The last time I seen a smoke show like this from oil catch cans installed was from a 1998 Chevrolet Camaro SS LS1 and the owner failed to change his dirty PVC valves and also routed the lines wrong but he could remember to trim his mullet though. I am wondering what brand oil catch can did you install? Also double check your lines and make sure they are routed correctly. Install new PCV valves if you have not already. I see mostly people with forced induction Z’s running oil catch cans not people with naturally aspirated Z’s.
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