We've had some similar problems with some of our vehicles after they switched to E10 blended fuel. The problem occurs when the metal fuel lines heat up past the E10 separation point of 128 degrees F. This is most likely to happen when you shut the engine off, restart and as soon as the carb fuel chamber empties the engine dies. The heat buildup where the metal fuel line crosses over the front of the valve cover and exhaust manifold causes the separation. This "vapor lock" appearing phenomena shows up as "0" fuel pressure on the pressure gauge directly in front of the carbs. Applying a wet rag just before the fuel bowls empty will immediately restore fuel pressure. Adding an electric pump has no effect on correcting this annoying condition.
The key to overcoming this problem is making sure your fuel line between the thermostat housing and valve cover is insulated to avoid heat-soak. A wet rag applied to the line will instantly correct the problem or in my case, popping the hood to let the hot air escape works every time.
I can't say this is YOUR exact problem but if your ignition system is up to par, you might try the "wet rag" right before the engine stalls out.
Dave
