Crankcase breather question

71DodgeDemon340 said

Thanks for the video link, exactly how i was thinking it worked, how does higher rpm affect the way this system works? Also doesnt certain cams affect the system as some high performance cams dont produce as much vacuum as others? Or is there always vacuum present at the carb regardless of cam?

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it does! Good questions. Balance is hard, the correct PCV helps based on such. Do not think there is a hard set high science to apply here and I have always experimented. Those high price adjustable units seem smart but, catch can assemblies and remote PCV help some overcome oil pickup. I have always been able to find a PCV that works for me and helps keep the engine clean and no leakage, blow out. Good Baffles in the covers Like the originals and cross flow are instrumental. JMO