I wasn't really in the know on how different cam shafts work, and especially how higher performance ones work... so I noticed on Howstuffworks.com there is a good write up on it, so here's the link for others who don't know (or the pros who want to add their comments---cuz I KNOW you're out there).
HOWSTUFFWORKS (CAMS)
HOWSTUFFWORKS (CAMS)
