A TRUE flat top(not valve notched) of either pistion in the 292 will up the compression and Depending on the head thats used Or how much it may have been milled off it.Or angle milled can an will bring you anywhere from 10-1 to 13-1(plus?) You less you have the piston lower in the bore Our have a piston custom made. }[oooooo]
God doesn't like ugly.
