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intake manifold??

This is a discussion on intake manifold?? within the GTO forums, part of the Vehicle Specific category; I've been trying to find out if a LS-1 intake from F.A.S.T. or something like that, will fit on a ...

  1. #1
    Member 05gtoautoX's Avatar
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    intake manifold??

    I've been trying to find out if a LS-1 intake from F.A.S.T. or something like that, will fit on a LS-2? and If so do you think there is any power gains from doing so, I just can't find a performance intake for a LS-2.
    2006 impulse blue G.T.O
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    ZEX 125hp wet shot

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    Member 05gtoautoX's Avatar
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    nobody knows huh? damn.

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    Wahoo jung's Avatar
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    Depends on throttle body size. The LS1 FAST would have a 78mm throttle body. The LS2 has a 90.

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    Nitrous Tuner LS2Tuner's Avatar
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    Quote Originally Posted by 05gtoautoX View Post
    nobody knows huh? damn.
    YES IT WILL FIT IF YOU GET THE 90MM MODEL!!

    I have one on my 05 with a LS2 and I did the fuel rails at the same time.
    Your lucky cause they now offer rails for the LS2 I had to fab up the mounts to make them work.
    If you do a search I posted all the info and problems I ran into when doing my change over.
    The vast power band increase is well worth it!!!
    Don't be afraid of the bottle!!! Be afraid of your tune!!!

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    Member 05gtoautoX's Avatar
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    okay okay, why are you yelling? I've got her figured out now and thanks.

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    Nitrous Tuner LS2Tuner's Avatar
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    Not yelling just making sure that people don't get confused!! The prior response made it seem as if you could not run that manifold on a LS2.
    You have to remember there are peolple on here that believe anything they see on here unfortunatly.

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    Wahoo jung's Avatar
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    That is not correct. The LS1 is set up for a 78mm throttle body and the LS2 is setup for a 90 mm. This is why you will find a LS2 FAST is more expensive. A better way of putting it would be if you got a 78mm throttle body. However the LS2 has no throttle cable and an LS1 does.

    part #54001 versus #54003
    LS1 78mm LS2 90mm
    Last edited by jung; 05-07-2007 at 09:03 AM.

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    Nitrous Tuner LS2Tuner's Avatar
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    Here in plane english order the intake model for your application.
    They make more than one version.
    http://www.wilsonmanifolds.com/lsx.html
    And you can convert the drive by wire to the 90mm cable driven throttle body that F.A.S.T offers......BUT anyways thanks for telling me about the different sized throttle bodys.

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    Black Sheep Cliffy's Avatar
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    There is a new book out i think the title is Dyno Proven ls1 thru ls7 performance parts or something like that. Any way one of the "tests" is
    a comparisson between the stock ls2 and then a LS6 Manifold with an 80mm
    T-body and a FAST manifold with the 78mm T-body. The results were somewhat surprising, the smaller t-body and the FAST manifold made the most power, the ls6 manifold bested the ls2 by about 5 ft lbs and 6 or 8 hp.
    I will try to get a copy of the "Test."

    here is something if anyone is interested, it wont actualy show the results but the contents of the chapter. http://www.cartechbooks.com/cartech/...files/5723.pdf

    Sorry i just cut and past the address for the website, i don't know how to make a link.
    Last edited by Cliffy; 05-07-2007 at 10:02 AM. Reason: added info

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    Nitrous Tuner LS2Tuner's Avatar
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    Quote Originally Posted by Cliffy View Post
    There is a new book out i think the title is Dyno Proven ls1 thru ls7 performance parts or something like that. Any way one of the "tests" is
    a comparisson between the stock ls2 and then a LS6 Manifold with an 80mm
    T-body and a FAST manifold with the 78mm T-body. The results were somewhat surprising, the smaller t-body and the FAST manifold made the most power, the ls6 manifold bested the ls2 by about 5 ft lbs and 6 or 8 hp.
    I will try to get a copy of the "Test."

    here is something if anyone is interested, it wont actualy show the results but the contents of the chapter. http://www.cartechbooks.com/cartech/...files/5723.pdf

    Sorry i just cut and past the address for the website, i don't know how to make a link.
    It turns itself into a link after you post it...

    Great link I'm sure fellow members will learn from your link. Here is another one that test the throttle bodys also.
    http://www.cartechbooks.com/vstore/s...=3048&CATID=21

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    Black Sheep Cliffy's Avatar
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    Quote Originally Posted by LS2Tuner View Post
    It turns itself into a link after you post it...

    Great link I'm sure fellow members will learn from your link. Here is another one that test the throttle bodys also.
    http://www.cartechbooks.com/vstore/s...=3048&CATID=21
    Thanks Tuner, I'll figure out this "forum stuff" eventualy.

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    Grand Imperial Wizard Sarge's Avatar
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    Yup....I have the FAST 90mm on the Stroker.....had it on the LS1 before I sent that block into orbit Well worth the investment.

  13. #13
    Quote Originally Posted by Cliffy View Post
    There is a new book out i think the title is Dyno Proven ls1 thru ls7 performance parts or something like that. Any way one of the "tests" is
    a comparisson between the stock ls2 and then a LS6 Manifold with an 80mm
    T-body and a FAST manifold with the 78mm T-body. The results were somewhat surprising, the smaller t-body and the FAST manifold made the most power, the ls6 manifold bested the ls2 by about 5 ft lbs and 6 or 8 hp.
    I will try to get a copy of the "Test."

    here is something if anyone is interested, it wont actualy show the results but the contents of the chapter. http://www.cartechbooks.com/cartech/...files/5723.pdf

    Sorry i just cut and past the address for the website, i don't know how to make a link.
    are you sure this was for the ls2?^^

    i just bought this book, great info, the one they have in there is the FAST 90 mm lsx intake.....it had a gain of 23hp(not rwhp)

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    Member 05gtoautoX's Avatar
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    Quote Originally Posted by LS2Tuner View Post
    Not yelling just making sure that people don't get confused!! The prior response made it seem as if you could not run that manifold on a LS2.
    You have to remember there are peolple on here that believe anything they see on here unfortunatly.
    Thanks that's what I was looking for, and I did realize the ls-2 tb is drive by wire and it's 90mm, and the ls-1 is a 78mm I guess I should have stated it more clearly, I've worked on cars all my life all old ones, so I'm just getting familiarized with the PCM controlled engines, I got the basic jist of it, but sometimes I'd rather ask than be sorry, ya know. OBTW don't worry I don't believe nearly everything I hear.

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    Nitrous Tuner LS2Tuner's Avatar
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    Quote Originally Posted by 05gtoautoX View Post
    Thanks that's what I was looking for, and I did realize the ls-2 tb is drive by wire and it's 90mm, and the ls-1 is a 78mm I guess I should have stated it more clearly, I've worked on cars all my life all old ones, so I'm just getting familiarized with the PCM controlled engines, I got the basic jist of it, but sometimes I'd rather ask than be sorry, ya know. OBTW don't worry I don't believe nearly everything I hear.
    No problem glad to help.
    Remember there is lots of people that are to scared or shy to even post a ? or response on here. They just go on here and read to gain knowledge not knowing any better of whats true and whats not.

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    Black Sheep Cliffy's Avatar
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    Quote Originally Posted by musclecarguy View Post
    are you sure this was for the ls2?^^

    i just bought this book, great info, the one they have in there is the FAST 90 mm lsx intake.....it had a gain of 23hp(not rwhp)

    Yes, check out chapter 2, tests 5 and 8. also keep in ming in is not a bone stock mill either.

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    Wahoo jung's Avatar
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    Quote Originally Posted by 05gtoautoX View Post
    Thanks that's what I was looking for, and I did realize the ls-2 tb is drive by wire and it's 90mm, and the ls-1 is a 78mm I guess I should have stated it more clearly, I've worked on cars all my life all old ones, so I'm just getting familiarized with the PCM controlled engines, I got the basic jist of it, but sometimes I'd rather ask than be sorry, ya know. OBTW don't worry I don't believe nearly everything I hear.
    So let me see if I understand. Your question was just to ask if the LS1 FAST would fit, with no concern to throttle body size? Meaning you were willing to change from a 90mm to a 78mm? (Not to mention the drive by wire issues.) If that was what you were asking then LS2 tuner is correct the FAST will work. Although why you would do this is a mystery.

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    Grand Imperial Wizard Sarge's Avatar
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    Quote Originally Posted by jung View Post
    So let me see if I understand. Your question was just to ask if the LS1 FAST would fit, with no concern to throttle body size? Meaning you were willing to change from a 90mm to a 78mm? (Not to mention the drive by wire issues.) If that was what you were asking then LS2 tuner is correct the FAST will work. Although why you would do this is a mystery.
    I think he is talking about the FAST 90MM Intake. Many LS1's run it with a 90MM TB.

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    Wahoo jung's Avatar
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    Quote Originally Posted by Sarge View Post
    I think he is talking about the FAST 90MM Intake. Many LS1's run it with a 90MM TB.
    Okay.

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    Nitrous Tuner LS2Tuner's Avatar
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    Quote Originally Posted by jung View Post
    So let me see if I understand. Your question was just to ask if the LS1 FAST would fit, with no concern to throttle body size? Meaning you were willing to change from a 90mm to a 78mm? (Not to mention the drive by wire issues.) If that was what you were asking then LS2 tuner is correct the FAST will work. Although why you would do this is a mystery.
    NO ONCE AGAIN I WAS TALKING ABOUT GETTING THE CORRECT PART # FOR THE CORRECT ENGINE!!!
    F.A.S.T. 90mm Intake will work just fine with your stock drive by wire throttle body. I've had mine on for 6 monthes now.
    Altough you could boost torque and lower torque curve by putting the smaller throttle body that would be the only reason to down size.

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