Mark you need a fresh air breather at some point, preferably at a level above your PCV. My 327 has an oil filler tube at the front of the manifold, I added a breather cap there.
Check out Lugnutz post in the Engine Shop on this subject, many folks added ideas on how to route the PCV system to add filtered air for the crankcase.
Last edited by TUTS 59; 12/21/20211:12 AM.
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