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No no e vac system. should I get one?

Forget the Evac system. Weather you have one or not is not your problem. Step the PCV away from the oil baffle at least 1/4" - minumum and hook the hose to a vacuum source ( vacuum at idle, not ported vacuum ). Leave the breather off on the other valve cover. Fire it up and at idle put your hand over the open breather hole. You should feel some amount of suction ( even with a stout cam ). If it starts to pressurise right away, you have excessive blow-by for some reason.

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