Compare/International Harvester TD-6 vs International Harvester Type A 20HP

International Harvester TD-6 vs International Harvester Type A 20HP

Verdict: International Harvester TD-6 vs International Harvester Type A 20HP

The International Harvester TD-6 and the International Harvester Type A 20HP are both tractors — here is how they stack up on the figures that matter. International Harvester TD-6 leads on rated power with 22 hp against 20 hp. International Harvester Type A 20HP is the lighter machine (5,443 kg vs 7,280 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester Type A 20HP holds more fuel (94.6 L vs 75.7 L) for longer stints between fills. International Harvester TD-6 is the newer design (1940 vs 1908). In short: choose the International Harvester TD-6 for outright pulling power, or the International Harvester Type A 20HP if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Acreage600 acBudgetMain crop / use

Fit & specs

International Harvester

Fit score

Best match

Clear

International Harvester

Fit score

Best match

Clear

Rated power

22 hp

20 hp

Confidence

40%

Guide price

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Overview

Manufacturer

International HarvesterReference

Diesel 5-speed crawlerJune 25 - July 10, 1951Link: Nebraska Tractor Test 462 fileReference

liquid-cooledReference

Total built

38,450Reference

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Drive

crawlerReference

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Final drives

bull gearReference

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Variants

T-6

gasoline engineReference

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TD-6

diesel engineReference

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Engine

Fuel tank

75.7 LReference

94.6 LReference

Aux. fuel

2.5 LReference

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Drawbar (claimed)

16.4 kWReference

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Belt (claimed)

23.1 kWReference

14.9 kWReference

Plows

4Reference

Drawbar (tested)

23.7 kWReference

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Belt (tested)

28.5 kWReference

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Displacement

4.1 LReference

14.8 LReference

Bore/Stroke

98 x 133 mmReference

222 x 381 mmReference

Air cleaner

oil bathReference

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Rated RPM

1450Reference

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Firing order

1-3-4-2Reference

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Starter

gasoline ignitionReference

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Starter volts

12Reference

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Oil capacity

8.5 LReference

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Coolant capacity

39.7 LReference

219.6 LReference

Belt power (max)

28.5 kWReference

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Max power

23.7 kWReference

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Operating RPM

—

240-290Reference

Starter type

—

hand-crankReference

Transmission

Type

gearReference

Gears

5 forward and 1 reverseReference

1 forward and reverseReference

PTO & Hydraulics

Rear PTO Type

540 (1.375)Reference

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Dimensions

Weight

7280 to 7800 poundsReference

5443 kgReference

Length

264 cmReference

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Height

184 cmReference

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Gauge

127 cmReference

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Shipping

3392 kgReference

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Rear tire

—

56x18Reference

Ag rear

—

56x18 (steel)Reference

TD-6 Serial Number Location

TD-6 Serial Numbers

1940

TDBK501Reference

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1941

TDBK4435Reference

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1942

TDBK8191Reference

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1943

TDBK9297Reference

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1944

TDBK9581Reference

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1945

TDBK10828Reference

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1946

TDBK12056Reference

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1947

TDBK14516Reference

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1948

TDBK17349Reference

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1949

TDBK21146Reference

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1950

TDBK24862Reference

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1951

TDBK27536Reference

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1952

TDBK31056Reference

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1953

TDBK33157Reference

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1954

TDBK35746Reference

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1955

TDBK37470Reference

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1956

TDBK38706Reference

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Capacities

Diameter

31 cmReference

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Width

134 cmReference

259 cmReference

RPM

811Reference

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International Harvester TD-6 Tracks

Length on ground

149 cmReference

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Area on ground

0.8 m²Reference

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Test results

Belt fuel use (max)

10.2 l/hourReference

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Max pull

3688 kgReference

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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.