My Chevelle starts fine and idles fine. But, once I drive it for about 10-15 min, it will just shut off. If I try to start it, it will turn but won't start. It doesn't sputter as if it's trying to start either. If I wait ~5 min, it will start just fine. Then I can go about two blocks before it shuts off again. It doesn't spit or sputter when it shuts off, it just stops dead. I thought maybe it might be the coil or the Pertronix module. The Pertronix module is about 9 years old and has never been replaced. Any ideas? I really need to get it running, because I'm missing out on all the cruises/shows. 
