A lot of D owners use an ACTRON Tach Dwell Voltmeter Model CP7605 to set their dwell. (Another for $22.99 total, used.) Like many others, you simply...
The six plugs will all fire in sequence no matter where the plugs are. Now with two wires swapped, those plugs may fire at any of the four cycles of...
For the first part- When it is <15°C, the dwell should be 50-60° = 25-30° on 8-cyl scale, steady. Your's is 3° below the minimum. Given that, 1. and...
There was an otterstat that turned at a lower temp that Hervey use to sell. I had one on my car and the fans kick on just a hair above the 1/4 mark....