I drove the truck up and down about 220 miles crossing the Alleghenies to get to the cabin. I doesn’t want to rev smoothly above 2500 rpm’s or so. Sometimes I hear a blub, blub, blub sound when I’m giving it gas above 2500. I could climb the mountains ok, just keep it below 2500 or so. Today I gave it new points, condenser, and rotor. The old rotor was bent on top, I thought that was going to be it. I pulled all the plugs, they’re all white. The pictures are of 3 and 4. #3 was only hand tight. Am I running too lean? Edelbrock 354 with progressive linkage. I think I have all 3 carbs with .53 jets or possibly .51 jets in the outside carbs. The plugs are at least 2 years old, Autolite 46. The engine is a 239 bored +.125 with a 312 crank. I rpm’s.

  Dennis in Lititz PA