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David Brown 40TD vs David Brown 770 Selectamatic

Verdict: David Brown 40TD vs David Brown 770 Selectamatic

The David Brown 40TD and the David Brown 770 Selectamatic are both tractors — here is how they stack up on the figures that matter. David Brown 40TD leads on rated power with 39 hp against 32 hp. David Brown 770 Selectamatic is the lighter machine (3,110 kg vs 8,050 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. David Brown 40TD holds more fuel (263.8 L vs 43.1 L) for longer stints between fills. David Brown 770 Selectamatic is the newer design (1965 vs 1960). In short: choose the David Brown 40TD for outright pulling power, or the David Brown 770 Selectamatic if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Fit & specs
David Brown 40TD Tractor
David Brown
62
Fit score
Best match
Clear
David Brown 770 Selectamatic Tractor
David Brown
62
Fit score
Best match
Clear
Rated power
39 hp
32 hp
Confidence
40%
40%
Guide price
Overview
Manufacturer
David BrownReference
David BrownReference
liquid-cooledReference
liquid-cooledReference
Drive
crawlerReference
Final drives
spur gearReference
Differential lock
mechanical rearReference
Engine
Fuel tank
263.8 LReference
43.1 LReference
Drawbar (claimed)
24.6 kWReference
Displacement
2.7 LReference
2.4 LReference
Bore/Stroke
92 x 102 mmReference
100 x 102 mmReference
Rated RPM
2200Reference
2055Reference
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Oil capacity
54.0 LReference
27.3 LReference
Coolant capacity
15.9 LReference
11.4 LReference
Engine
26.8 kWReference
Plows
2Reference
Power
26.8 kWReference
Fuel system
direct injectionReference
Compression
17:1Reference
Idle RPM
700-2000Reference
Torque
135.6 NmReference
Torque RPM
1400Reference
Firing order
1-2-3Reference
Transmission
Type
gearReference
gearReference
Gears
6 forward and 2 reverseReference
12 forward and 4 reverseReference
Clutch
305mm dry discReference
dry discReference
PTO & Hydraulics
PTO (claimed)
29.1 kWReference
23.9 kWReference
Rear PTO Type
540 (1.375)Reference
540 (1.375)Reference
Engine RPM
2360@1800Reference
540@1620Reference
Pressure
137.9 barReference
Pump flow
25.0 lpmReference
Rear Type
IReference
Control
position and draft controlReference
Rear lift (at ends)
725 kgReference
Rear PTO
liveReference
Dimensions
Weight
8050 to 8450 poundsReference
3110 to 3270 poundsReference
Length
287 cmReference
285 cmReference
48G Width
160 cmReference
56G Width
180 cmReference
Height (hood)
157 cmReference
Gauge
142 cmReference
48G Shipping
3651 kgReference
56G Shipping
3696 kgReference
48G Operating
3787 kgReference
56G Operating
3832 kgReference
Wheelbase
190 cmReference
Front tire
6.00-16Reference
Rear tire
12.4/11-28Reference
Ag front
5.50-16Reference
Ag rear
11.2/10-28Reference
Height (steering wheel)
140 cmReference
Height (exhaust)
204 cmReference
Clearance (drawbar)
27 cmReference
Front tread
121/132/142/152/162/172/182/193 cmReference
Rear tread
121/132/142/152/162/172/182/193 cmReference
Shipping
1410 kgReference
Operating
1483 kgReference
David Brown 40TD Tracks
Width
40 cmReference
162 cmReference
Capacities
Diameter
21 cmReference
RPM
2023Reference
Speed
944.88 meters/minReference
Max capacity
2027 kgReference
Electrical
Ground
negativeReference
Battery volts
12Reference
Battery AH
96Reference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.

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