Internally Balance Cast Crank?

whats the compression height? 4 inch crank gonna want something like 1.45ish where a 3.58 wants a 1.65ish or youll have a positive deck height, witch is ok long as rings stay in block and useing open chamber heads....
Thx dirty WB I got a set of 302 castings with open chambers and 2.02" valves added. I will keep an I on the compression height.