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intake manifold

This is a discussion on intake manifold within the External Engine forums, part of the LSx Technical Help Section category; i have a 99 ws6 and i know that the 99 and 00 ws6's didnt have the ls6 intake manifold ...

  1. #1
    Member cobrakiller99's Avatar
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    1999 Trans am Ws6

    intake manifold

    i have a 99 ws6 and i know that the 99 and 00 ws6's didnt have the ls6 intake manifold and i was wondering if it is worth the money to upgrade to a ls6 manifold. and also how much power would i gain from the ls6 to the stock one.

  2. #2
    Just me Y2KPewterSS's Avatar
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    Its worth it. It adds 12-15 RWHP over the LS1 intake, plus it gets rid of all the EGR/AIR clutter.
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    I'd rather be bi than full homo!!!!

  3. #3
    Genital Salesmen WEZONIT's Avatar
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    I liked the difference when I added an ls6 intake and ported TB. You can actually hear more air get sucked through it compared to stock. If you plan on modding your car some more I would go for it.

  4. #4
    15 sec. Oh yeah, its fast UTVols98's Avatar
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    Quote Originally Posted by WEZONIT View Post
    I liked the difference when I added an ls6 intake and ported TB. You can actually hear more air get sucked through it compared to stock. If you plan on modding your car some more I would go for it.
    x2. If you plan on more mods, especially H/C, you will need to upgrade your intake manifold. If you can afford it, do the FAST. You will yield better numbers mod for mod.

  5. #5
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    Blue/Green Chameleon
    1999 Firebird

    in cali, would taking the egr away make me fail smog? im hoping to get an ls6 intake too

  6. #6
    r3d dr9n xtreme_rob's Avatar
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    Quote Originally Posted by UTVols98 View Post
    x2. If you plan on more mods, especially H/C, you will need to upgrade your intake manifold. If you can afford it, do the FAST. You will yield better numbers mod for mod.
    Where can you find the FAST manifold?

  7. #7
    r3d dr9n xtreme_rob's Avatar
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    Quote Originally Posted by WEZONIT View Post
    I liked the difference when I added an ls6 intake and ported TB. You can actually hear more air get sucked through it compared to stock. If you plan on modding your car some more I would go for it.
    Is there much difference in porting my stock tb or buying one? And would i have to replace my MAF if i did either?

  8. #8
    rapter34
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    the FAST intake is better and yes if you plan on H/C the car than the FAST 92/92 will net yo atleast 25 over LS6. but if you are not going to HC than FAST is a waste of money. it flows too much for stock motors. and don't waste your money on a 78mm FAST.

  9. #9
    Junior Member ksulkosky's Avatar
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    1999 trans am

    the ls6 is definitley worth the money

  10. #10
    15 sec. Oh yeah, its fast UTVols98's Avatar
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    Yeah, it is the best bang for the buck. If your doing serious mods then a FAST is the best way to go. You, however, do have to fork out around 1200 for the intake and TB. For a cam that spins over 6500 you will need one. The LS6 intake will start to fall flat after 6300 rpms.

    Hey, Rapter. Were you out cruising in Madison the Friday night of the Power Tour down there? I think I saw your car out.

  11. #11
    Just a slow Camaro KING Z28 HAWK's Avatar
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    Quote Originally Posted by xtreme_rob View Post
    Where can you find the FAST manifold?
    http://www.fuelairspark.com/

  12. #12
    rapter34
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    Quote Originally Posted by UTVols98 View Post
    Yeah, it is the best bang for the buck. If your doing serious mods then a FAST is the best way to go. You, however, do have to fork out around 1200 for the intake and TB. For a cam that spins over 6500 you will need one. The LS6 intake will start to fall flat after 6300 rpms.

    Hey, Rapter. Were you out cruising in Madison the Friday night of the Power Tour down there? I think I saw your car out.
    yes sir.

  13. #13
    Senior Member clg82's Avatar
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    Quote Originally Posted by airmaxon1 View Post
    in cali, would taking the egr away make me fail smog? im hoping to get an ls6 intake too
    Yes you will fail the visual, and it will throw a code.

  14. #14
    rapter34
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    you can get an SLP modified one that has the EGR if you want to pass emissions.

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