combustion chamber question

What we call quench is really only a part of what the right chamber size and shape does when the piston and head get close enough. You do not "lose quench" with the dished pistons available for our Mopar small block strokers. I typically run the piston to head at .034" with the gasket I would normally use. So the deck is cut to get the piston proud of the deck .005". Because of the stroke, using a flat top basically means not a pump gas engine unless you really know your tune and plan to use racier parts. So you should be planning this engine more in terms of forward thinking.