Fiat 550 (DT) vs Ford 4000 (A) 6X/6Y

10 material differences · fewer than 12

Tractor one

1968–1978

No measured PTO figure

Tractor two

1964–1975

No measured PTO figure

Which should you choose?

Read our verdict on the 550 (DT) and the 4000 (A) 6X/6Y → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

10 material differences · 7 fields identical or within 5%, which is not counted as material

Fiat 550 (DT) and Ford 4000 (A) 6X/6Y, field by field
Field	550 (DT)	4000 (A) 6X/6Y	Gap
Engine
Engine power, claimed claimed	51.2 hp	51.2 hp	—
Engine declared	FIAT-IVECO 8045	Ford ND 2.506 E or 2.512 E	differs
Displacement declared	3.12 L	3.29 L	+5% 4000 (A) 6X/6Y
Maximum torque declared	137 lb·ft · 186 N·m	—	—
Transmission
Top speed declared	15.5 mph · 25 km/h	12.4–18.6 mph · 20–30 km/h	differs
Clutch declared	Dry FEREDO double clutch with separate PTO control	Dry Borg & Beck double clutch	differs
Hydraulics & hitch
Pump flow declared	5.8 gpm · 21.8 L/min	5.3 gpm · 20.1 L/min	+8% 550 (DT)
Pressure declared	2,843 psi · 196 bar	2,489 psi · 172 bar	+14% 550 (DT)
Three-point lift at ends declared	4,012 lb · 1,820 kg	3,201 lb · 1,452 kg	+25% 550 (DT)
Rear PTO speeds declared	540 rpm	540 rpm	—
Weight & dimensions
Unladen weight declared	4,542 lb · 2,060 kg	4,579 lb · 2,077 kg	—
Wheelbase declared	81.5 in · 2,070 mm	84.5 in · 2,146 mm	—
Length declared	135.0 in · 3,430 mm	138.6 in · 3,520 mm	—
Width declared	66.5 in · 1,690 mm	60.0 in · 1,524 mm	+11% 550 (DT)
Height declared	71.5 in · 1,815 mm	91.0 in · 2,311 mm	+27% 4000 (A) 6X/6Y
Ground clearance declared	16.5 in · 420 mm	17.3 in · 440 mm	—
Turning radius, braked declared	10.3 ft · 3.13 m	10.7 ft · 3.25 m	—
Fuel tank declared	57.1 qt · 54.0 L	63.9 qt · 60.5 L	+12% 4000 (A) 6X/6Y

Source

Source