hey guys, I did an ARH header installation on my C5, it was great.
Followed the instructions I found.
Installed from above.

I'm hearing that the C6 Headers go in from the bottom.
I'll be working on some TALL jack stands.

Anyone have a .pdf of their instructions?
I can't find them anywhere.

Thanks in advance.
Art

 

I have one, I'll look through my emails and forward it over! Very straight forward.. what size headers? I went with 2" which were a bit tight but once positioned fit nicely!!

No need to remove starter and all this crap people say must come out ( at least in my case we didn't have to! )

 

Yeah the big thing is easy to leave axle back in, once all else out, put the headers in (but dont tighten them all the way down, then put in the x pipe sliding into the axle backs, loosely secure in the rear using the brackets, then loosely secure to the collectors, tighten up on the heads, then the rest re-positioning if needed to keep everything from hitting.

Good luck, and Be sure to get a tune

 

thats correct...

heres the install guide I used...

Recommendations –
1. Install these parts on a lift.
2. You will want the help of an assistant. Installing headers is easier with a second
pair of hands.
Required Parts Not Included –
1. These are round port headers. LS7 car owners will need to purchase new exhaust
manifold gaskets. GM part number 12617944. These are roughly $14 each and available through HINSON or your local dealer.
2. Stock exhaust manifold bolts are needed. If you have lost a set, you can purchase ARP header studs (#434-1301) or GM Bolts from the dealer.
Installation Guide –
1. Read all of the installation guide before beginning. Do not get frustrated with your
parts if you’re too lazy to read.
2. Prior to disassembly of your vehicle, ensure you have everything required.
3. Remove the factory exhaust manifolds and mid-pipes. We find it easier to remove the mid-pipes and work your way to the front of the car.
4. With the factory exhaust off the car, tie up the rear O2 sensor wires connector and leave them out of the way. They will not be used in an off-road system.
5. Install the front O2 sensor extension wires and secure them loosely to the vehicle behind the factory heat shield. It is hard to secure the extension if you wait until after the header is in place. Do this for both driver’s and passenger’s side wiring. Use zip ties for this purpose.

Dry Sump Engine Models Only – Drain the engine from the pan. Remove the oil lines from the oil pan that connect to dry sump tank. The oil lines will need to be moved out of the way to give clearance for the header installation. If it is not time for an oil change, capture the oil in a clean container and use it again.
7. The headers will easily slide in place on both sides. It is possible to hang the header flange in place on the rear wiring harness until the car can be lowered and a bolt installed.
8. With the gasket in place, install a factory exhaust manifold bolt in all cylinder head bolts. They should be turned only a few turns. This will allow you to maneuver the headers. You should see close 1⁄4” of threads between the header flange and cylinder head. Don’t forget your anti-seize.
CRITICAL STEP –
1. Do not break in an engine with any ceramic coated header. This will damage the
coating. If you’re breaking in an engine, use a non-coated
header or factory exhaust manifold.
2. Do not use header wrap with a ceramic coated header. It will lead to damage and void the warranty.