regorih

Seems like some chatter is going around for cams that will not use DOD and VVT.

I can see getting rid of DOD but VVT is actually a wonderful technology that has more benefits that standard cams.

What are your thoughts?

PRE-Z06

VVT cams are great for low end and if PTV clearance isn't an issue with a larger cam where more power can be made up top w/o it. One of the reasons the LT1 falls off up top than the LS3 imo is because it is a smaller duration cam even though it can be retarded.

VIN666

So far I have only seen threads about cams with DOD, without DOD and with cam phaser limiters. Nothing about eliminating VVT all together.

regorih

Keep looking

Jason 98 TA

All of our LT camshaft will be VVT no problem. You'd have to be crazy to remove VVT simple as that....

VIN666

Why would I keep looking?
I don't want one. LOL

PRE-Z06

I thought you stated there were PTV clearance issues on the intake side in your other thread as there are no valve reliefs?

Jason 98 TA

Yes it's real right p/v but that doesn't change the fact VVT is a crucial part of overall powerband.

I just see no scenario where someone would remove VVT unless 1. They don't understand it (happens a lot in L99 Camaros) or 2. The phasers prove they can't keep up (which GM Phasers have always been sweet)

Fore58

I have the L99 VVT 1 cam from Texas Speed. He is right.....it doesn't make sense to remove the VVT. VVT maintains its torque curve at low end. I think most of us only look at the peak power alone. Due a research on the Camaro site and that may enlighten you more about the aftermarket VVT cam.

arghx7

Somebody with HP Tuners' LT1 stuff should post the stock cam phasing map.

PRE-Z06

I hear ya and don't know the limitations of the LT1 as you do, but the fastest stock bottom end NA gen5 camaro doesn't run VVT. The LT1 lifters appear to be able to handle more than .500" lift safely though, so maybe that will help?

hklvette

Fastest in the 1/4? Sure, since you don't go below 4k rpm anyway in that application and can't stick full power in first gear. For general street use, there's no reason to not use VVT. It may actually allow bumpier cams to be more streetable since the overlap relative to TDC can be moved.

Late Model Racecraft

People get VVT and DOD confused. They are two completely separate control systems.
I agree and almost all of our C7 packages will include camshafts with VVT. The only time we remove VVT and DOD/AFM on the old L99 stuff is when customers want crazy hp so when we rebuild engine and install big lift cam shafts/ supercharger/ turbos we have to upgrade lifters to accommodate for high rpms/high lift. There is one valve pocket on the new LT1 piston so PTV is still going to be an issue with larger camshafts.....

Fore58

Correct......you won't know anything about VVT unless you have it. Some members just believe that the non VVT cam is much better and make way more power. I can tell you right now that my Texas Speed VVT-1 cam SS Camaro made more horsepower than my 224/228 and 230/234 which I had in my C6. Now, during that time Texas Speed would not disclose the specs on their VVT cam series.....they may now. After a while, it really didn't matter to me because the cam performed very well. On the non-VVT cams my torque numbers went almost backwards but on the VVT cam my torque numbers went forward especially at low end. Having said that, the C7 is VVT engineered......GM did this for a reason. I truly believe that it would not take a big VVT cam to reach 500 rwhp. Just my .02

sallen619

What are the stock C7 cam specs?

Late Model Racecraft

Ours checked out to be close to 202/206

sallen619

Thanks

Mike@NewEra

The fastest stock bottom end (Naturally Aspirated) 5th Gen Camaro made that pass almost 2 years ago close to winter time at ATCO (DA was way below 0). My 2010 Camaro SS is the fastest stock bottom end 5th Gen Camaro that is currently racing still and my car is only 1 hundredth slower than the fastest recorded time (1/4 ET 10.84 vs. 10.83) and has never been ran in a negative D/A. My Camaro is using VVT, and has been for 3 years with the same cam successfully. Also, the next fastest car behind me is also using VVT (1/4 ET 10.87). It's all about having the right cam, setting it up right, and the rest is in the tuning.

0Anthony @ LGMotorsports

Unless there is a major push for it, I think all LT cams will be VVT just due to the fact that is how the car is setup.

As was said above, on the L99 Camaro setups it was easy to go to the LS3 as all of the parts were interchangeable, but there is no current LT engine that is not VVT and DOD.

Possibly phase limiters, and things like that, but like the others said, I don't see any reason to remove it for 99% of the customers doing builds with the new engine.

PRE-Z06

I hear ya and agree it's hard to compare a manual car to an auto fairly.