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Thread: Geartrain noise in 4L60E second gear causing "knock" retard

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  1. #4
    Fuel Injected!
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    Quote Originally Posted by EagleMark View Post
    Moved your thread for you. Wish I had an anwer but never dealt with this before.

    Can you actually here some noise in second gear?
    I appreciate you relocating this for me. Posting from my phone gets me sometimes.

    Yes I can, sounds almost like a quiet gear drive the way it whines.

    I messed around with it today and it responded very well to a Ramjet timing map. 30-31* total advance, 11.8:1 PE air/fuel ratio and 93 octane gasoline turned it into a rocket compared to how it was running. On another note....I am out of fuel at WOT now. Guess that TPI is going on sooner than later

    The weirdest part of it all is sometimes it will retard the timing and other times it won't. I am seeing the same amount of retard at 18* timing as I am at 30-31*. I attached a few screen shots of 1st and 2nd gear runs and a WOT 1-2 shift.
    Attached Images Attached Images
    Last edited by Fast355; 04-13-2013 at 11:46 PM.

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