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

I hope your feeling better and doing ok.
I have icon 4.382 bore pistons with 16.4 dish that look the same as what’s in your motor, 440 source just advertises as 17cc but it’s an Icon 16.4cc piston. Besides, they use the same photo for all the dish pistons on the 440source site.
That spinning assembly is 10.705. With the block cleaned up, I would think it’s gotta be within.010-.025 deck clearance.
How tall could the block be ? ..What’s the tallest factory block you guys have seen ?
With that cam, calculator says roughly
10.4-10.7 compression and 8.0 - 8.3 dynamic, depending on deck.
The static and dynamic compression ratio calculator

If the deck height is tighter, .00-.010
Static and dynamic go up close to 11-1
and 8.5. Maybe it’s detonating and why power was dropping off over 30* Timing ????
Mix some race fuel in and run it again,
bump up the timing