... The PVC goes to the bottom of the air cleaner.. the other side goes to manifold vaccuum
Other way around there Steps
The PVC is plumbed from the valve to the base of the carb - or the "manifold" vacuum source.
The clean air intake can be via a filtered breather on the valve cover, in the oil fill tube if so equipped, or plumbed from the 'clean' side of the air filter housing to the valve cover of the engine.
GM tended to install the PCV in the 'Drivers' side valve cover and the crankcase clean air supply into the 'passenger' side cover.
This was to counteract the oil windaging characteristics of the vapors due to engine crank rotation.
Oil and vapors tend to accumulate on the passenger side vs. the driver side valve cover areas. Drainback is always inhibited more on the passenger side head ...
But if a system is properly sized, correct oil separating devices are used and your installation is correct, a properly functioning system can be fabricated using either cover and even the cam valley for the PCV pick up point.
A properly operating system should deliver 'Full' "manifold" vacuum to the PCV valve at idle and vacuum signal will diminish as throttle is opened until engine reaches cruise, at which time the vacuum signal will once again reach or exceed idle vacuum depending on load and throttle position.
The PCV valve will modulate the flow of vapors extracted from the crankcase dependent on this varied vacuum signal and keep pressure from building in the crankcase during the cyclic rpm's of a given driving cycle.
To 'weak' of a valve can lead to excessive crankcase pressures and result in excess windaging of oil vapors from openings and gasket interfaces of the engine.
To 'Stong' of a valve can lead to excess oil consumption via oil vapors sucked into the intake and also excess oil sucked past the ring lands into chamber - either of these is often seen as white smoke from the exhaust during hard throttle applications.
As stated, PCV Valves are specified by the pintle vacuum actuation values and are specific to a given engine type or state of tune.
If you are having issues it is best to find the recommended valve for your original engine configuration and then tune up or down on that spec. if needed to correct a given issue.
Hope some of that helps