505 stroker fresh off the dyno - Power seems low? Thoughs?

The ignition timing is weird 30* all in? Something is off, verify TDC
Go ahead and verify the cam centerline, correct if needed, as many others have suggested. Install the engine and drive it, the true results will show up at the track in the time slips.
You wont be the fist or last to think their engine build should have made bigger numbers on the dyno.