11 material differences · fewer than 12

Tractor oneSOMECA 1580 (TD)1979–1983No measured PTO figureTractor twoWHITE 4-1501974–1978No measured PTO figure

Which should you choose?

Read our verdict on the 1580 (TD) and the 4-150 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

11 material differences · 3 fields identical or within 5%, which is not counted as material

SOMECA 1580 (TD) and WHITE 4-150, field by field
Field	1580 (TD)	4-150	Gap
Engine
Engine power, claimed claimed	152.9 hp	151.9 hp	—
Engine declared	FIAT-IVECO 8365.25.500 or 8365.05.501	CATERPILLAR 3208/V-8	differs
Displacement declared	8.10 L	10.43 L	+29% 4-150
Maximum torque declared	423–456 lb·ft · 573–618 N·m	409 lb·ft · 555 N·m	differs
Transmission
Top speed declared	15.5–18.6 mph · 25–30 km/h	18.6 mph · 30 km/h	differs
Clutch declared	—	Pedal-operated dry single-disc clutch	—
Hydraulics & hitch
Hydraulic centre declared	—	Closed centre	—
Pump flow declared	14.7 gpm · 55.8 L/min	20.0 gpm · 75.7 L/min	+36% 4-150
Pressure declared	3,336–3,481 psi · 230–240 bar	—	—
Rear PTO speeds declared	540 rpm / 1000 rpm	1000 rpm	differs
Weight & dimensions
Unladen weight declared	13,228 lb · 6,000 kg	14,500 lb · 6,577 kg	+10% 4-150
Maximum permissible mass declared	22,046 lb · 10,000 kg	—	—
Wheelbase declared	116.7 in · 2,963 mm	115.6 in · 2,936 mm	—
Length declared	170.3 in · 4,325 mm	236.0 in · 5,994 mm	+39% 4-150
Width declared	85.0–108.7 in · 2,160–2,760 mm	80.6 in · 2,048 mm	differs
Height, over the cab declared	109.6 in · 2,785 mm	116.0 in · 2,946 mm	+6% 4-150
Ground clearance declared	27.4 in · 695 mm	27.4 in · 696 mm	—
Fuel tank declared	295.9 qt · 280.0 L	376.2 qt · 356.0 L	+27% 4-150

Source

Source