[68c10owner]

Originally Posted by Super73

Sorry, if I was building a motor for a target RPM, the cam is the very last thing in the motor I would figure out not the first.

Stick a large duration/high overlap cam in a motor intended for high rpm, in a motor with a long runner dual plain and a small tube header, Peak TQ rpm is going to change from the large single plain / big tube header is should have. Those valve events are no longer optimal for that runner and header.

I have seen many combo's that the above example applies to. Big cam for high RPM yet choked off by intake and wrong headers. Power band is way earlier than initially thought. Or the opposite, small cam with a single plain and big tube headers, motor can't breath due to the small cam.

Valve events should always be figured out after all the supporting components are selected for intended usage.. As you said, the cam is the brains, if you don't go to school (supporting mods) how can you do your job (cam).

An optimal converter for best performance has to be selected once peak TQ RPM is identified. Otherwise you are only throwing darts.

This is completely wrong. You need to know what heads your using before picking the cam but the the camshaft and the heads together determine the power band. I have seen dyno where the victor jr made more power across the board over the dual plane when the dual plane should have come out the winner. I have never heard of doing it the way you describe in the 25yrs i've been playing with hot rods.