360 Engine cranks but won't start

I talked with her this eve. She bought this engine assembled evidently by a private party, it has never "really ran." She was told it's a purple shaft cam, but may not know which one. (paperwork?)

She plans to get a gauge and do a compression check, set up the timing and try it. I would not make assumptions, guys. Who knows?? I sure don't know..........what cam this really is......where cam is timed...............whether the heads / deck has been shaved........and whether the valve gear is "right."