Inspection lash is .012" for 447 cams as well; it's in the Appendix to the factory manual below the valve timing specs, but left unlabeled, just to make life interesting. IO=36* BTDC, IC=68*ABDC, EO=68*BBDC, EC=36*ATDC.
Might as well give an example of lobe center calculation here. The formula is this: (Opening in degrees + Closing in degrees + 180) / 2 - smaller valve event in degrees. For the 447 cam, the opening and closing numbers are symmetrical, so one calculation does it for both intake and exhaust lobes: (36+68+180)/2-36=106*. If you have a bit of a misgrind you tweak the valve events to put the lobe centers as close as possible to spec. or, if you're tuning for special purposes, to either side of it. The lobe centers are the reference points for determining whether valve timing is advanced or retarded.