Electric issue?

Hi all.

Here's what's going on:

Car has a Holley 650 on a 360, car will start as normal in the morning after one or 2 pumps. After it starts I usually pump a bit more and then use the choke to warm it up a bit, then off to the road.
9 out of 10 times the car will die on the road at some point in the next mile and won't turn on again. I have to wait a couple of minutes and it will fire as normal and spend the whole day without any issues.

What the hell can be causing that?
I have replaced the fuel filter and pump and very convinced it's a electrical issue.

So I believe we have a few options:
-voltage regulator
-coil
-ecu?
-distribuitor

Main question is would a voltage regulator cause that and why? Though the VR was to charge the battery only but had some people suggesting the VR may be the cause.

Thank you.

View attachment 1715767849


Just looking at the ECU. Take out the bolt holding it to the inner fender, Clean the paint off the inner fender down to bare metal under the bolt, Also, clean off the paint on the other side of the bolt hole in the ECU. Do this to get the best possible contact to ground for the ECU as grounding of it is a common problem.

I don't think its a ballast resistor as I don't think the problem would go away . As you stated, Once you restart the car it runs fine.