Originally Posted by maxcichon
I can't see why not.
I'm cleaning/beadblasting a set of valve covers right now and the holes between the small "breather covers" and the actual valve cover part is surprisingly small. I can't imagine a pressure difference between the 3 hose outlets.
But maybe someone else can chime in?
I think you meant the TWO hose outlets, and I agree.
( the third one is the vacuum port on the throttle body, so I'm SURE there will be a pressure difference between that one and the two valve cover connections, else we're pooting in the wind)