I can believe that if you take a high torque engine and gear it so youre barely working it to get down the road, you can get better mpg. I have found with more than one of my cars that a 3.1 engine will give 2-3 better mpg than the same car with a 2.8 engine (3.1 is just a stroked 2.8). There was also a guy who put a 3800SC into a Citation and said that 35 mpg was easy if he kept his foot out of it, but he built it for performance. After installing the mpguino in my Trans Sport van (3800, 3.06 final drive), I was able to get 27-28 mpg just one day of going to work and back. Im sure going downstate and back would yield even better. If I were to take the powertrain from the van, put it into an a-body which is 900 lbs lighter and much less wind profile, and swap in a 2.84 final drive, I bet I could get some pretty high numbers.
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Winter daily driver, parked most days right now
Summer daily driver
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