stroker flat top piston valve to piston clearance

The best and safest way is to put it together and check for the clearance yourself.

Someone else may not have the same exact set-up as you and their results may not be the same as yours. It's best to check your set-up to be sure. It's not worth taking a chance.

I had a piston hit a valve, and the valve was bent, the piston shattered, connecting rod bent like a pretzel, and huge chunks missing out of the block. And a nice big pretty puff of white smoke behind me. Nothing but scrap left over, and then find a new engine....

I wouldn't chance it.