I would say you need to provide more specific information here.Carb, cam timing and specs , actual compression ratio and cylinder head info come to mind. If you haven't tried to dial in the combination yet, maybe you missed on the tune up. What you are seeing there is probably not far from actual rear wheel horsepower of a stocker rebuild. More specifics are needed. It sounds like you are just getting started and need to make some adjustments ,one at time ,to get a direction. You may still have some left on the plate. Work the small stuff first , one at a time. Good luck, keep at it. Bill