About 6 or 8 with the low 50 mph cruise these old trucks were made for. You didn't say what size engine, but don't think would matter. These were work trucks, not highway cruisers, gas was cheap then also. MPG not a real issue then.


G.L. Grumpy's
Old Iron Ranch
Huntington, IN 46750


MM R tractor, Speedex
and Power King tractors