All, as always thanks for your replies and thoughts. I already purchased a new coil going to throw that on today. Spark plugs look good. Previously installed a new fuel line from the fuel pump to the carb, kept it away from the engine and wrapped it with insulation. But the design of the engines with the carburetor right above the exhaust manifold always leads me to think the fuel in the carburetor is boiling. Why on this 49 and not others? I don’t know. A couple of thoughts I’m going to pursue are installing a heat shield under the carb and possibly wrapping the exhaust manifold with the type of insulation that hot rodders put on open headers. My German ancestry suggest I won’t give up, lol. But will do all this one step at a time and let you know what happens!
With all due respect (I really do actually mean that), it would be more beneficial to actually test for spark once the engine dies on you the next time. If you simply throw a new coil on it you won't know for certain if your current coil is failing once it is getting hot from internal faults.
Why is this important to the Stovebolt World? We will all eventually find ourselves on the side of the road a long way from home with a similar dire situation. If you were to go through this diagnostic work and come back to us with the result that your coil temporarily conks out
when it gets hot, we will all have that information so that we can confidently rescue ourselves when this happens to us.
A faulty fuel pump, or drifting debris in the gas tank will give you a similar temporary no-start situation, but those are harder to diagnose.
Checking for spark as soon as the engine dies is very easy and definitive.
