The tube from the PCV valve goes straight to a little "tree" takeoff on the back of the intake manifold behind the carb, the other branch goes to the the brake booster.

I have just recently changed the oil and filter. It was very clean and almost to the full mark now it is a little dirty and on the botom mark. It does not smell of gas. The last time I checked it before now was a week ago during a 350 mile trip and it was fine then.

I was going to replace the carb with an Edlebrock in any case.