A first time cam installation is something that requires carefull research and study. The link below is from Crane cams, but all major cam companies have instructions on their websites. Also, there are some very good videos available that walk you thru the whole installation process. One of the monthly mags had an article about a cam swap with the engine still in the car. It was very detailed about the prep. If you think you might like to check it out, I'll try to find it. Check this link:
http://64.90.9.168/cranecams/pdf/214e.pdf
http://64.90.9.168/cranecams/pdf/214e.pdf