If you don't have a way for the air to get into the crankcase, then the corrosive gases from there that are supposed to pass thru the PCV Valve and the hose to the back of the, carb really does nothing or possibly weakens the oil pan gaskets and other gaskets over time.
You need at least one breather in one valve cover.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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