318/360 Crank/347 running on Dyno

Ramm - I ran a 318/349 using cut down 1.72 CH slugs a few years ago....and ran into p-v issues, even with .100th off the top of the slugs.

Did you measure your p-v clearance?

Reason I ask is I suspect a lot of my issue was my shaved teen heads that I used......