360 engine help

I understand the frustration, since you've covered just about everything :banghead:.

I hesitate to think that the carb is the problem at this point, but all I can offer is to make sure all the ignition related wire connections are good and clean, along with the mounting/grounding of the ignition box. After that, maybe swap to a known good coil?

Good luck :thumleft:. Keep us informed on what you find.