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why would an ls6.....

This is a discussion on why would an ls6..... within the External Engine forums, part of the LSx Technical Help Section category; Why would an ls6 intake add so much horsepower over a stock ls1? I am a little confused as to ...

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    Senior Member clg82's Avatar
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    why would an ls6.....

    Why would an ls6 intake add so much horsepower over a stock ls1? I am a little confused as to why a 2002 ls6 intake from a camaro ss makes more then a stock 2000 trans am ls1 intake. Any ideas?
    2000 Arctic White trans am, ws6 hood, ws6 air box, slp lid, slp smooth bellows, slp loudmouth exhaust,shift kit, rebuilt trans, LS6 intake, 3.73 gears, Shaner S3 p/p throttle body, and a tune . SFC. C6 ZO6 rims 18" in back 17" in front. Drilled and slotted rotors.

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    NY Representative basballny2's Avatar
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    Quote Originally Posted by clg82 View Post
    Why would an ls6 intake add so much horsepower over a stock ls1? I am a little confused as to why a 2002 ls6 intake from a camaro ss makes more then a stock 2000 trans am ls1 intake. Any ideas?
    its not soo much more hp over stock....i believe its only around 5-10.....and the 2001 - 2002 ls1's got the ls6 intake

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    Firebird Encyclopedia 9T8W66's Avatar
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    When installed on a `98-`00 car the LS6 intake show a pretty good gain 10-15 HP because of the more aggresive cam. The difference between a `98-00 LS1 and a `01+ LS1 was 5 HP as rated by GM due to the smaller 6.0 Truck cam used in those later years. Generally al `97-`04 LS1's in stock form make about the same power roughly 345-350 FWHP.
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    NY Representative Vertiviper's Avatar
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    Quote Originally Posted by 9T8W66 View Post
    When installed on a `98-`00 car the LS6 intake show a pretty good gain 10-15 HP because of the more aggresive cam. The difference between a `98-00 LS1 and a `01+ LS1 was 5 HP as rated by GM due to the smaller 6.0 Truck cam used in those later years. Generally al `97-`04 LS1's in stock form make about the same power roughly 345-350 FWHP.
    Thats interesting I never heard of the more agressive stock cam being in the 98-00's...Is there a write up on this somwhere?

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    Firebird Encyclopedia 9T8W66's Avatar
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    Quote Originally Posted by Vertiviper View Post
    Thats interesting I never heard of the more agressive stock cam being in the 98-00's...Is there a write up on this somwhere?
    Actually their have been 4 different factory cams in LS1's throughout the years.
    Heres the specs and what models they were installed in,
    1997-`99 Corvette
    199/207 472/479 117 LSA
    `00 Corvette
    198/209 500/500 115.5 LSA
    `98-`00 F-Body
    198/209 500/500 119.5 LSA
    `01-`04 LS1 All Cars
    196/207 467/479 116 LSA

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    Senior Member clg82's Avatar
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    Quote Originally Posted by 9T8W66 View Post
    Actually their have been 4 different factory cams in LS1's throughout the years.
    Heres the specs and what models they were installed in,
    1997-`99 Corvette
    199/207 472/479 117 LSA
    `00 Corvette
    198/209 500/500 115.5 LSA
    `98-`00 F-Body
    198/209 500/500 119.5 LSA
    `01-`04 LS1 All Cars
    196/207 467/479 116 LSA
    looking at those numbers is it safe to say that the 98-00 had the better cam?

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    The Bandit Wesman's Avatar
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    Quote Originally Posted by clg82 View Post
    looking at those numbers is it safe to say that the 98-00 had the better cam?
    Yep, exactly.

    So when you pair the LS6 intake manifold with the better cam, you have a car that makes more power than both the 98-00's and 01-04's.

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    Senior Member clg82's Avatar
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    Quote Originally Posted by Wesman View Post
    Yep, exactly.

    So when you pair the LS6 intake manifold with the better cam, you have a car that makes more power than both the 98-00's and 01-04's.
    awesome thanks for the help, one more thing i heard that you needed to change the coolant lines when switching to the ls6 intake is this true?

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    The Bandit Wesman's Avatar
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    Quote Originally Posted by clg82 View Post
    awesome thanks for the help, one more thing i heard that you needed to change the coolant lines when switching to the ls6 intake is this true?
    Depends...you can do it in one of two ways.

    You can change the coolant lines to the newer style, which means no lines running longitudinally under the manifold. However, its been said that the newer style doesn't cool as well, and cylinder temps in number 7 and 8 cylinders are higher.

    The other way is to shave the bottom of the manifold with a dremel or other power tool. On the bottom of the manifold it is crosshatched, basically just plastic webbing thats on their when they mold/manufacture it. If you sand all the plastic webbing down to the actual bottom of the manifold, it will install no problem, and clear the coolant lines. You can either cut off all the webbing, as I did, or just cut a path for the coolant lines to rest in. I think this is the best method out of the two.

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    Senior Member clg82's Avatar
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    Quote Originally Posted by Wesman View Post
    Depends...you can do it in one of two ways.

    You can change the coolant lines to the newer style, which means no lines running longitudinally under the manifold. However, its been said that the newer style doesn't cool as well, and cylinder temps in number 7 and 8 cylinders are higher.

    The other way is to shave the bottom of the manifold with a dremel or other power tool. On the bottom of the manifold it is crosshatched, basically just plastic webbing thats on their when they mold/manufacture it. If you sand all the plastic webbing down to the actual bottom of the manifold, it will install no problem, and clear the coolant lines. You can either cut off all the webbing, as I did, or just cut a path for the coolant lines to rest in. I think this is the best method out of the two.
    to be honest i am probably going to change to the new style....would it hurt anything

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    Member jrgswhitels1's Avatar
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    Both intakes are definitely different! There is more power to be had with the LS6 intake than the LS1 intake. Base is much more flat and runners slightly shorter! Couple that with the more aggressive camshaft '98-00 had, they will out run the 2001/02!

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    Senior Member clg82's Avatar
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    Quote Originally Posted by jrgswhitels1 View Post
    Both intakes are definitely different! There is more power to be had with the LS6 intake than the LS1 intake. Base is much more flat and runners slightly shorter! Couple that with the more aggressive camshaft '98-00 had, they will out run the 2001/02!
    would changing the coolant setup hurt anything?

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    Member jrgswhitels1's Avatar
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    Just bolt the intake on dude!! Dont worry about the lines, they'll be all right! Just remember to torque down the bolts in proper sequence. You dont want a vacuum leak!

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    Senior Member clg82's Avatar
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    Quote Originally Posted by jrgswhitels1 View Post
    Just bolt the intake on dude!! Dont worry about the lines, they'll be all right! Just remember to torque down the bolts in proper sequence. You dont want a vacuum leak!
    they'll really be ok, then why do some people say to redo the coolant lines?

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    The Bandit Wesman's Avatar
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    Quote Originally Posted by clg82 View Post
    they'll really be ok, then why do some people say to redo the coolant lines?
    Because you don't want them getting squashed between the valley cover and the bottom of the intake manifold...

    I've never heard of anyone not switching lines or grinding the bottom of the intake slightly, I don't see how you could do it otherwise.

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    Senior Member clg82's Avatar
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    Quote Originally Posted by Wesman View Post
    Because you don't want them getting squashed between the valley cover and the bottom of the intake manifold...

    I've never heard of anyone not switching lines or grinding the bottom of the intake slightly, I don't see how you could do it otherwise.
    good thinkin do you have any idea where a good place to get the new coolant conversion is?

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    The Bandit Wesman's Avatar
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    Quote Originally Posted by clg82 View Post
    good thinkin do you have any idea where a good place to get the new coolant conversion is?
    Almost all of the sponsor sites that sell aftermarket intake manifolds will have the conversion kit for sale.

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    Senior Member clg82's Avatar
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    Quote Originally Posted by Wesman View Post
    Almost all of the sponsor sites that sell aftermarket intake manifolds will have the conversion kit for sale.
    got a link

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    The Bandit Wesman's Avatar
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    Quote Originally Posted by clg82 View Post
    got a link
    http://rpmspeed.com/product_info.php...89aa733cafd896

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    Life in the Fast lane sunsetorangess's Avatar
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    The ls6 intake has more volume, flows better, and doesnt require an egr due to an improved camshaft/controller combination.
    The 2001's and 02's with the ls6 intake also came with the ls6 injectors. As far as grinding down the intake, some were doing it because of the vent lents that lie beneath and it was causing Number 7 cylinder to detonate and run hotter than the rest.
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