1977 Mopar V-8: Did ALL 1977’s have LEAN BURN, or just the ones with 4bbl carbs?

In 1976 I purchased a new 1976 Dodge Royal Monaco Brougham with the 400 ELB (first year Lean Burn). The technology was of interest to me so I kept following its development and learned (or so I thought) that although in 1976 Lean Burn was an option ONLY on 400cu in larger sized cars, it was made universal on all Mopar v-8's in 1977. However, yesterday I saw an extremely low mileage 1977 Dodge RMB for sale with a 360 and no Lean Burn, which the owner states was not placed on 360 2bbl cars in...

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Author: watchfatha