I did some searching, but all I could find was old part numbers. What are the three current parts numbers for the LS6 seals/coolant lines? Thanks.

 

Yeah, PNs change all the time. I'd call/visit the dealer and have the old ones handy.

 

Well, that's just the thing. I have an LS1 intake manifold right now, and need the lines for an LS6.

 

I meant the old PN's for the LS6 if you found them posted on the site. Helped a buddy install his quite a while ago, his intake came with new gaskets and he got the coolant lines from the dealer. Last I heard the front coolant pipe was 12568478 and the plugs for the rear were 12562788. Don't know if they can cross-reference them, if not just have them look up the pipes for an '01.

 

the part #s for the front pipe is good on www.LS1howto.com but the plug #'s are wrong. You can hack off your back pipes and plug them with a rubber hose and bolt if you're into that sort of thing. I would reccomend buying the front pipe. This coming from a guy who has had his intake off 3 times in the past week chasing coolant leaks.

 

When you swap from LS1 to LS6 coolant lines do you still need to use gaskets?
or are the rubber seal on the new coolant lines good enough?
need a fast answer if anyone can help me out?

 

Can anyone answer my question??

 

I just used the o rings that came on the new ones.

 

Do you reuse the little oval type gasket thing that sticks to the block, when you remove the original coolant lines or do you remove them

 

12570678 for the plugs.

12581213 for the crossover pipe.

Hope that helps.