Theoretically yes, but I wouldn't. Ford put the PCV in the valve cover around '65. You can certainly try it; it'll smoke (burn
oil) from the
oil getting to the PCV valve and/or there'll be
oil leakage if there's a problem. If it doesn't smoke and no oil leakage around the PCV valve you're OK. Otherwise move the PCV to the valve cover, and always use a baffle.
Dan