Need help / advice on motor upgrade / replacement




1) What other items should I be replacing to match up properly with the new motor? airbridge? Fuel lines? FRC's?
2) What items do you suggest I replace "just because" while I have it torn down? Tensioner pullys? Water pump? Oil?

3) I have a set of LG Pro long tube headers I will be putting in at the same time. They are made for a 2001 to 2003 C5, but I was originally told by LG that I would just need to buy a new AIR tube to make them work on my '97. Now that I am using a later model motor, do I need to do the AIR tube, or do I effectively have an 01-04 car now in regards to the headers?
4) Is there somewhere that I can find a COMPLETE list of all the gaskets, fluids, parts, etc that I will need? I would like to get everything before I start the project.
5) Any other advice?
I don't know if it matters, but I will also be replacing the A4 tranny and torque converter at the same time. Again, just "preventative maintenance".
Thanks guys.
1) What other items should I be replacing to match up properly with the new motor? airbridge? Fuel lines? FRC's?
2) What items do you suggest I replace "just because" while I have it torn down? Tensioner pullys? Water pump? Oil?

3) I have a set of LG Pro long tube headers I will be putting in at the same time. They are made for a 2001 to 2003 C5, but I was originally told by LG that I would just need to buy a new AIR tube to make them work on my '97. Now that I am using a later model motor, do I need to do the AIR tube, or do I effectively have an 01-04 car now in regards to the headers?
4) Is there somewhere that I can find a COMPLETE list of all the gaskets, fluids, parts, etc that I will need? I would like to get everything before I start the project.
5) Any other advice?
I don't know if it matters, but I will also be replacing the A4 tranny and torque converter at the same time. Again, just "preventative maintenance".
Thanks guys.

I suggest new vaccuum hoses since they tend to crack when weathered and or when interrupted. Replace the serpentine belt. also like you mentioned I would either rebuild the stock oil pump or replace it. It wont hurt and its inexpensive wheather you rebuild it or buy a new one.



Gonna port the throttle body and match the intake to the heads? Do anything to the heads?




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Last edited by AU N EGL; Apr 10, 2009 at 06:24 PM.
Good luck
You will need the later air tubes.
The water pump is not a bad idea if your still on the original one.
Throw an UD pulley on it. That will give you new belts also.








