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LSX Intake Question

This is a discussion on LSX Intake Question within the Firebird / WS6 forums, part of the Vehicle Specific category; I am currently putting close to 385 HP to the wheels with the following mods Long Tube Headers Y Pipe ...

  1. #1
    Dreamin of a Paint Job... XtinKt's Avatar
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    2000 WS6 Trans Am

    LSX Intake Question

    I am currently putting close to 385 HP to the wheels with the following mods
    Long Tube Headers
    Y Pipe
    Flowmaster
    Mild Comp Cam
    Whisper Lid
    Ported MAF
    K&N
    All the Free Mods
    Dyno Tuned

    My question is this. I'm having a LSX 90mm intake and 90mm Throttle body installed. What kind of HP gains should i expect?

  2. #2
    1SlowTA 00BlueTA's Avatar
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    2000 Trans Am

    10-15ish.

  3. #3
    Dreamin of a Paint Job... XtinKt's Avatar
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    2000 WS6 Trans Am

    I know i have to get rid of the Flowmaster. It was on there when i bought the car.

  4. #4
    WS6 to Z06 TransAmMan's Avatar
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    You'll see a considerable gain from the intake manifold since you have a cam. I would say more then 20. I remember reading some where a guy installed a ls6 intake manifold on his cammed car and he gained up to 30 hp. Where when you install a ls6 intake manifold on a non cammed car you only see a gain of about 8-10.

  5. #5
    Dreamin of a Paint Job... XtinKt's Avatar
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    That deffinately sounds good. I'll post before and after dyno numbers when i have it done.

  6. #6
    member since may 2000 nhraformula's Avatar
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    i dont see you getting much gains.
    if you had a hot cam with aftermarket heads or a stroker motor then it would be a good thing.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

  7. #7
    Senior Member NeeD4SpeeD's Avatar
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    2002 Pontiac Trans AM WS6

    Quote Originally Posted by XtinKt
    I am currently putting close to 385 HP to the wheels with the following mods
    Long Tube Headers
    Y Pipe
    Flowmaster
    Mild Comp Cam
    Whisper Lid
    Ported MAF
    K&N
    All the Free Mods
    Dyno Tuned

    My question is this. I'm having a LSX 90mm intake and 90mm Throttle body installed. What kind of HP gains should i expect?
    I woulda went wit the Nick Williams 90mm TB because the flange on the LSX 90mm tends to get stuck open and can be very loose... The Nick Williams piece is better but since you have it already make sure the throttle flange inside the TB is tight so when you pull back on the cable and the flange opens stick your hand in it (obviously before you put it on the car lol) and MAKE SURE the flange CANT be moved.... Just a little note to make sure you dont have problems in the future!!!
    Bulletproof Performance
    2002 Trans AM WS6 M6 Collectors Edition
    LSX 427 F-1R Procharged Build Underway
    Estimated Finish Date: Summer 2012-2013

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