The cam is a Crane 282-H06. I am able to calculate the head gasket thickness necessary to achieve a static 10:1 compression ratio, assuming the valves are closed for the entire compression stroke.

On a traditional 9.5:1-compression 350 small-block with a hydraulic cam, the crossover point is around 220 degrees duration at 0.050-inch tappet lift, assuming the typical 110- to 112-degree LSA ...