THANKS TO: A&M Machine and Fabrication, CCTek (http://www.candctek.com), Hermance Design(www.hermancedesign.com), Paradise Road Rod & Custom, Harry Opfer Welding, Wegner Automotive Research, Clayton Machine Works
Give George at Clay Smith Cams a call. We got a "smaller cam from him we ran in our Camaro and it actually picked up 2 tenths at the track. Real good guy to deal with.
Take a clear sheet of paper and document your entire engine. You will need rod ratio, head cfm, application, etc. Comp cams website has a fantastic cam calculator engine. Use it to answer your own question.