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coolant pipe under the intake manifold

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Old Dec 21, 2007 | 03:23 PM
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Default coolant pipe under the intake manifold

i recently just bought a 2nd gto , and its been a test bed for stuff , had the original LS1 blow , then had a 408 , now back to a LS1

well it seams to be missing the coolant pipe that ties the left head to the right , and front to back , and feed the tb(which we all know is stupid and not needed) , it has a nitrous plate and 80mm bbk tb any way


my question , is that pipe really needed , when i drove the car home , and took a few friends for a ride , the temps stayed down and never got hot , just seams to me it should be there

so should i add it or leave it alone ?

here is 2 pics of the motor , you can see the cap on the head in the first pic





this is what im missing , not sure which style



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Old Dec 21, 2007 | 04:02 PM
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I cant see from the pics. Is there no coolant lines at all, or do you have the LS6 lines?
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Old Dec 21, 2007 | 04:17 PM
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i can see **** in that picture, if you have the ls6 coolant line it should come out underneath and a little to the right of the tb.
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Old Dec 21, 2007 | 04:32 PM
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2001/2 years capped the rears and used this piece for the front:



the earlier years used the older style which connects all four ports.

Some people say you dont need them, others run their own lines.
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Old Dec 21, 2007 | 04:37 PM
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you can kind of see it in the first picture:
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Old Dec 21, 2007 | 04:46 PM
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yeah sorry the pics arent the best

currently i do not have any lines at all , car seams to run good temp wise , but i live in the middle of hell

its just odd to me that someone would leave the pipe out
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Old Dec 21, 2007 | 05:31 PM
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I'd get some coolant lines on that ASAP just incase.

Its weird that you haven't had problems yet.
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Old Dec 21, 2007 | 05:34 PM
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i circled in red on the picture above. that is either the beginning of the pipe or a plug where the line is supposed to go, it looks like the pipe.
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Old Dec 21, 2007 | 07:53 PM
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it has plugs in it now with AN caps

well ive only driven the car twice , i just got it , but the pevious owner said he didnt have any cooling issues

the car is BMR's 04 gto they built , between blowing the original 5.7 , putting a 408 in it , and not sure whether bmr or the 2nd owner swapped back to a 5.7 , but anything is possible on what happened to that tube , im the 3rd owner , the car will be back with a vengeance early next year with boost
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