Ok guys I want to make sure I have this right. I just installed a rebuilt Carb on my truck (1968 c10, 250cid, manual choke, rochester 1bbl). There are 2 vacuum nipples on the carb,one on the drivers side (next to the mixture screw), and one on the passenger side up near the throat.
Which one should be running to the Vacuum advance on the distributer, or does it matter? Currently I'm using the bottom (with the other one capped) and it seems to be running good.