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Leanburn was used well into the 80's. I had an '87 Caravelle and it had the leanburn ignition. My '84 Caravelle also had it.



Lean Burn ended in the late 70's because it was a flop. Chrysler ditched the lean burn carbs but retained the Electronic Spark Control feature which is what the 80's cars had. Somehow so many owners of these systems confuse them for lean burn even tho they don't say lean burn anywhere on them. Electronic Spark Control was a fact of life by that point to get the carbed cars to clean up enough to meet emissions.