Brother that sounds great ! I love it . I don't hear any objectionable rasp , I've always liked that Corsa sound thank you for braving the cold and taking a vid . I can listen to 6.2s all day long , hell I use remote start on mine and sit by the rear so I can hear start up , i must be freakin wacko lol.

Where at in MI are ya ?

I see you possibly have a leveling kit ? Looks great , any issues w/CV angles or vibes ? How much is it lifted in front .



I agree , thanks for posting Rhinos explanation of VVT, excellent read .

Also apologize if thread is getting off track , but I feel it's great discussion , also you have a cool truck and I feel it's cool to talk about lol.

 

I agree entirely. I'm sticking with my Mast VVT cam even though it has caused me a lot of hair loss over the last three years, mostly due to me blaming the VVT for other tuning issues. I have been through this whole VVT or VVT delete thing and I was playing with the variable cam timing tables long before most folks on here would dare to and even Mast couldn't or wouldn't help. But, I now have my tune tweaked better (I now have returned the VVT tables back to stock settings) and even though I had to go back to my stock converter (for the time being, since my Yank fried the clutch) and my truck now pulls like a B!tch from idle straight to 6900 where it shifts.
The beauty of VVT is that by moving the cam from 8.5 degrees advanced to ~ 4 degrees retard at high RPM (at WOT) you can make more power under the curve and, by being able to advance the cam (not retard - since the L92 VVT moves the cam phaser from its parked position of 8.5 btdc) significantly in low load, light throttle conditions you get optimized power and mileage. That's the theory anyhow, but I recall that GM high Tech magazine published a VVT vs. non VVT article comparing similar cams (made by Mast) that clearly showed a hp and torque advantage to the VVT setup. It wasn't a big difference, but certainly VVT had the advantage even with slightly less intake timing, from what I recall.
If I had been smarter I would have done the VVT delete back when I did the cam change, as I would have saved myself a lot of headache, but I doubt that my cam would be as tractable as it is now with the VVT enabled. But, knowing what I do now, I would stick with VVT.

 

im just out side of lansing...yeah I put a 2in spacer in the front and a 3 inch block in the rear..removed the factor 1inch rear obviously..so its just up 2inchs all around so I could put these wheels on..i love the look it gave it no problems at all..but man o man did I lose a lot of power the tires arnt much bigger then stock actually. i expected to lose alil because of the rotating mass but now im thinking of selling them and going lower and lighter

 

i don't have any problem with the rasp or tone..in person it sounds great IMO.. except i just wish i could turn the volume down with out changing the sound

 

hmmmm some very good opinions on the vvt/non vvt cams !!! now im scratchin my head tryin to catch up from where i left off.

 

On the original/captioned question, i.e. Whether heads and intake are worth it: I would say that there has been much debate about this since the 6.2 came out and I believe that the evidence suggests that neither is a cost effective way to gain horsepower.
From what I've seen, the L92 truck intake doesn't flow well on a flow bench compared to the LS3 or a Fast (neither if which will fit on a truck without changing the front accessory drive system) but multiple dyno tests seem to indicate the truck intake holds its own in terms of making power with stock displacement and stock heads. And of course there are some better flowing heads on the market now, but it seems that is hard to see any huge gains in power even on a "cammed" stock cubic inch L92 motor (usually like 10-15 HP gain). The best bet would be to buy a nice 2.6 "intake manifold" from Whipple. That will make a ton of power without even tearing into your motor. That's the way I'm gonna go. I want my truck to feel like it does on nitrous all the time.

 

Was that you racing gypsy Denali ?? So a couple vids on u tube racing a white Denali on spray I thought. .?
I agree once I saw some of the flow numbers or the stock heads. There's no reason for more flow with n/a at least . Bang for the buck I agree you can't beat a blower I totaly agree

 

I like it! I've been wondering about whether I want to trade mine in on a '14, or mod it one piece at a time with the usual intake, cam, exhaust, etc. You're right that it takes a good combination and not just one mod to make big improvements. What I think I'm probably leaning toward is a supercharger, no internal mods, stock 3.73s and stock converter. I want it to be a fun and satisfying DD all the time with instant low-end and midrange torque, not just a high-rpm screamer. Nothing against *****-to-the-wall for the guys that like that, and I'd love to have a fire-breather if I could afford two trucks, but I can't.

 

LOL, sorry for thread jacking the thread and preaching on VVT, But I wanted to throw some other options out there. Some people misunderstand it some don't. You can go wrong either way but keep in mind VVT is pretty much going to take over pretty soon.

 

Yep. VVT and Direct Injection are here to stay I'm afraid. In another 10 years or so, our LS motors will be like how the small block Chevy is nowadays - still respected but a thing of the past...