FullAuto

You choose the size of engine you want to build and select a piston based on the desired compression. If it's a 302 stroker, it will be a flattop. If it's a 351 stroker, it will most likely be dished.

blackfox6886

thanks fullauto

67mustang302

You need to know what your combustion chamber cc and compressed gasket thickness is too. The idea is to select a piston that gives you the CR you want with the other parts you're using. Smaller chamber and longer stroke = dished, larger chamber and shorter stroke = flat top or maybe apop-up.