DavidGXP

iTrader: (14)

It's the brain of the engine. You know I'm not just looking at numbers

Intake valve closing point and exhaust valve opening points taken in consideration. As well as overlap. I don't wanna use headers so keeping the overlap within a certian figure is important.

DavidGXP

iTrader: (14)

Wow.. 340* Are you sure

AlabamaGuy

iTrader: (5)

ADV is a lot different than dur @ .5"

707chance

iTrader: (2)

I really liked working with Roger. I hope to get my car dynotuned with my tax money so I hope I will be able to add something concrete to this discussion

DavidGXP

iTrader: (14)

Get it done man..... Ive been looking into your cam even more but im still leaning towards the 210/218 with 1.8's. Seems like the 056 peaks at about 5800-5900 in a 5.7 great torque curve from the graphs i have studied. Headers with 3.29/3.69's would make our cars a blast to drive!

707chance

iTrader: (2)

The good news is that I do have headers and 3.29s and the car is alot of fun to drive. But I have to confess, after driving around now for a few months I sometimes question my cam choice, could I have gone alittle more aggressive? Am I getting all I can out of this engine? I hope that a good dynotune and the N20 will quiet that little voice in my head.

nmp0098

I have dreams of more cubes, but they are dwarfed by my desire for VVT. I think it would make all of the difference in the world in this car based on my limited experiment.

I've seen the advertised specs, which are in the service manuals, quoted by a couple GM techs on this site. I believe that's around 0.002" or lower. Two different measurements show the 0.006" lift in the 310-320 range. It's not symmetric at low lift; there is a lot of low lift overlap. I suspect that is related to us not having an external EGR system.

You probably could have gone with a bigger cam, but it's really hard to tell how it would effect the car without tuning for both cams and running them side by side. Tuning will up the power quite a bit, and, just as important to how it feels, tuning will clean up the transients quite a bit which will give a you a lot more jerk (rate change of acceleration, or that head snapping feeling). Since you are already done with the build, I'd probably stick with that cam even if it doesn't pull as hard as you want up top (not saying it will or won't) and just go with bigger jets in the N2O system. You could add a progressive controller to keep the shock to the rotating assembly down, then turn up the juice as you get down the track.

rkvette

nmpoo98- i liked your posts on [cams].. thanks for all that information ! i think a lot more torque will blow up, our great trannys/quickly ?..i also think a top end cam ,higher rpm's might be slower than stock at the drags ? rkvette