The Vortec distributor is a known problem.
Does the distributor rotor TURN when you crank the engine? "Spark" is dependent on the crank sensor. The distributor gear can be worn to nubs, the coil will still fire. But the spark may not go to the correct cylinder--which makes the engine stall and not re-start.
I still say this could be a fuel issue--faulty injector harness or some-such. But if you decide to pull the distributor, you might find excess wear on the gear at the bottom.
Does the distributor rotor TURN when you crank the engine? "Spark" is dependent on the crank sensor. The distributor gear can be worn to nubs, the coil will still fire. But the spark may not go to the correct cylinder--which makes the engine stall and not re-start.
I still say this could be a fuel issue--faulty injector harness or some-such. But if you decide to pull the distributor, you might find excess wear on the gear at the bottom.