It depends:
There was a 140 HP and a 208 HP engine also available.
The power of the engine and the maximum speed of the 1957 Nash Ambassador automatic are 255 bhp at 4700 rpm and 60 mph respectively.
The maximum speed of the Nash ambassador automatic 8cyl 208hp 1955 is $ 2700.
The power of the engine and the maximum speed of the 1955 Nash Metropolitan are 42 hp and 75 mph (121 km/h) respectively.
Nash Ambassador was created in 1927.
It has 42 h.p. with a top speed of 71 mph.
There was a 42 HP and a 52 HP engine available.
Monty Nash - 1971 The Ambassador's Daughter 1-7 was released on: USA: 29 October 1971
115 HP, manual 3 speed, 83 mph.115 HP, manual 4 speed, 92 mph. 115 HP, automatic with overdrive, 92 mph.
The power of the engine and the maximum speed of the Nash rambler 1957 is 4.1 liter engine which is naturally aspirated, overhead valve, 6 cylinder unit that has an output of 190 bhp (193 PS/142 kW) of power at 3800 rpm.
The 1949 Nash Ambassador has to be near the top of the list, IMO.
Victor Erle Nash-Williams died in 1955.