5.2 magnum A833 2.93 Highway MPG

To maximize with a carb, there are drop-in, standalone electronic ignition conversions (optical versus magnetic) that provide the mechanical advance curve and add a MAP sensor to provide a reliable advance control based on vacuum, all adjusted with an ap on your phone. I don't know if they make one for this.

When selecting overall gearing including tire od, I shoot for 10-11mph in first at 2000 rpm and under 3000 at 70 mph for a low bsfc near the torque peak. It's interesting how many overlooked truck trannys will do that with the right tire and diff.