73 swinger 318 will start run drive. gets to temp dies

If there is a thread on this I could not find it.
I may know the answer though too.

73 318 flame thrower coil
Was coming loose cause firing issues. Relpaced mounting screws which were loose for nuts and bolts.
car fired ran fine. Got warm, quit on the road.
Did i burn out coil due to bad ground?
Ir is there another issue?
Battery cranks strong.
fuel squirts
Butterflys open.
if i let the car sit for an hour, it would start and run for a short while.
I will update in morning, when I go get it.


Suggestions!

Thanks