As I start my xmas list of parts for my bbc rebuild, I gotta say I'm at a loss as to which cam to get. Not being totally clueless as I know the basic stuff such as lift = distance valve off seat and duration = time valves are opened. Well with that being said I'm only 99.9% clueless. I can look at Jegs for hours and still not really know what I'm looking at. I guess what I'm getting at is what am I basing my selection on?