Vacuum Mystery ?

Thanks for the reply. "Massive" as like a vacuum cleaner against a finger and "none" as like zero when laying a piece of paper over the breather canister hose end or the opening on the valve cover. I understand it should not be equal vacuum on the passenger side, like you mentioned. However, there should be enough to pull the paper to the opening. The owner's manual (1970) and a Glenn's Performance book (1971) both state there should be enough vacuum to pull the paper down, indicating the crankcase is properly getting vented. At idle the piston in the PCV is sucked up, thus opening the passage and creating air to be pulled out of the valve cover. I have tested my other two cars and they both have enough vacuum on the passenger side to pull the paper down. ('69 318 and '70 383)

More info....1) While idling, if I pull the PCV out of the rubber grommet and cover the opening with my finger, the car will die. 2) You mentioned rings, all 3 cars do not show any signs of worn rings.