Does anyone know for a FACT that solid core plug wires will disrupt the ignition on a thunderbolt IV ignition system?

NOPE BUT WHY ON EARTH RUN THEM ??? HUNG-UP ON THE 60'S ??? USE SOME GOOD TAYLOR 409 WIRE OR ONE OF 5 OTHER GOOD ONE OUT THERE

I know for a fact.

Thanks Cord Bobby it was a question that came up around the campfire with the boys and someone asked me if I knew for a fact that they would cause problems and yes I agree that there are some good wires out there that will perform without any interference - crossfire.