I only understand cam numbers a little bit. I understand lift, duration, and LSA. But, I don't know how it affects the engines power. I don't have the tuning experience to create a perfect cam. I am pretty much relying on cookie cutter cams. I believe the Comp cam I'm looking at has a 109 LSA. I need to school myself a little more on how these things affect the power numbers. I don't have a dyno to play with, just the experience of others. No cam has been bought. I feel this could really be the most important component to get right that the engine can grow around.