I called MSD today and they said it was normal. I borrowed some moroso 40 wires and still the same. Changed from autolites to ngk and cleaned up grounds on both heads , block and frame new rotor and cap and still the same. I'm not going to pull my hair out , but just trying to figure out what is causing this. BTW the plugs are gapped at 35. Thanks for the replies.

If it's flashing it's leaking,bud.need to figure out how to keep that energy from escaping.You want that electricity arcing in your cylinders,not under your hood :D