I'm no expert on reading dynos but the track is where you should matter.
When I 1st join I ended doing a VVT cam setup made 427rwhp 417rwtq getting amazing mpgs btw (21)(27) any who with drag radials I managed to hit a 12.97 in the 1/4 so I'm guessing you have a 12.70 pass in her IMO.

Also are you still on the stock pump? Also I know many members here don't like LS9 cams but with a blower trust me you will net mid 500s easly

 

ya stock flex pump. mike at new era said the stock pump will work at 10psi. I wont go higher then that.

 

few things on this post:

1. What did you do to get 27mpg highway please tell!

2. those are good numbers for the VVT cam swap, makes me optimistic for my setup

3. 12.97 is quick, that was VVT on DRs 2wd CC?

4. Your signature seems to have changed, it appears you have sold the Denali? Say it aint so!!!!

 

Based on some others setups 10psi is easily doable stock for you. When you add meth and considering the meth kits are not super pricey I think you will be sitting good and safe at 10. Get some injectors and throw up some vids of your ride. Never seen any of your truck.

 

I did take a video but the wind made it horrible.

 

1.) I would drive a 60mph with cruise control on with very lil braking
2.) Yes I loved my old VVT setup
3.) 13.27 full weight which included the bed tonnue cover no weight reduction
12.97 was by removing the cover, tailgate, spare, rear seats, rear bumper and on DRs on a 2wd cc
4.) yeah don't wanna talk about it lol got a got offer on her

 

You sure have more in it CarbonGMC made 556rwhp out if his 5.3L on the stock flex pump. But numbers are numbers bet you sit smile at WOT lol

 

I know this is an old thread, but I don't think its a coincidence that the torque drops off right after the VVT kicks in and begins retarding the cam.

Ive found that the 6.2 responds every well to a slight reduction in advance between 2,000 and 4,000 rpm - accompanied by an increase in spark advance and a slight increase in advance 4,000 -6,500 - with a slight decrease in spark advance obviously.

The maggies make a big note this.