I had a 01 ECSB 4x4 5.3L, 3.73s With Dyno Tune, LT's, Exhaust and Intake, started at 194 Rwhp, ended at 245 rwhp. The truck got stolen so I'm having to look for a new truck. I am looking at a couple of clean NBSs but I think a nnbs or 14' is more realistic. My friend let me borrow his 09 ECSB 5.3L 2WD last year and it drove nice with good power, but especially above 60, my truck pulled allot stronger.
So I am considering a
2008-2011 ECSB 4x4 6.2L (6.0L for the 08)
2008-2011 ECSB 4x4 5.3L
2014 ECSB 4x4 6.2L (with 3.73s)

If I got a truck not under warranty I will do a Tune, LT's , Exhaust, Intake. For the trucks under warranty I will only do a exhaust and intake,

So my question is, with these modifications, will any or all of these trucks be faster than my 01?
Note: my 01 weighed ~4800 lbs, the new trucks weigh about 5300 lbs

 

I can't speak for the 5.3 , but the stock 6.2 in my CC Denali runs damn good , moves that pig around easy . I can't wait to tune it and headers .

So yeah I'd say with tune and or minor bolt one you'll def be faster and very happy . I like the coil over suspension a lot better than the old style , it handles great and rides awesome .

 

2014 5.3s are running hella strong. More faster than a NNBS.

 

Any idea what mine ran 0-60? I estimate in the 6-7 range, but don't really know.

 

I feel my 14 runs just as strong as my old lq4 that was tuned, headers, full exhaust, fully built 60e, running on 16's.

 

I went and test drove a 14' 6.2L CCSB 2wd w/3.73's. When you put your foot in it, it pulled hard, had issues finding traction. it just didn't have the same "ferosity" my truck had, but I think allot of that was down to the truck it's self.