Specs for my SB

You can build an 600hp shortblock with the greatest cam known to mankind, but, top it off with a set of heads that can't support it, and you'll horribly miss the mark.

What do expect or desire for a power output. Go from there selecting.

Selecting a camshaft first may not be the best approach.

I'd guess with a decent head that cam could make 520ish, but not with that intake manifold. Xcellarators are good in some cases, not this one! Ask 70AARcuda what happened when he swapped to a Victor340 on a stroker.