T5 Five speed slant six 74 Dart Sport.

....and I bet that thing would have gotten much better mileage with a 3.55 or even a 3.91 and no matter what you do, you cannot make some folks understand that. Are you listening, @greymouser7 ? Some folks think the lower numerically you go with gear ratio, the better mileage you get and that's just not true at all. If you get an engine so far out of its optimal operating range, you ruin any chance of good economy, not to mention decent power. With that 2.76 gear, I bet you were downshifting with the slightest head wind. That had to SUCK.
Had to stay in first until 25 mph, no tach but it was screaming for a slant, then it lugged in 2nd, never felt like it would recover from a shift.