For any of you who have seen my motor pics I have a very interesting
question. If the rocker covers have 2 open vent breathers ( one on each side
at the front ) and one closed vent (with oil separator) that terminates via
a hose run to the back of the air filter housing, do you really think I need
a PCV valve. The motor is a 383 with tall Mopar Performance aluminum
rocker covers and I just can't figure how a 3/8 hose could maintain positive
pressure considering the volume in there is like a music hall.

 

The PCV creates a vacuum in the crankcase to draw out the pressurized blowby.

I believe it is essential in any engine, my son runs the PCV to a seperator with the top air vent ran to the carb manifold vacuum and drains it at oil change time.

 

With your current setup the pcv is doing nothing but clutter your engine bay.