Don't fall into the "bigger is better" trap, especially with your cam selection. One of the easiest ways to really screw up an otherwise good running combination, is to over cam it. All of the components have to be choosen to work as a combination, and that includes compression ratio, head work, intake/carb choice, torque converter stall speed, and rear end gear ratio. If you put a big cam in an engine with a stock converter and say a set of 2.76 gears in the rear end, you'll end up with a lumpy sounding engine but absolutely no bottom end power. It might be fun to listen to, but it'll be a pig coming off the line. Tell us your current or planned combo and I'm sure you'll get some great advice on cam selection.