I forgot about baffles...at least the PCV valve, and preferably the breather too need to be baffled so that they don't suck straight
oil. Most valve covers are baffled; if they aren't, Mr Gasket makes baffled breather grommets, part no. 5425; these are sized for Chevy valve cover holes, 1/4" larger in diameter than Ford holes, and the accompanying larger I.D., which will obviously fit a Chevy V8 PCV valve.
Dan