Builders: Square engine, Over Square, or Under Square for you?

I guess that might be affected more by how much compression the bigger bore has. A bigger bore will draw more mixture if everything else matches and more compression will make the piston size more effective, I assume a bigger piston also has better heat dissipation since there's more aluminum for heat to absorb.

Hadn't considered heat dissipation. I was thinking more simply about the burn having more surface area to push down on per stroke and wondering if there is a decent way to estimate how much additional power was possible just on that factor alone.