I'll try to make this short. 75 Dodge truck 440 motor stock electronic distributor orange box. last few days truck would die after driving for a while, would not start, no spark. sit for a while then it would start right up and run fine. did this a few times, so today I brought an extra control box, ballast resistor, and coil. drove around until it did it again. no start no spark. changed The Orange Box nothing, change the ballast nothing, change the coil started but was backfiring and would not stay running. finally gave up had to be towed. now after sitting for a couple hours I can't believe it but it started right up and ran fine. idles perfect. Ideas please???