Timing Retarded

V-8 or slant 6? I like to set my 273 points on the lower side of specs (wider gap)
so when the points and rubbing blocks wear, they stay in spec longer and arc less. Coil saturation (voltage build up) is'nt as good but I doubt you could feel the difference in the seat of your pants. I use a rule of thumb of 10* initial timing and then tune from there.