What does the chamber measure? They are usually 85-86 OOTB, and with cnc work, they will be larger. So did you have them milled any?
By your specs, assuming an 86cc chamber you have 10:1. Coupled with the large cam duration, you have no cylinder pressure. That will no doubt take some power away from that engine.
If you read my first post, and check out the build I did in the link, you'll see we used a cam with only 236@ .050 to achieve 535HP and 620TQ!


Brian Hafliger