I got 8.69 in the wallace calculator which feels wrong. I don't know the real math behind calculating so I made some guesses.

I went with 3.32 as the valve relief because a 4.0705 x .5 cylinder should be 106.68 CC, the 0.044 into the deck height made me question it.

Maybe it should be -0.044? that would come out to about 10.66