I just purchased a holley/lingenfelter LS6 intake manifold for my 98 z28
but since I have the ls1 intake on my car I heard that I have to upgrade new coolant lines for the ls6.I called the dealership to see how much the coolant lines were and he told me that they are all the same from 98 to 02 meaning that 98-00 ls1 and 01-02 ls6 intake coolant lines are the same. Does anyone know what else do I need and can I use my current coolant lines? THANK YOU

 

I think the PN's have changed, bring both sets of numbers just to be sure.

Pipe 12578838
Plugs 12563325

 

well the holley intake has the connection for the egr valve so do I still need the block off plate? and which coolant lines do I need can somebody give me the part # and what ever else do I need. Thank you

 

We're not talking about EGR - see the LS6 intake swap writeup at www.ls1howto.com/index.php?article=5 Not familiar w/the holley intake setup, but helped a friend do a regular LS1/LS6 swap - post if you have any questions.

 

So let me get this straight...the 2001 LS1 intake "IS" an LS6? Been trying to find one ...but to no avail as of yet

 

thanks for the help

 

yes, all 2001 and up LS1 engines came with the ls6 intake manifold.