Actually there is a good reason to run more lift than your heads max out at.
If you put in a .450 cam, you get max flow for the millisecond the valve stops and starts to close.
If you went with say a .500 cam you get max flow from the time the valve hits .450, goes to .500 and back to .450.
Somebody like Dewayne can perform the sorcery and witchcraft required to put the duration, LSA, lobe profiles etc where it can make the most of your cylinder heads and put the torque curve where your application needs it.
Kevin
Agreed. As long as flow doesn't fall off at .500 then run a modern profile fast rate of lift cam to keep the valve open in the "sweet spot" as long as possible for a given duration.
