360 Advice Needed - Autocross / Street Engine Build

OK, actually I did get your SCR.....?? And nearly the same DCR, with an ICA of 65.5; pretty close agreement. I have gotten consistently good agreement with computations and measurements of cranking pressures, so that took me by surprise. But field measurement variations are there for sure, as you say. (And I don't think for a moment that the cam is 15 degrees out!)