vacuum advance

furydan said

I am running a 318 bored 40 over with kb pistons, comp 286 cam, 302 heads with an edlebrock carb and intake. I also have electronic ignition. My question is: Should I run the vacuum advance off of the timed port on the carb or the full manifold port off the carb. I have a choice. Right now I am running off of the timed port.
Dan

Click to expand...

if you want full manifold vac. then you need to set your dist. up for it. i'm running full manifold vac. in my car. initial timing is at 14* but at idle with the vac advance its at 30*. the car idles smoother, is peppier at lowwer/cruise speeds and light throttle and it seems to be running about 5* cooler.

i have 20* mechanical advance ( all in at about 3100 rpm) ad 16* of vac advance.

good thread about it here: look at greg_moreira posts... http://board.moparts.org/ubbthreads/showflat.php?Cat=0&Number=6813633&an=0&page=0#Post6813633