Gets hot and stalls out
As a fuel chemist, I detest ethanol in fuel
Me too.
When really hot out my car would do the same thing but from a stop light, start to move at about 25 mph everything fine then engine looses power, lift off he pedal and it would recover and be find after that.
I have video of my (at one time) clear fuel filter running dry but maintaining 5-7 lbs pressure to the carb. Then the carb would start to run dry, the float would open and a rush of liquid gas would flow in refilling the filter and the bowel.
I switch to non alcohol gas from Maverick
And I don't have that problem anymore.
And I have tried to reproduce it several times.
No changes to the stock 67 273 engine and fuel system.