[madmaxx]

Blykins gave the best advice of anyone, contact one of the reputable engine builders on this site and let them sell you everything, cam, springs, etc. At the rate you are going, the way I used to be, all you do is become a test engine for all the manufacturer and waste alot of money and time and in the end if you do get it running an unreliable engine. The cam is the brain of the engine, the odds of a shade tree mechanic getting the right design is less than 2%. You would be amazed, the builders I have used on this forumn charge close if not sometimes cheaper than summit and you get their knowledge for free.