Positive crankcase ventilation

I'd say the answer is "maybe" Remember the way they were set up originally, even on 440-6 or hemis. A pcv valve in one cover, and the opposite corner a large open hose going to the filter bonnet. This was "normally" air going inTO the engine, but under hot conditions / high RPM/ "high throttle settings" that hose became an auxiliary outlet feeding engine fumes into the air filter bonnet