Diesels are a great untapped resource for mileage gains. I just got 19.3 mpg on a 500 mile trip in my 89 Dodge, and it is running injectors that are 300 % larger than stock. Horsepower is 400 on fuel and 600 with nitrous. I am trying to get an overdrive in the works, as currently I am about 30% past the rpm for peak mileage. Keep in mind this is in a 5000 lb truck that is shaped like a brick.
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1989 Dodge Diesel 972rwhp, 27mpg.
1971 Nova tubbed, solid cam 355 w/nitrous, 8mpg (sorry).
1960 Nash DIY Hybrid Project
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