Re: Vacuum hose routing
Your '67 has a road draft tube which went to the base of the air cleaner I believe. The pcv valve had a hose going to a fitting on the manifold mounted filler tube or the breather cap on the tube. I believe that's correct but someone will correct me if not. The idea was fresh air was drawn into the crankcase through the road draft via the air cleaner and vacuum from the carb pulled air from the crankcase through the filler tube and the pcv valve which regulated the pcv system which is actually a controled vacuum leak used to pull gasses from the crankcase.
Don't connect vacuum to the road draft tube. Find a way to connect it to the base of your air cleaner of put a breather on it. Then connect the pcv valve on the carb to a hose that connects to the driver side valve cover. That will complete your pcv system... Add an oil filler cap to one of the valve covers and you are done.
As for the copper tube near the divoriced choke on the carb I believe it's a vent tube and is not a vacuum port... Not 100% on that though.
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