1984 Wagoneer Has 3.88 gears. Still 2bbl Motorcraft 2150 Carb. 3in. exhaust and Magnaflow muffler (too loud unfortunately), did a TFI coil conversion (Jeep trick) and Transgo stage 2 shift kit went from 11-12 to 15 mpg. Did you go for the Edelbrock carb and manifold? Like you, I am very interested in mileage while retaining 4WD and towing. I did use a Globtec GPS logger for a while - not enough info. Will be installing a tachometer and Vacuum gauge soon.
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