Milling 360 heads for a 318

For what it's worth, my 80's 360 heads are listed as 66-72cc. They measure out at 78. There are online compression calculators that can help you with dimensions needed to make 10:1 static compression ratio. However, depending on your combination of parts as a whole, you might not be able to run on premium pump gas. Calculating dynamic compression comes into play then. Will this be a drag only motor? Street/strip with occasional highway use? What is the gearing and type of transmission? That will all be a big factor in selecting a cam.