So it's not the HEI. It's not the old ignition system.
After about 15 minutes of driving it starts to
the bed. Just dies rampantly.
I have replaced the whole
ignition system from the original to HEI to the original I had in my other Eagle. 3 ignition systems and identical issues.
Only thing I can see now is the starter solenoid. Maybe it's heating up and something internally is disconnecting. I know they're simple but I remember a few months ago working on a friends winch that the solenoid went bad in.
Anyone have any other suggestions??