Compare/John Deere 450B vs John Deere 840

John Deere 450B vs John Deere 840

Verdict: John Deere 450B vs John Deere 840

The John Deere 450B and the John Deere 840 are both industrial tractors — here is how they stack up on the figures that matter. Both are rated at the same 70 hp. John Deere 450B is the lighter machine (5,307 kg vs 10,400 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 450B is the newer design (1970 vs 1959). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

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Acreage600 acBudgetMain crop / use

Fit & specs

John Deere

Fit score

Best match

Clear

John Deere

Fit score

Best match

Clear

Rated power

70 hp

Confidence

98%

Guide price

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Overview

Manufacturer

John DeereReference

Two speeds, plus reverse, in four ranges.Reference

liquid-cooledReference

Drive

crawlerReference

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Steering

—

powerReference

Variants

830

—

farm tractorReference

450B

crawlerReference

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450B CL

crawler-loaderReference

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Engine

Fuel tank

117.3 LReference

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Engine (gross)

52.2 kWReference

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Engine (net)

48.5 kWReference

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Drawbar (claimed)

33.9 kWReference

52.0 kWReference

Displacement

3.6 LReference

7.7 LReference

Bore/Stroke

102 x 110 mmReference

156 x 203 mmReference

Power (net)

48.5 kWReference

—

Power (gross)

52.2 kWReference

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Air cleaner

dryReference

—

Compression

16.7:1Reference

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Rated RPM

2500Reference

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Idle RPM

800-2650Reference

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Operating RPM

1500-2500Reference

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Torque

223.1 NmReference

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Torque RPM

1500Reference

—

Starter

electricReference

—

Starter volts

12Reference

—

Oil capacity

30.3 LReference

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Coolant capacity

15.1 LReference

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Belt (claimed)

—

56.4 kWReference

Firing order

—

1-2Reference

Transmission

Type

partial power shiftReference

gearReference

Gears

8 forward and 4 reverseReference

6 forward and 1 reverseReference

Clutch

279mm mechanical dry discReference

dry discReference

PTO & Hydraulics

Pump flow

87.1 lpmReference

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Rear PTO Type

1000Reference

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Dimensions

Weight

5307 kgReference

10523 kgReference

Length

277 cmReference

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6405 dozer length

360 cmReference

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6410 dozer length

377 cmReference

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6415 dozer length

347 cmReference

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Height (hood)

144 cmReference

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Height (exhaust)

226 cmReference

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Operating weight

5307 kgReference

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Ground clearance

36 cmReference

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Gauge

132 cmReference

—

Ag front

—

8.25-20Reference

Ag rear

—

18-26Reference

John Deere 450B attachments

450B Serial Numbers

1970

117588Reference

—

1971

121124Reference

—

1972

138714Reference

—

1973

142295Reference

—

1974

164047Reference

—

1975

185799Reference

—

1976

207556Reference

—

Electrical

Charging system

alternatorReference

—

Batteries

2Reference

—

Battery volts

12Reference

—

Battery AH

90Reference

—

John Deere 450B Tracks

Width

172 cmReference

—

Length on ground

184 cmReference

—

Area on ground

1.7 m²Reference

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Ground pressure

0.4 barReference

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840 Serial Numbers

1959

—

8400000Reference

1960

—

8400506Reference

1961

—

8400845Reference

Links

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.