If you want to use the PCV it might be time for some new valve covers. I know the Corvette covers are nice, but these have GM type oil baffles and cast in oil drippers like the 1970 LT1 aluminum covers. Don't let the picture fool you, they don't have the oil fill cap, I drilled it myself, but no matter since you have the oil tube on the intake. Maybe something to think about?
141108 - Die Cast Aluminum Valve Cover - SBC, Polished with Recessed Emblems, Tall w/Baffle