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Intake Swap Help!

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Old Jun 12, 2009 | 05:58 PM
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From: hamilton al
Default Intake Swap Help!

I have a 2000 C5 and i am swapping intakes from the ls1 intake to a fast90 intake.here is my problem. I was told that the coolant lines that run under the ls1 intake has to be removed and use the ls line kit from gm to run them in front of the heads and block off the rear lines. I tried to get a kit that would keep the front and rear flowing and not blocking them off but gm doesnt have 1 and only have the front line and block off the rear lines. can the rear lines be bought anywhere and if not will it hurt the motor to have them blocked off such as heating issues or performance etc etc?
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Old Jun 12, 2009 | 08:29 PM
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well considering that all car that came with ls6 intakes dont have that rear line
i would say its not really necessary

but to answer your question i don't believe there is any kit like that,it is not something of major concern to most people
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Old Jun 12, 2009 | 08:39 PM
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Why dont you buy two front pipes and plug the middle line on the one that you put on the back heads or id go as far as cut your old one where they merge in the back and braze it together to make it flow accross the back
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Old Jun 12, 2009 | 10:07 PM
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From: hamilton al
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i am just worried that because the car has the rear lines now and that plugging the rear lines might not help the heads as well and down the road could cause damage in time. is that a fair assumption or is there nothing to worry about and just plug the rear?
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Old Jun 12, 2009 | 11:03 PM
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nothing to worry about, get the blockoffs for the back...
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Old Jun 13, 2009 | 06:15 AM
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From: hamilton al
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Originally Posted by jrob56
nothing to worry about, get the blockoffs for the back...
thanx for the help! i had already bought the kit with the blockoffs but was thinking i got the wrong kit and needed the rear tubes as well.
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Old Jun 13, 2009 | 09:57 AM
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Originally Posted by ItzQuik
thanx for the help! i had already bought the kit with the blockoffs but was thinking i got the wrong kit and needed the rear tubes as well.
nope you are good to go, i used the same kit when i installed my ls6 intake with no problems. good luck with the install.
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Old Jun 13, 2009 | 07:01 PM
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From: hamilton al
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Originally Posted by jrob56
nope you are good to go, i used the same kit when i installed my ls6 intake with no problems. good luck with the install.
thanx bro!
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