Car is drag race only, SD tune and here is my setup:
Forged 347 with stock crank, flycut (LME)
Fast 90mm intake and 90mm TB
MS4 Cam (TSP)
5.3L stg 2.5 heads (PRC)
Longtube headers (Pacesetter)
4L60e with a few good parts in it
3800 SS converter (Yank)
Red top injectors (SVO)
255LPM pump in 02 tank
Double roller adjustable timing chain (Rollmaster)
Comp Cams Lifters

The plan is to switch to e85 fuel and change Redtops to siemens 60# and a dual intank pump set up from Lonnies. I also plan to spray a 100 shot.

I am going to have to get to the dyno after the new set up, but the last time I had it on the dyno it made 405 @ 7000, but it was still coming up and I didn't want to pull any higher on the 4L60e. I don't want to shift that high. I normally shift around 6700 and usually run around 7.15-20 in the 1/8th @96mph.

Could I make more power with a different cam?

 

If you don't want to shift that high then you could go with a profile that makes more under the curve power, but for drag racing you want the most peak power you can get. Sounds like the ms4 is already doing that for you.

 

doubt you would gain much of anything, the MS3/4 LOVES nitrous so I would run it as is

 

What's the LSA and ICL on your MS4 cam?

 

If you're also running e85, there is no point IMO in running compression lower than 12.5:1 scr. Just a waste of octane IMO when you've already got it to use. Do you have a copy of the dyno graph?