Never ending battle. . . . been driving my 69 C-10 since restoring and it and has killed for no reason I can think of. 427, Speed deamon 750DP on an edelbrock, mild engine that was built 20 years ago, carb last year. Has about 10k miles. GM HEI Driving at 25 mph it suddenly killed, another day at the stop sign and the 3rd backing up in the driveway. It started all 3 times with a good bit of time, thought the battery would run out. It like it runs out of gas. See if your thoughts match mine!?