Sorry RAMM. What YR said. For an engine that was totally gone through and has a .500" lift cam it's down on power. Could be tuning. Could be something else. It sure isn't the calculations. If there's a chassis dyno losing 30+% because of driveline loss the dyno's broken.
If it were me, and I owned the car, and saw the cam card, I would be tuning the hell out of it and if it didn't improve digging into it over the winter.