Compare/McCormick-Deering O-6 vs McCormick-Deering T-40

McCormick-Deering O-6 vs McCormick-Deering T-40

Verdict: McCormick-Deering O-6 vs McCormick-Deering T-40

The McCormick-Deering O-6 and the McCormick-Deering T-40 are both tractors — here is how they stack up on the figures that matter. McCormick-Deering T-40 leads on rated power with 35 hp against 34 hp. McCormick-Deering O-6 is the lighter machine (2,408 kg vs 5,792 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. McCormick-Deering T-40 holds more fuel (159.0 L vs 79.5 L) for longer stints between fills. McCormick-Deering O-6 is the newer design (1940 vs 1937). In short: choose the McCormick-Deering T-40 for outright pulling power, or the McCormick-Deering O-6 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

McCormick-Deering

Fit score

Best match

Clear

McCormick-Deering

Fit score

Best match

Clear

Rated power

34 hp

35 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

McCormick-DeeringReference

McCormick-Deering (a part of International Harvester)Reference

liquid-cooledReference

Gasoline 5-speed crawlerMay 4 - 14, 1937Link: Nebraska Tractor Test 281 fileReference

Total built

—

1,313Reference

Drive

—

crawlerReference

Variants

W-6

standardReference

—

O-6

orchardReference

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OS-6

orchard without full sheet metalReference

—

ODS-6

diesel OS-6Reference

—

I-6

industrialReference

—

ID-6

diesel industrialReference

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Engine

Fuel tank

79.5 LReference

159.0 LReference

Aux. fuel

3.3 LReference

—

Drawbar (claimed)

25.0 kWReference

26.1 kWReference

Belt (claimed)

28.7 kWReference

33.6 kWReference

Displacement

4.1 LReference

4.9 LReference

Bore/Stroke

98 x 133 mmReference

95 x 114 mmReference

Compression

4.5:1 (kerosene)Reference

—

Rated RPM

1450Reference

1750Reference

Drawbar (tested)

—

33.0 kWReference

Belt (tested)

—

38.5 kWReference

Coolant capacity

—

45.4 LReference

Belt power (max)

—

38.5 kWReference

Max power

—

33.0 kWReference

Transmission

Type

gearReference

Gears

5 forward and 1 reverseReference

Clutch

—

dry discReference

PTO & Hydraulics

Rear PTO Type

540Reference

—

Dimensions

Wheelbase

193 cmReference

—

Weight

2408 kgReference

5792 kgReference

Front tire

6.00-16Reference

—

Rear tire

13-26Reference

—

Ag front

6.00-16Reference

—

Ag rear

13-26Reference

—

Length

338 cmReference

358 cmReference

Height

161 cmReference

165 cmReference

Clearance (front axle)

38 cmReference

—

Front tread

118 cmReference

—

Rear tread

114 cmReference

—

Capacities

Diameter

27 cmReference

—

Width

165 cmReference

RPM

899Reference

—

Speed

788.82 meters/minReference

—

T-40 Serial Numbers

1937

—

6652Reference

1938

—

7921Reference

1939

—

8706Reference

Location:

—

Seat, right sideReference

Test results

Max pull

—

4333 kgReference

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.