The Mighty F-750 TONKA is powered by the Ford-built and proven 6.7-liter Power Stroke® V8 diesel paired with a commercial-grade six-speed TorqShift® HD automatic transmission.,The Mighty F-750 TONKA is powered by the Ford-built and proven 6.7-liter Power Stroke® V8 diesel paired with a commercial-grade six-speed TorqShift® HD automatic transmission.















