What I have: 04 GMC ecsb 4x4, 6.0l, 8" lift, 315/75r16's, 4.10 gears, manual 5 speed trans. cai, pp throttle body. Dual exhaust w/flowmaster 40's dumped before the axle, diablosport handheld tune.

Seat o' the pants. 1st gear, nice torque, revs fast, 2nd gear, struggles a little unless you wait to shift at 5 grand + from 1st. 3rd gear, pretty much the same. Third is a dog unless you keep it in the 4-5000 rpm range. 4th gear pretty much the same thing and 5th, forget it. Great for highway though. (this I know would be helped with gearing) but..

What I want: a few more ponies and some more torque to pull this thing without having to wind it out, although I don't mind, I do it all the time, but still...would be nice to flatten out the curve a bit.
I want a nice choppy sounding cam. I heard a few clips on youtube of some cammed trucks with moderate cams but 109 lsa. Sounded awesome, but are there vaccum issues with that tight an lsa?

Matt from TSP suggested a comp cams 212/218 lsx high lift cam with 115lsa. He said going with much more duration than that and it will suffer with torque loss down low. I am sure this would work, but I want something with a tighter lsa, 110-112. Anyone have any suggestions? I am in shopping mode now.

 

That 212/218 would work for what you are wanting but I would personally get a lower lsa like a 112lsa.

Guys have good luck with the tsp 220r also in 6.0L engines, it has good power offroading.

Here is some clips I found of the tsp 220r in 4x4 gm trucks.

[youtube]mS_C4SZoz1E[/youtube]


[youtube]InM5rs25Ugw[/youtube]

oh btw your gonna want to get a custom tune from like blackbear, wheatley or one local and get rid of the handheld.

 

Thanks. Tune is also in the mix along with LT's. Will do it all at the same time.

 

That last vid above desperately needs a tune. A 220 cam should set there and idle all day.

 

Yeah on the last vid the guys says its untuned.