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Ls6 coolant tubes question

This is a discussion on Ls6 coolant tubes question within the External Engine forums, part of the LSx Technical Help Section category; Hey guys, I have a question for those of you that have swapped your ls1 intake to a ls6. Did ...

  1. #1
    Member km346's Avatar
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    Ls6 coolant tubes question

    Hey guys, I have a question for those of you that have swapped your ls1 intake to a ls6. Did you buy the Ls6 steam tubes or did you just grind the fins off the bottom of the Ls6 to make the Ls1 tubes work? I will be doing this swap in the next couple of days and im split between what to do. Ive heard it is better to keep the Ls1 tubes, however i dont know if i feel very comfortable chiseling away my brand new Ls6... Does anyone have any input?

    Thanks
    -Kyle
    Last edited by km346; 02-16-2010 at 04:38 PM.

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    Member lsgunner28's Avatar
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    I bought an LS6 manifold too, read this and there is a link to a set of directions also. and you use a dremel from what ive read. How do you identify an LS6 from an LS1 intake?
    2000 Z28 M6 125,XXX: SLP lid, K&N, 10.4mm Taylor plug wires, Frost Tune, P&P TB, NGK Iridium plugs, Magnaflow Cat back, BMR SFC's and tower brace, TSP LT's and ORY, LS6 intake, MAC Girdle, UMI LCA's and Panhard, LS7 Clutch Kit, so far..

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    Sold: LS1 '85 El Camino ls1camino's Avatar
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    I have done both...when I did my swap (FAST90) I used the LS6 tubes. But when I put a LS6 Intake on my friend's vette, he didn't believe me when I told him he needed new tubes, so we were forced to grind down the fins so his stock tubes could fit.

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    Senior Member tatertot91's Avatar
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    your gonna be fine grinding down the fins
    save yourself a little cash
    LS1 coolant tubes are better anyways

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    Member km346's Avatar
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    Hmm i think Ive decided to just chisel off the tabs.... anyone need a brand new ls6 crossover kit? lol.

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    Member km346's Avatar
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    Now i just need to resist the urge to buy the ls6 valley cover and really hack up my car while i have the intake off. Ughh i get too many ideas when i start reading all these write ups, the pictures make everything look so easy!

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    You've Seen The Butcher GoldenFlame's Avatar
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    I hacked mine up when I did the swap..

    Just follow this picture I used

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    Senior Member tatertot91's Avatar
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    Quote Originally Posted by km346 View Post
    Hmm i think Ive decided to just chisel off the tabs.... anyone need a brand new ls6 crossover kit? lol.
    PM Sent

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    Veteran 0rion's Avatar
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    Quote Originally Posted by km346 View Post
    Hmm i think Ive decided to just chisel off the tabs.... anyone need a brand new ls6 crossover kit? lol.
    put it on ebay....I'm sure there are a bunch of people out there that are willing to do the swap the right way.

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    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by 0rion View Post
    put it on ebay....I'm sure there are a bunch of people out there that are willing to do the swap the right way.
    x2

    those fins are there for a reason. if i remember right, they have to do with cooling.


    the biggest gripe people have about the ls6 pipes compared to the ls1 pipes is that they say number 7 cylinder and 8 will have cooling problems..that is bull anyways. Most of those problems come from improper install of the rear plugs. there was an article explaining all of this..but i cant find it.

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    King 0f n00bz shady milkman's Avatar
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    note that the ls7 coolant lines are very very similar to the ls6 with only the front crossover pipe.

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    Member km346's Avatar
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    well they did come with the intake that i bought... so maybe i will use them. Now im confused.

  13. #13
    Senior Member tatertot91's Avatar
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    Quote Originally Posted by shady milkman View Post
    x2

    those fins are there for a reason. if i remember right, they have to do with cooling.


    the biggest gripe people have about the ls6 pipes compared to the ls1 pipes is that they say number 7 cylinder and 8 will have cooling problems..that is bull anyways. Most of those problems come from improper install of the rear plugs. there was an article explaining all of this..but i cant find it.
    So many people out there grind off the fins and don't have any problems
    Its plastic, cooling isn't a big deal
    Compare it to the aluminum intakes out there, unlike a metal intake it doesn't need coolant running through it to keep it cool
    There is nothing wrong with either setup, the LS1 setup is just a better design

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    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by tatertot91 View Post
    So many people out there grind off the fins and don't have any problems
    Its plastic, cooling isn't a big deal
    Compare it to the aluminum intakes out there, unlike a metal intake it doesn't need coolant running through it to keep it cool
    There is nothing wrong with either setup, the LS1 setup is just a better design
    the ls1 design was so good that they kept it for 3 years and kept the worst design of the ls6 and kept it even today with the ls7 etc.

    i wasnt referring to keeping the intake cool. that gets cool air constantly.

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    Do what's easiest for you to get the install done.

    Either way will work obviously, but the LS1 system provides the opportunity for better bank to bank coolant flow/balance. It may be an added benefit or design redundancy GM decided wasn't necessary and without a doubt it costs GM less for the LS6 system - and the bean counters always win out.

    If it were me, I'd keep the LS1 coolant pipes in play.

  16. #16
    Senior Member tatertot91's Avatar
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    Quote Originally Posted by KP1 View Post
    Do what's easiest for you to get the install done.

    Either way will work obviously, but the LS1 system provides the opportunity for better bank to bank coolant flow/balance. It may be an added benefit or design redundancy GM decided wasn't necessary and without a doubt it costs GM less for the LS6 system - and the bean counters always win out.

    If it were me, I'd keep the LS1 coolant pipes in play.
    x2

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    I am in the middle of doing this, down to cutting my block to add the ls6 valley pan, I have both the ls1 x style steam tube and the newer ls6 steam tubes, the ls6 intake already had the fins chiseled but the issue with using the ls1 x pipe and the ls 6 valley pan in the bumps in the ls6 valley pan. So has anyone used the ls1 x steam pipe with an ls6 valley pan?
    And on all of the steam tubes are those lil plates with orings considered the gaskets, even though the tubes also have some rubber oring looking things on them too?

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    I have used my ls1 steam tubes with a fast intake.

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    if you switch to a LS6 intake valley.......you have to use the LS6 tubes.....right???

  20. #20
    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by sjsingle1 View Post
    if you switch to a LS6 intake valley.......you have to use the LS6 tubes.....right???
    i believe so.

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