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How much Boost?

This is a discussion on How much Boost? within the Forced Induction forums, part of the LSx Technical Help Section category; I have a 95 trans am 383 stroker which is runnen at 10.5:1 compression. I just got the sts rear ...

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    Junior Member 95TA383's Avatar
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    Ocean
    1995 Trans Am

    How much Boost?

    I have a 95 trans am 383 stroker which is runnen at 10.5:1 compression. I just got the sts rear mount turbo for it and was wondering how much boost I could safely go up too max. I have forged pistons and a forged crank so let me know what u think thanks. Someone told me to only run 5 but could I go up to 7?

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    ;) Packy's Avatar
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    Black/Screaming Yellow
    99 S/C TA WS6 & 04 Cobra

    I think that you could get away with 7-8 psi, but just make sure you get a good tune on it!
    1999 Trans Am WS6 Black - Forged 346, P1SC (8psi), TH-400, and 12 bolt(3.73's)
    10.29@129 w/1.60 sixty foot

    2004 Screaming Yellow Mustang Cobra - Whipple 2.3, Exhaust, & CCW's...My DD

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    black
    2002 Camaro SS

    a 7 to 8 sounds about right, 10.5:1 is stock compression on an ls1 and they can take 9pounds

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    Member koolaid_kid's Avatar
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    Arrest Me Red
    1997 Formula

    I run 7 at the strip with a stock engine. You should be fine. But you do need a good tune and some extremely sticky tires to handle the power.

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    black
    2002 camaro

    Quote Originally Posted by 2002/black/ss View Post
    a 7 to 8 sounds about right, 10.5:1 is stock compression on an ls1 and they can take 9pounds
    10.1 is stock on an LS1 and without intercooling 5#'s is the most you want to use at that compression. I'm not sure about the LT1's though.

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