So I got my 67 running with a craigslist 4160. I rebuilt the carb, and it runs great, but the question is where can I take my vac advance from for the distributor? Is it supposed to be a full vac port or a timed vac port? The only vac ports on my holley is one that leads to the airhorn and is L shaped (drops down from right next to the secondary openings in the top of the carb and the tube points out to the rear), and the other is the choke inlet which is supposed to take hot air in from the exhaust.
Well. Nevermind. I figured it out by searching google. Ha. Who would have thought? The timed vac port is on the left (passenger) side of the carb located above the idle adjustment screw on the metering plate. Mine is missing. I guess that the vac leak was minimal enough for me to tune through without noticing. Anyway.. Off to the hardware store for a nipple to plug into the hole. (that sounds weird.)