My 1940 Ford project doesn't have any spark so I pulled the coil and sent it to Skip in Florida and a friend of mine has an old Sun machine and can rebuild and setup the distributor. When I pulled the 3 bolt coil, there was a button or spacer between the end of the cam and the distributor. On Iron trap Garage, they pull a distributor on a 1939 Ford and they have the same spacer. They make a comment that it could be a later model engine but don't go into detail. Antone know about these spacers?
I recall being told about that on Ford Barn. But I had a different experience. I had a 59 block I wanted to use the crab distributor on a 221 I had because the coil (like your coil) was bad. But the crab distributor would not make it to the block after the slot was engaged in the cam. That’s when I learned of different cam lengths.
I had to get the spacer when I decided to swap the factory crab distributor on my C59A to the helmet style. Kept the orig cam that came with engine. Also needed to swap the cam cover from 2-bolt to 3-bolt .
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