hello, i have a 1969 road runner 440
new to the forum, can anyone tell me which side of the edelbrock carb does my vac advance vac hose go

on an external coil distributor, ive read it goes on the left side but when i put in on the ported vacum side the
engine idles ok but runs way bad at wot i move it back to the right side and set timimng at 8 btdc it runs great? am i way off or what.
thanks for any help, general