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timing

This is a discussion on timing within the Computer & Tuning forums, part of the LSx Technical Help Section category; hi guy,s i have a ? on tha timming for my trucks i have a 5.3 with cam and heads ...

  1. #1
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    Exclamation timing

    hi guy,s i have a ? on tha timming for my trucks i have a 5.3 with cam and heads and 150 shot nos, and curently i em running 20 degrees and i em not making any horsepower on motor what do you guys ricommend

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    Senior Member mrr23's Avatar
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    don't know why you've got the timing set back so far, but i'd put it at 25*. that's where i've had my motors run with 150+ n2o.

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    Quote Originally Posted by mrr23 View Post
    don't know why you've got the timing set back so far, but i'd put it at 25*. that's where i've had my motors run with 150+ n2o.
    I EM GOING TO PUT IT ON 26 OR 27 TO SEE IF I GET MORE HP ON MOTOR WHTA DO YOU THINK , ILL GET MOR OR NOT?

  4. #4
    TunedbyFrost.com Tuner Frost's Avatar
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    Quote Originally Posted by mrr23 View Post
    don't know why you've got the timing set back so far, but i'd put it at 25*. that's where i've had my motors run with 150+ n2o.
    It's not low for a truck cal though really, remember they leave the factory ready to go on 87 octane and they have small chambered heads (5.3L).

    Poster, if you move the timing up to 26-27 you will likely not find a lot more than a bunck of knock

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    or could it b dat a have to big of a head on my 5.3 i have 853 full cnc por 205in/160ex 240 ranners?

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    TunedbyFrost.com Tuner Frost's Avatar
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    well I take back what I said then... sounds pretty low for that setup

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    TunedByFrost supporter rel3rd's Avatar
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    Quote Originally Posted by Frost View Post
    It's not low for a truck cal though really, remember they leave the factory ready to go on 87 octane
    FWIW on my newly acquired 2002 5.3 Chevy Silverado LT, the factory WOT High Octane timing is 11 degrees, and the Low Octane is 8, feathering down to 6...lol...

    Needless to say, I'll be buying the needed HPTuners license for this one too.
    2002 Silverado Z71 ECSB HPTuners tuned by yours truly
    2000 Pontiac Trans Am WS6 6.0, 4L80E, Rear mount Turbo, etc...
    webpage: http://www.fquick.com/rel3rd/

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    TunedbyFrost.com Tuner Frost's Avatar
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    Quote Originally Posted by rel3rd View Post
    FWIW on my newly acquired 2002 5.3 Chevy Silverado LT, the factory WOT High Octane timing is 11 degrees, and the Low Octane is 8, feathering down to 6...lol...

    Needless to say, I'll be buying the needed HPTuners license for this one too.


    Hey I have an 02 5.3l too!


  9. #9
    TunedByFrost supporter rel3rd's Avatar
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    Thumbs up

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