Let's Build a 416 with Cast Iron Heads and Manifolds

If the heads highest flow is at a certain lift and you only cam it with a lift in that range than how much time is it really open at that lift? Not much. I’ve always understood (I know I’ve read that here and over on Speed-Talk among other sources) that you want more lift (to a point) so the valve spends theoretically more time in that usable lift range as it reaches a higher lift where it’s not really open there very long anyway. Maybe the flow bench experts can clarify or expound on this?

Edit: yup, I lnew I’ve read about this elsewhere. (again, more lift “to a point”)

One example: lift vs. peak head flow - Don Terrill’s Speed-Talk