Engine milling maths

The Eddie (or any of the closed chambers) cuts for each cc will be more like the Mopar closed chamber. It ought to be pretty close, but that is why I mentioned that you can just touch the chambers a bit if you over cut a bit. Accuracy requires that you re-measure as you adjust it in.

The deck cuts will be very close to the cc change of the open chambers... which is the .0048" per cc mentioned earlier.

Treat the open chamber and deck cuts as simple changes in cylindrical volume. Divide the diameter by 2 and put that in the 'radius', and the cut will be the 'height'.

The results will be in cubic inches so to convert to cc by multiplying by 16.4.

You can find a cylinder volume calculator here:
Volume Calculator