[ByronRACE]

So you want a smooth idle like a production car in a Cobra?

You'll have more bottom-end grunt than the tires can connect regardless. Personally, I'd go with more duration, a more agressive idle lope, and shift the power band up 500-1500rpm so you can get some power out of it.

216/224 at .050 is a tiny cam. Sleepy really. I bet the power peaks by 4800rpm. Yes it'll have a smoother idle. Yes, it'll make explosive low-end torque in a narrower band. But, it'll all be over well before the rpm capabilities of the engine have even been explored.

I'd be looking for something more along the lines of a 230/240 at .050 and would recommend running various cam choices through a simulator before you decide.

My little 435" has a 242/256 at .050 and should peak by 6300 in a NA application. With 25 more cubic inches, I bet it would peak around 6K...which is closer to what I'd shoot for if you want to get power out of it.