The Dodge/Chrysler 400 is basically a bored 383. It uses the 440 bore size and the 383 stroke length. If it is the plastic FANTASTIC carb, I understand it had many issue once it had some age on it. Find someone who knows the carb. I never turned a wrench on one of those carbs. I mainly messed with Hilbron constant flow injection on my OLD Early Hemi's. Also some 400 were built with the "Lean Burn" system on them. If it is one of them, you can tell by the electronics in the air filter if you still have the stock air filter housing, your best bet would be to change the entire induction and ignition system to earlier parts to get the engine to run right.
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Today's Featured Article - Farmall 460: That's My Girl - by LeAnn R. Ralph. How many sounds can you think of that are as familiar to you as your own breathing? What about the hum of your refrigerator? Or the thump of your clothes dryer? Maybe the engine of your car? You hear those sounds every day, and you don't think much about them, do you. I can think of a few common, ordinary sounds in my daily life, too.
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