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Tb & Intake

This is a discussion on Tb & Intake within the External Engine forums, part of the LSx Technical Help Section category; I would like to upgrade to add on a new throttle body without taking to big of a hit to ...

  1. #1
    Senior Member SSzoe's Avatar
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    2000 SLP Camaro SS

    Tb & Intake

    I would like to upgrade to add on a new throttle body without taking to big of a hit to the wallet....I am in love with the FAST LSX 90mm tb and intake but WAY to much for me.....I was thinkin simple ls6 intake and maybe a BBK 80 MM throttle body??? Let me know what you guys think and if you know of a place where i could get something cheaper....Already checked ebay and they didnt have anything on there

  2. #2
    Grand Imperial Wizard Sarge's Avatar
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    Now wait a minute here pilgrim...what heads/cam you got there....no reason and put 50lbs of shit in a 30lb bag....you may want to get your stock TB ported and polished.....without proper flowing heads and a decent cam lift you may be "pissing in the wind".....but lets see what you got...and get you hauling ass....

  3. #3
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    I am with Sarge.

    LS6 intake and ported stock TB. At least on a bolt-on car.
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.

  4. #4
    Senior Member Corona-Extra's Avatar
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    Black SVT & Silver WS6
    2003 SVT Cobra & 2002 WS6

    i heard that the FAST 'system' (TB and manifold along with the fuel rails and high fold injectors) really wakes up when you have a nice set of heads and cams. I have them sitting in my closet right now. Just havenít found enough money to buy the heads/cam That true? Oldtimers?
    No replacement for displacement.

    Click for full size

  5. #5
    member since may 2000 nhraformula's Avatar
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    black
    2000 nhra edition formula

    depending on what heads and cam you have, it could be a waste.
    if you have a hot h/c set up, then get the fast system.
    if you have a street/mild h/c, dont bother.
    the fast set up is best for bigger displacement motors
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

  6. #6
    Senior Member Corona-Extra's Avatar
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    Black SVT & Silver WS6
    2003 SVT Cobra & 2002 WS6

    Well, my goals are to eventually bore, stroke, and supercharge her when I get out of collage.

  7. #7
    Grand Imperial Wizard Sarge's Avatar
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    OK...OldTimers huh
    Rule of thumb for increasing top end air flow...ie...intakes...TB's....if you have not modified your head flow numbers by at least 20% your wasting your money...

  8. #8
    WS6 to Z06 TransAmMan's Avatar
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    hmmm so you won't even see any power gains from a ls6 mainfold and BBK 80 mm TB unless you have H/C's?

  9. #9
    Grand Imperial Wizard Sarge's Avatar
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    Mebbe...but you probably would lose a shitload of low end grunt....

  10. #10
    WS6 to Z06 TransAmMan's Avatar
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    wow really?

  11. #11
    Senior Member Corona-Extra's Avatar
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    Black SVT & Silver WS6
    2003 SVT Cobra & 2002 WS6

    soooo.. with boring, stroking, and supercharging, would the FAST set up work... i believe it will... but im jsut wondering your opinion.... old man...

  12. #12
    member since may 2000 nhraformula's Avatar
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    the fast will work with a stock cube block.
    it just wont work better than a ls6 intake.

  13. #13
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    Wink LS6 vs LSX

    Quote Originally Posted by Sarge
    Mebbe...but you probably would lose a shitload of low end grunt....
    Sarge,
    how will the LSX work on a LPE 383 475 HP package with the LG
    long tube headers. I was told by LPE that the LS6 is about right
    and that the 78mm is plenty. Is the LSX a waste of money.??
    we are also going to install 1.8 roller rockers and new springs. The motor
    has about 6000 miles on it. I like the torque that this long rod motor
    makes!
    thanks
    lpe

  14. #14
    Grand Imperial Wizard Sarge's Avatar
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    It would work well....very well....I have the LSX Fast intake on the 402.....and had it on the 346.....

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