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Is it real?

This is a discussion on Is it real? within the Forced Induction forums, part of the LSx Technical Help Section category; I read an article in Hotrod (I believe) that claimed they took what was believed to be a stock 5.3 ...

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    Is it real?

    I read an article in Hotrod (I believe) that claimed they took what was believed to be a stock 5.3 (turned out to be a 4.6) and w/ an inexpensive, ebay twin turbo system, plus minimal upgrades the thing dynos @ over 1000hp. Does this sound accurate? Please, excuse my ignorance, (I saw another member make that request. lol)

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    If somehow it is its a ticking time bomb for sure haha

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    To reach that level of HP on that small of a cubic inch motor you're going to have to run a lot of boost. With high amounts of psi you're going to have to run forged components. It's definitely possible, but it's definitely not the norm.

    Just guessing, I would say that you would have to be somewhere in the 18-20lbs of boost range, which is a lot.

    Minimal upgrades I think would be a big understatement. A car with that much power would be worthless on the street or strip without a ton of upgrades to the clutch, trans, entire drive train, tires, suspension, etc.

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    is it possible? yes.

    is it a good idea for anything but "I wonder if?" ? no

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    Moderator 35th-ANV-SS's Avatar
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    There is another thread about this on here. The engine made 60 passes on 27psi (1205 HP). No problems. The article is in GM High Performance I believe.

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    old timer blue02Z's Avatar
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    4.6? they confused a 5.3 with a ford ohc engine? sure it wasnt a 4.8? still basically the same as the 5.3

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    Moderator 35th-ANV-SS's Avatar
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    It was the 4.8L, which I believe is from a 2000 truck.

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    Veteran 0rion's Avatar
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    it's definitely possible......local guy here ran 18-20psi on a stock blocked LS2 for a long time using ebay turbo's. Problem is the turbo's themselves are piles of shit so plan on changing them out on a regular basis.

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    dbl clutch'n like i shld WICKEDLS1's Avatar
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    Yes hotrod did do that in one of their builds but it wasnt anywhere near 1000hp i believe it was more like 500-600 but still on HIGH boost and as stated before its a ticking time bomb

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    Moderator 35th-ANV-SS's Avatar
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    Quote Originally Posted by WICKEDLS1 View Post
    Yes hotrod did do that in one of their builds but it wasnt anywhere near 1000hp i believe it was more like 500-600 but still on HIGH boost and as stated before its a ticking time bomb
    The article is in another thread on here. It was 1205HP with 27psi with twin 76mm turbos. Engine made 60 passes without any damage.

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    dbl clutch'n like i shld WICKEDLS1's Avatar
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    Quote Originally Posted by 35th-ANV-SS View Post
    The article is in another thread on here. It was 1205HP with 27psi with twin 76mm turbos. Engine made 60 passes without any damage.
    hmm may be thinking of something else but thats INSANE

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