I acquired a different set of valve covers for my 283 yesterday. They are cast aluminum Edelbrock covers, replacing a dingy aftermarket pair. The set I’m discarding has the common setup of breather on one side, oil fill on the other. The Edelbrocks lack the oil fill. (There is a knock out for oil fill.) My question: assuming there was venting at the oil fill , is it ok for the that side with no opening to not be able to “breath”? And while I’m at it, if I am correct in thinking that the breather ventilates the crankcase, how is the crankcase vented to the valve chamber? Is it only vented to that passenger side? Also- how is the oil supply or level in that valve chamber regulated? What keeps that area from over-filling? These are things I wonder about as I stare into the engine with valve covers and intake manifold removed.
