My truck is a 86 chevy dually with a 74 350 and a 4bbl carb.
I just changed my plugs, wires, cap, and rotor. It ran fine and sounded good after I changed everything, and then when I was driving down the road it just lost power and started missing really bad. It still starts and drives. I checked to make sure my connections on all my wire towers were tight and they were. I took off my cap, and made sure my connections were tight.
I don’t really know where the problem is. It is NOT a case of a wire being on the wrong tower. I numbered all of them and did them one at a time, and it was running fine right after I changed everything.