[Bruce Edwards]

Bruce,

Just change out the cam. The heads and intake will work fine. Building an engine is and art. Pick the kind of HP and performance you want and build to that goal. If you do not like the way the engine is set up with the cam it has get one with a lower lift and duration. That will give you more bottom end power. Also make sure the carb is set up correctly and the ignition system is working well. A poor ignition or screwed up carb can give a lot of the same signs as an engine with a cam that is to tall for the rest of the set up.