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New Holland 6640 vs New Holland 7840
Verdict: New Holland 6640 vs New Holland 7840
The New Holland 6640 and the New Holland 7840 are both tractors — here is how they stack up on the figures that matter. New Holland 6640 leads on rated power with 91 hp against 90 hp. New Holland 6640 is the lighter machine (7,099 kg vs 8,076 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. New Holland 7840 holds more fuel (217.6 L vs 94.6 L) for longer stints between fills. In short: choose the New Holland 6640 for outright pulling power, or the New Holland 7840 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
New Holland
85
Fit score
Best match
Clear
New Holland
85
Fit score
Best match
Clear
Rated power
91 hp
90 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
New HollandReference
New HollandReference
Four power shift gears arranged in two synchronized ratio groups (1-4 and 5-8). Two synchronized ranges (low/high) and right-hand shuttle. Clutch must be used to shift range or move between the lower (1-4) and higher (5-8) gear ratio groups. Push-button power shifting between the four gears in a ratio group. Push-button de-clutching on the shuttle lever allow shifting without the foot clutch. The 16 power shift was standard on the 6640 SLE.Reference
Four power shift gears arranged in two synchronized ratio groups (1-4 and 5-8). Two synchronized ranges (low/high) and right-hand shuttle. Clutch must be used to shift range or move between the lower (1-4) and higher (5-8) gear ratio groups. Push-button power shifting between the four gears in a ratio group. Push-button de-clutching on the shuttle lever allow shifting without the foot clutch. The 16 power shift was standard on the 7840 SLE.Reference
Drive
4x4 MFWD 4WD (optional)Reference
4x4 MFWD 4WD (optional)Reference
Final drives
inboard planetaryReference
inboard planetaryReference
Differential lock
electro-hydraulic (SL/SLE)Reference
electro-hydraulic (SLE)Reference
Brakes
hydraulic wet disc (SL/SLE)Reference
hydraulic wet disc (SL/SLE)Reference
Original price
—
$35,650 (1996)Reference
Engine
Fuel tank
177.5 LReference
217.6 LReference
Engine (gross)
67.6 kWReference
—
Engine (net)
63.4 kWReference
—
Drawbar (tested)
50.1 kWReference
56.1 kWReference
Displacement
5.0 LReference
6.6 LReference
Bore/Stroke
112 x 127 mmReference
112 x 112 mmReference
Power (net)
63.4 kWReference
—
Power (gross)
67.6 kWReference
—
Air cleaner
dual paper elementsReference
—
Compression
17.5:1Reference
17.5:1Reference
Rated RPM
2200Reference
2100Reference
Idle RPM
725-2375Reference
725-2275Reference
Torque
457.0 NmReference
—
Torque RPM
1200Reference
—
Firing order
1-3-4-2Reference
1-5-3-6-2-4Reference
Starter volts
12Reference
12Reference
Coolant capacity
16.0 LReference
21.5 LReference
Intake valve clearance
0.406 mmReference
0.406 mmReference
Exhaust valve clearance
0.483 mmReference
0.483 mmReference
Oil capacity
60.6 LReference
60.6 LReference
Max power
50.1 kWReference
56.1 kWReference
Power at rated engine speed
57.2 kWReference
67.4 kWReference
Transmission
Transmission
ElectroShift/Pulse CommandReference
ElectroShift/Pulse CommandReference
Gears
16 forward and reverseReference
16 forward and reverseReference
Clutch
wet discReference
wet discReference
PTO & Hydraulics
PTO (claimed)
56.7 kWReference
67.1 kWReference
PTO (tested)
57.5 kWReference
67.4 kWReference
Type
four-speed power shiftReference
four-speed power shiftReference
Valves
1 to 4Reference
1 to 4Reference
Pump flow
79.5 lpmReference
75.7 lpmReference
Steering press.
144.8 barReference
144.8 barReference
Rear Type
IIReference
IIReference
Control
Position control and top-link draft sensing. Electronic lower-link sensing optional on 6640 SLE.Reference
Position control and top-link draft sensing. Electronic lower-link sensing optional on 7840 SLE.Reference
Rear lift (at 24"/610mm)
2977 kgReference
3950 kgReference
Rear PTO
independentReference
independentReference
Rear PTO Type
540/1000Reference
540/1000Reference
Power at rated PTO speed
56.4 kWReference
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Dimensions
Wheelbase
236 cmReference
—
Weight
7099 to 9121 poundsReference
8076 to 10274 poundsReference
Front tire
7.50-16Reference
10.00-16Reference
Rear tire
16.9-30Reference
18.4-34Reference
Ag front
7.50-16Reference
10.00-16Reference
Ag rear
16.9-30Reference
18.4-34Reference
Length
411 cmReference
447 cmReference
2WD Width
195 cmReference
—
4WD Width
203 cmReference
—
2WD Clearance (front axle)
55 cmReference
58 cmReference
4WD Clearance (front axle)
50 cmReference
55 cmReference
2WD ROPS Shipping
3220 kgReference
3663 kgReference
4WD ROPS Shipping
3670 kgReference
4143 kgReference
2WD Cab Shipping
3687 kgReference
4179 kgReference
4WD Cab Shipping
4137 kgReference
4660 kgReference
Operating
3690 kgReference
—
Ballasted
4702 kgReference
—
2WD Wheelbase
—
269 cmReference
4WD Wheelbase
—
261 cmReference
Width
—
210 cmReference
New Holland 6640 attachments
6640 Serial Numbers
1991
BC68791Reference
BC68791Reference
1992
BD02865Reference
BD02865Reference
1993
BD35935Reference
BD35935Reference
1994
BD65544Reference
BD65544Reference
1995
BD98440Reference
BD98440Reference
1996
021630BReference
022132BReference
1997
056502BReference
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1998
083503BReference
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Location:
Data plate inside hood.Reference
Data plate inside hood.Reference
Electrical
Ground
negativeReference
negativeReference
Charging system
alternatorReference
alternatorReference
ROPS Charging amps
55Reference
—
Cab Charging amps
100Reference
—
ROPS Batteries
1Reference
—
Cab Batteries
2Reference
—
Battery CCA
800Reference
800Reference
Battery volts
12Reference
12Reference
Charging amps
—
100 (cab)Reference
Batteries
—
2 (cab)Reference
Attachment overview
New Holland 6640 Height
Hood
170 cmReference
177 cmReference
Cab
271 cmReference
279 cmReference
Exhaust
284 cmReference
289 cmReference
Test results
Fuel use
17.0 l/hourReference
22.3 l/hourReference
Max pull
4768 kgReference
—
Speeds
New Holland 7840 attachments
7840 Serial Numbers
New Holland 7840 Height
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.