These three guys are all related, and what you end up with, is the result of all three. Myself, I prefer a motor with good low end and midrange torque, that picks up the Hp on the top end. Rpm is an equation here also, and most cams run out of Hp and torque, long before they reach max Rpm, so does it pay to over rev one, or is that what you want to do, in my opinion, no, try to match your gear for max torque on the bottom, let the Hp pick up the mid range, and don't blow th damn thing up! Short stroke motors, usually have to be turned tighter, than long stroke one's, then someone that's a good tuner, can pick you a cam, that will do the job. I'd prefer torque over Hp anytime. Bob!