David Brown 3800 Selectmatic vs John Deere 930

10 material differences · fewer than 12

Tractor one

1968–1971

No measured PTO figure

Tractor two

1974–1977

No measured PTO figure

Which should you choose?

Read our verdict on the 3800 Selectmatic and the 930 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

10 material differences · 4 fields identical or within 5%, which is not counted as material

David Brown 3800 Selectmatic and John Deere 930, field by field
Field	3800 Selectmatic	930	Gap
Engine
Engine power, claimed claimed	42.0 hp	40.5 hp	—
Engine declared	—	John Deere 3.164 DL 15	—
Displacement declared	—	2.70 L	—
Maximum torque declared	115 lb·ft · 156 N·m	107 lb·ft · 145 N·m	+8% 3800 Selectmatic
Transmission
Top speed declared	15.5 mph · 25 km/h	16.8–18.6 mph · 27–30 km/h	differs
Clutch declared	Pedal-operated, dry and two-stage BORG & BECK double clutch	Pedal operated, two-stage dry Fichtel & Sachs double clutch	differs
Hydraulics & hitch
Hydraulic centre declared	—	Open centre	—
Pump flow declared	8.5 gpm · 32.0 L/min	6.7 gpm · 25.4 L/min	+26% 3800 Selectmatic
Pressure declared	—	3,481–4,496 psi · 240–310 bar	—
Three-point lift at ends declared	1,598 lb · 725 kg	3,490 lb · 1,583 kg	+118% 930
Rear PTO speeds declared	540/1000 rpm	—	—
Weight & dimensions
Unladen weight declared	3,351 lb · 1,520 kg	4,817 lb · 2,185 kg	+44% 930
Maximum permissible mass declared	—	7,055 lb · 3,200 kg	—
Wheelbase declared	75.8 in · 1,926 mm	74.4 in · 1,890 mm	—
Length declared	116.0 in · 2,946 mm	136.2 in · 3,460 mm	+17% 930
Width declared	65.5 in · 1,664 mm	66.5 in · 1,690 mm	—
Height declared	51.5 in · 1,308 mm	89.8 in · 2,280 mm	+74% 930
Ground clearance declared	17.5 in · 445 mm	12.8 in · 325 mm	+37% 3800 Selectmatic
Turning radius, braked declared	9.8 ft · 3.00 m	9.6 ft · 2.92 m	—
Fuel tank declared	38.5 qt · 36.4 L	66.0 qt · 62.5 L	+72% 930

Source

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