[stope4]

O.k. readjusted distributor one tooth ccw and no more backfire thru carb or whatever was causing the smoke. Starts pretty easy. Set base timing at 9 degrees btdc. Also, no more pinging when accelerating.

Question,
the dist vac is connected to front of carb. Very little vac at idle but there is a tiny little. I assume this is ported vac. There's another port on front of carb that has full vac at idle. I assume this is engine vac. Which one should dist be connected to? Does either make a difference on where to set timing?