Compare your reference source to the way GM designed the PCV system. The right way to do it should be glaringly obvious. The valve needs to be located approximately level with the rim of the valve cover, and on the downstream side of an oil/vapor separator baffle.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!