Compare/International Harvester 986 vs International Harvester TD-18A Series 182

International Harvester 986 vs International Harvester TD-18A Series 182

Verdict: International Harvester 986 vs International Harvester TD-18A Series 182

The International Harvester 986 and the International Harvester TD-18A Series 182 are both tractors — here is how they stack up on the figures that matter. International Harvester 986 leads on rated power with 106 hp against 103 hp. International Harvester TD-18A Series 182 is the lighter machine (9,752 kg vs 10,500 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester 986 is the newer design (1976 vs 1949). In short: choose the International Harvester 986 for outright pulling power, or the International Harvester TD-18A Series 182 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

106 hp

103 hp

Confidence

40%

Guide price

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Overview

Manufacturer

International HarvesterReference

18.4-34 rear tires.Reference

1550 RPM diesel 6-speed crawlerSeptember 3 - 14, 1957Link: Nebraska Tractor Test 629 fileReference

Total built

20,554Reference

22,016Reference

Original price

$31,100 (1981)Reference

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Final drives

bull gearReference

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Steering

power assistReference

hydraulic steering clutchesReference

Drive

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crawlerReference

Variants

986 Hi-Clear

high clearanceReference

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Engine

Drawbar (claimed)

68.6 kWReference

81.3 kWReference

Drawbar (tested)

67.2 kWReference

79.5 kWReference

Displacement

7.1 LReference

11.3 LReference

Bore/Stroke

109 x 127 mmReference

121 x 165 mmReference

Air cleaner

dual dry elementReference

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Rated RPM

2400Reference

1550 (late)Reference

Coolant capacity

24.6 LReference

98.4 LReference

Oil capacity

85.2 LReference

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Power at rated engine speed

78.8 kWReference

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Max power

67.2 kWReference

79.5 kWReference

Fuel tank

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227.1 LReference

Aux. fuel

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5.0 LReference

Belt (claimed)

—

87.2 kWReference

Belt (tested)

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90.7 kWReference

Compression

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15.04:1Reference

Starter

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gasoline-startReference

Starter volts

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12Reference

Belt power (max)

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90.7 kWReference

Transmission

Torque AmplifierReference

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Gears

16 forward and 8 reverseReference

6 forward and 2 reverseReference

Oil type

IH Hy-Tran/B-6Reference

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PTO & Hydraulics

PTO (claimed)

78.3 kWReference

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PTO (tested)

78.8 kWReference

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Hydraulic system

85.2 LReference

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Type

two-speed power shiftReference

gearReference

Capacity

85.2 LReference

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Valves

2Reference

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Rear Type

IIReference

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Rear lift (at 24"/610mm)

2612 kgReference

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Rear PTO

independentReference

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Rear PTO Type

540/1000 (1.375)Reference

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Engine RPM

1000@2100Reference

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Power at rated PTO speed

78.8 kWReference

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Capacities

Fuel

83.3 LReference

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Diameter

—

29 cmReference

RPM

—

906Reference

Speed

—

849.78 meters/minReference

Dimensions

Wheelbase

269 cmReference

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Weight

10500 to 13030 poundsReference

9752 kgReference

Front tire

10.00-16Reference

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Rear tire

18.4-38Reference

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Ag front

10.00-16Reference

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Ag rear

18.4-38Reference

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Length

429 cmReference

421 cmReference

Width

259 cmReference

241 cmReference

Height (cab)

317 cmReference

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Ground clearance

66 cmReference

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Bar rear axle

82 mmReference

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Shipping

5601 kgReference

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Operating

5910 kgReference

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Height

—

269 cmReference

986 Serial Number Location

986 Serial Numbers

1976

8601Reference

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1977

11145Reference

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1978

15624Reference

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1979

19288Reference

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1980

22696Reference

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1981

25220Reference

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Electrical

Ground

negativeReference

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Charging system

alternatorReference

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Charging amps

61 (with cab)Reference

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Batteries

2Reference

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Battery CCA

470Reference

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Battery volts

12Reference

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Test results

Fuel use

26.9 l/hourReference

—

Max pull

5523 kgReference

12134 kgReference

Belt fuel use (max)

—

34.1 l/hourReference

Speeds

TD-18A Serial Numbers

1949

—

22536 (TDR)Reference

1950

—

22837 (TDR)Reference

1951

—

24668 (TDR)Reference

1952

—

27245 (TDR)Reference

1953

—

29201 (TDR)Reference

1954

—

32089 (TDR)Reference

1955

—

33650 (TD181)Reference

1956

—

36101 (TD182)Reference

1957

—

37882 (TD182)Reference

1958

—

38805 (TD182)Reference

Location:

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upper-left dashReference

Final

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38861 (TD182)Reference

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.