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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; Originally Posted by sjsingle1 if you switch to a LS6 intake valley.......you have to use the LS6 tubes.....right??? No. The ...

  1. #21
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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???
    No. The LS6 valley changes the PCV from the valve cover to the valley cover. Won't affect the coolant tubes. You can remove part of the fins under the LS6 intake same as you could with the LS1 valley cover.

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    Quote Originally Posted by KP1 View Post
    No. The LS6 valley changes the PCV from the valve cover to the valley cover. Won't affect the coolant tubes. You can remove part of the fins under the LS6 intake same as you could with the LS1 valley cover.
    he isnt talking about functionality ..he is talking about fitment wise...




    i have been told that the ls1 style coolant pipes will rest on those "bumps" and cause issues with fitment and sealing.


    i personally run the ls6 intake (fins included) , ls6 valley pan with the ls6 coolant lines and have plenty of clearance

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    It's why people remove some of the fins on the bottom of the intake.

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    Quote Originally Posted by KP1 View Post
    It's why people remove some of the fins on the bottom of the intake.
    that is for the flat ls1 style valley cover...so then you will loose even more clearance if the pipes need to go over those humps on the ls6.

    like i said..i dont run the chopped set up..if someone does with the ls6 valley also then it will be obvious that it can be done..but i did some research before i did my swaps and people said that clearance issues could occur with a ls6 style valley cover and ls1 style pipes

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    Obviously, clearance issues could occur. The LS6 intale has indents on the bottom to accomodate the dimples on the valley cover. If you wanted to run the LS1 style coolant lines, you would not let the lines lay on top of the dimples. It just isn't that complicated. I have no doubt that I could make the LS1 coolant tubes work with the LS6 valley cover. If I really had to, I'd remove the raised dimples on the valley cover in the appropriate locations. It's a thick piece of alloy.

    Bottom line, where there's a will, there's a way.

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    Quote Originally Posted by KP1 View Post
    Obviously, clearance issues could occur. The LS6 intale has indents on the bottom to accomodate the dimples on the valley cover. If you wanted to run the LS1 style coolant lines, you would not let the lines lay on top of the dimples. It just isn't that complicated. I have no doubt that I could make the LS1 coolant tubes work with the LS6 valley cover. If I really had to, I'd remove the raised dimples on the valley cover in the appropriate locations. It's a thick piece of alloy.

    Bottom line, where there's a will, there's a way.
    i will agree..where there is a will there is a way...however...those bumps are for the clearance needed for the bolts holding the housing and tubing underneath....so basically all the work to make ls1 coolant lines fit requires massive modification instead of just spending a 50 dollars to do it right.

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    I don't think the ls1 coolant lines will work with a ls6 valley cover.

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    ^^^ good info from all, Im getting ready to do this soon.

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    Quote Originally Posted by KP1 View Post
    Obviously, clearance issues could occur. The LS6 intale has indents on the bottom to accomodate the dimples on the valley cover. If you wanted to run the LS1 style coolant lines, you would not let the lines lay on top of the dimples. It just isn't that complicated. I have no doubt that I could make the LS1 coolant tubes work with the LS6 valley cover. If I really had to, I'd remove the raised dimples on the valley cover in the appropriate locations. It's a thick piece of alloy.

    Bottom line, where there's a will, there's a way.
    Someone on ls1tech did it but instead of grinding down the bumps, he bent the tubes around the bumps using various methods and tools in his toolbox.

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    Quote Originally Posted by 99'CajunFirehawk157 View Post
    Someone on ls1tech did it but instead of grinding down the bumps, he bent the tubes around the bumps using various methods and tools in his toolbox.
    Yup, i saw that, he had a little pipe bender and soldered it somehow. Brazed it or something like that.
    If you really want to do what i'm planning on doing, get 2 front sections that belong on the LS6 intake and meet up with a T at the front. Saw a guy that did that and it looked pretty good.

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    Use the LS6 tubes....and get the LS6 PCV valley cover!!
    Both are great updates to your LS1

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    Quote Originally Posted by Cutlass View Post
    Use the LS6 tubes....and get the LS6 PCV valley cover!!
    Both are great updates to your LS1
    LS6 valley cover ftw
    have yet to install mine though

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    Quote Originally Posted by tatertot91 View Post
    LS6 valley cover ftw
    have yet to install mine though
    it was fun. i like that mod.

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    Underway now...
    Last edited by 99'CajunFirehawk157; 04-04-2010 at 10:45 PM.

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    Quote Originally Posted by 99'CajunFirehawk157 View Post
    Underway now...
    nerve racking right before you make the first cut isnt it

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    Quote Originally Posted by shady milkman View Post
    nerve racking right before you make the first cut isnt it
    YEAH, I looked like a doctor in surgery, sweat pouring down from my head.
    Took about 45 mins and went thru this many items to do so:
    Last edited by 99'CajunFirehawk157; 04-04-2010 at 10:45 PM.

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    ^^^ Will be doing this soon, but will be using the ls1 tubes and intake cover. Hopefully some hp will be seen.

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    i just got the ls6 intake,valley and coolant lines atleast i think its the ls6 lines its a metal line about 10 inches long with a rubber line coming off closer to one end,also it came with what looks like two coolant plugs

  19. #39
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    Quote Originally Posted by garygnu65 View Post
    I have used my ls1 steam tubes with a fast intake.
    You interest me, how did it fit?
    Quote Originally Posted by sjsingle1 View Post
    if you switch to a LS6 intake valley.......you have to use the LS6 tubes.....right???
    Yup, saw a guy once that made his own tubes to bend around all of the nipples on the ls6 valley cover.

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    I just finished this, just get two front ls6 coolant lines, then run 1/4" (have to use fuel line, cant find 1/4" heater hose) hose from back to driver side by fuel rail, tie in the front with 1/4" brass tee to the front ls6 coolant tube, works just like original ls1 "4 end" coolant tube.
    Last edited by 99'CajunFirehawk157; 08-28-2010 at 09:24 PM.

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