Hei conversion troubleshooting

Ok, I soldered all the connections back up and tried again with the HEI, same problem.



Unhooked the advance and tried. Set base timing to 10. Still does it. Advanced more, same problem, retarded it same problem.



The module is mounted tightly to the mount plate and distributor.



Correct. With any combination of the above parts I have the same problem. Put points back on car runs fine.

Is it possible that when you swapped the distributor wires that you didn't reset the initial timing to compensate?
It might be close enough to run crappy one way, but be too far off with the correct orientation.
Swapping those wires changes the initial timing point quite a bit.