Picked up my heads from Powerhouse a couple days ago. Here is what the chamber looks like now
And for those curious about running the boss exhaust cams in GT heads. The spot on the head where the valve springs sits does not need machined down. There is a notch in the head under the follower that allows the roller to not scrub on the head when the valve is opened all the way. That notch needs to be made bigger due to the increased lift. It really doesn't look like that much needs taken away, just have to triple check that you have the required clearance. I am glad I had a shop do this, but it looks like something you can do at home.
Here are a couple pics to show the modification to the head
I was told that later '12 heads and '13 heads already have a notch big enough and do not require modification. Obviously checking for clearance would be mandatory.
I didn't get super far, but I got some shit done. Heads are torqued down, and I spent some time figuring out which cam goes where (the boss exhaust cams are not marked L and R just part numbers which are difficult to google) and taking the VCT stuff off the ends of the cams (something I did't do when I disassembled the motor).
The shop manual I got mentions something about a VCT oil filter that goes in the end of the cam before the phaser goes on, but mine didn't have any when I took it apart. Anybody know anything about this? It might be an '11 only thing they did away with or something, since mine didn't have them I will probably just move on without them.
More pics to come, I hope to get a lot done today.
oops forgot the last pic that shows where I'm at