Originally Posted by Hit Man

Don't waste time choking it down with that .458 cam. The power is in the heads, and they need a cam to match the flow capabilities. I would keep the duration in a medium range (5800-6250 rpms) to match your intake, but use the max amount of lift that the heads will take. This will hold the floodgate open longer to fill the cylinder. A cam will make or break an engine.