Quote:
Originally Posted by 36coupe
Could the black case have more windings or be heavy duty someway?
Here is a close up of the aftermarket stamp.
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I think that is exactly the idea (design) with the black one - more windings. I am only guessing here but in 1942, Ford changed the coil design to look a lot like the black one you have AND they moved it away from the front of the engine. Why? My guess is Ford knew (finally figured out) that the location and design of the coils '37 through '41 was not real good. A larger coil (more windings) and moved away from a "heat sink" proved to be a much better design.