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LQ4 max egt

This is a discussion on LQ4 max egt within the GM Trucks forums, part of the Vehicle Specific category; I have a 2005 GMC with a 6.0 and a STS turbo system running 7 psi of boost. For this ...

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    LQ4 max egt

    I have a 2005 GMC with a 6.0 and a STS turbo system running 7 psi of boost. For this engine what is the maximum egt you would be comfortable seeing for short term and for long runs up hills( 1 to 2 minutes). According to my wide band O2 I am at about 11:1 fuel ratio. The predetor programmer says the is no knock retard on the timing, and the exhaust temp is 1500 F. Safe or flirting with disaster.

    Thank
    mark rutherford

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    Let me go over some old readins, but i think your in the safe side...Did you mess with the timin during tunin or is it the same?

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    When I am pulling I take some timing out of it.

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    Quote Originally Posted by 5kcstq View Post
    When I am pulling I take some timing out of it.
    What Are you hauling if you have to pull timin? I haul a 22' boat at high speeds and i havent messed with my timin...

    Still lookin for that info...I should be able to get it to you by tomorro, sorry...

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    I am pulling a 30 foot camp trailer, 2 ATV's and other assorted camping gear. The total weight is about 10,000 lbs.

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    I find the numbers...

    Now the book states you could be in the range of 1250 to 1800F.

    But normally the performance engines are within 1350-1550F...

    Now if your headers are glowin after an empty run, fix the fuel / timin...

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