The Fiat 634 N resp. 634 NM (military version) was manufactured from 1931 to 1939. The 8.4 litres, six-cylinder engine had a power of 75 to 80 HP. The very solid vehicle had a payload of 6.14 tons, beginning with the second series (1933) 7.64 tons.
Altogether three series of the Fiat 634 N / NM were made. The later series are identifiable by the more aerodynamic driver’s cab and the higher radiator grille. Beginning in 1934, a version propelled by a wood-gas generator was offered - the Fiat 634 G .This Fiat 634 N of the last series was used by a unit of the German Luftwaffe.