505 stroker fresh off the dyno - Power seems low? Thoughs?

Not that I think it would make a big difference but I see you wrote that you set the lash at .016 cold as it should be at .018 hot. With aluminum heads at operating temp will grow by about 6 thousandths. I set mine at .012 so I can get .018 on my howards solid cam and it was confirmed to be right at that hot.

So your lash was lose not tight as I have seen some say. You were running more like .022 lash. Shouldn't make a huge deal but on an already not too big of a cam for a big stroker your pulling a couple more degrees of duration away from it(about every .001 of lash it worth about .5 degree of duration.)

A cylinder pressure as has been stated a lot will really tell the compression story. You can search for Wallace racing dynamic compression calculator and that gives the estimated cranking compression value for the dynamic compression that results from your compression and when your intake valve closes and what your elevation is. So if your dynamic compressoin calculates to 8.5 and 175 and your showing 140s... .

A cold compression test with battery charger and carb wide open should do it.