hey dav
you say advance 5 deg now where would the BB be then just above the marker or below ,, my car runs well now were it is i just wanted to make sure its the best it can be ,, thats why i wanted to know by turning the dizzy clockwise is that advance ???

thanks guya

1958 chevy biscayne
235 6 cyl 1 barrel
2 speed PG tranny