Dyno'ed My 360..it's a pig..what next?

First - if it's a cruiser then tell people it's 300hp and drive it.
Or - if you want the power... There's the potential for a ton of screwed up, power robbing issues with your setup. The vast majority can come from simply skipping some steps during machining and assembly or chosing components that are simply not that good (at least IMO). I don't think it's the carb. Obviously that carb wasn't tuned & I feel a 750 would be too much for a mild cruiser. The exhaust is more than it needs, but isn't robbing power. The heads are probably a mess and the bissgest choker. I've seen what "cleaned up" reused clapped out heads look like and they waste a lot of power. The cam is too small IMO, and I would have wanted another 10 degrees at .050 and another .030-.040 lift.