dwell and points

The simple rules apply: More gap=less dwell less gap=more dwell. Dwell effects timing, timing does not effect dwell. Normally, the stock gap is .010", which gives about 32° of dwell. Dwell is the time in degrees the points are closed ad the spark is being generated. The shorter the firing time in degrees, the longer the primary windings have to soak. It means little at low rpm, but as you get higher, that little time makes a difference. So I set my point cars to 28° of dwell. I have no clue what the point gap is at that point...lol. But I can tell you single points with a stock coil can run over 5500rpm staying stable by doing that.