My '56 Bird, restored vehicle, has run strong and trouble-free for 20,000+ miles. Lately--happened 4 times now--it cuts out (really suddenly, as if someone has pulled the coil wire). Has happened hot or cold, at idle and under full load at 40 mph. When this occurs it will crank and crank, but won't restart.

Wait around for a minute or two, and it starts and runs perfect, like nothing was ever wrong.

I've cleaned the battery connections, replaced points, condenser, made sure distributor and coil wires are tight, performed visual check of other wires....just common sense stuff. I can tell you that it feels more electrical-oriented rather than fuel delivery, but that's just my opinion.

What should I check next? Ballast resistor? Any and all advice appreciated.