Cam - Head - 470 Selection

Been there done that and wrote a few magazine articles on it:

http://www.moparts.org/Tech/Archive/bb/550hp.html

http://www.moparts.org/Tech/Archive/bb/Lobe.html

Just build what I built back in the stone age and you'll be fine. You can get an EFI version of the Victor intake for the EFI build. For the carb build just use a Performer RPM. Sell the cast iron heads and get a set of Edelbrocks. Have them ported if you want 550 honest HP. The hyd flat tappet in my low deck 470 would pull past 7000 rpm but I had top dollar rocker arms and beehive springs. If you use cheap parts there is no guarantee that a hyd cam will pull anywhere close to that.