On my 34, I run a PCV on my 350 from the valve cover to the front center vacuum port on my Edelbrock Performer 600 carb. Never any problem with this one. There is no facility for a pcv on my 57 Olds. It has the road draft tube that exhausts when the car is run at speed for a long period (several hours), but the valve covers (Offenhauser) have no facility for a pcv valve, and not sure I would want to attempt to install one. The carbs, like Old Gold's, are Rochester 2G's (Olds J2). There is a small vacuum port on the driver's side in the rear of the #3 carb, that is connect to a wiper unit, that is no longer used (wipers removed). This set up has been this way for nearly 50 years, and motor doesn't seem to show any sign of disfunction.

Is there a pcv solution that does require drilling and tapping? Or is my next step as already planned, which is to eventually replace the aging 371 with a new fire breathing ZZ502.