 ZL1 with 2.3" pulley & headers

    Any advice here car is picking up a bunch of knock retard?
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  2. #2
    Quote Originally Posted by Midnite Magic View Post
    Any advice here car is picking up a bunch of knock retard?
    it's picking a bunch of knock retard.?where idle ?at light cruise? Wide open throttle?

    In any case If your having knock you need to take out some timing until you no longer have knock but I would suggest not doing anything until you post a log and a tune file so it would be easier for an expert tuner to point you in the right direction.

  3. #3
    Senior Tuner Lakegoat's Avatar
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    It must be false. It shows about 5 degrees knock from 5000 to 5200 and only pulls .5 degree timing. It is running a little rich and looks like the timing is a little low for a DI motor. Unless you have bad gas ?
    2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
    2013 Silverado 5.3, 6L80k 8.8

  4. #4
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    stock plugs?
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    Owner/GM Calibrator
    Gen V Specialist - C7 Corvette, Gen6 Camaro & CTS-V3

  5. #5
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    Quote Originally Posted by TriPinTaZ View Post
    stock plugs?
    And to take that thought a bit further... stock plug gap?