Compare/International Harvester 644 vs International Harvester BTD-8

International Harvester 644 vs International Harvester BTD-8

Verdict: International Harvester 644 vs International Harvester BTD-8

The International Harvester 644 and the International Harvester BTD-8 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 60 hp. International Harvester BTD-8 is the lighter machine (4,808 kg vs 6,350 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester BTD-8 holds more fuel (123.0 L vs 74.2 L) for longer stints between fills. International Harvester 644 is the newer design (1974 vs 1960). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

International Harvester

Fit score

Best match

Clear

International Harvester

Fit score

Best match

Clear

Rated power

60 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

International HarvesterReference

liquid-cooledReference

Optional high-speed reverse transmission.Reference

Total built

—

3292Reference

Drive

—

crawlerReference

Final drives

—

bull gearReference

Engine

Fuel tank

74.2 LReference

123.0 LReference

Engine

44.7 kWReference

—

Displacement

3.4 LReference

4.6 LReference

Bore/Stroke

98 x 111 mmReference

105 x 133 mmReference

Power

44.7 kWReference

—

Rated RPM

2150Reference

1600Reference

Starter volts

12Reference

Engine (net)

—

44.7 kWReference

Drawbar (claimed)

—

38.9 kWReference

Belt (claimed)

—

42.1 kWReference

Power (net)

—

44.7 kWReference

Torque

—

298.3 NmReference

Torque RPM

—

1100Reference

Starter

—

electricReference

Oil capacity

—

18.2 LReference

Coolant capacity

—

24.4 LReference

Transmission

Gears

8 forward and 4 reverseReference

4 forward and 2 reverseReference

Type

—

gearReference

Clutch

—

330mm dry dsicReference

PTO & Hydraulics

Pump flow

29.9 lpmReference

—

Rear Type

IIReference

—

Rear lift

2900 kgReference

—

Rear PTO Type

540/1000Reference

—

Engine RPM

1000@2000Reference

—

Dimensions

Wheelbase

223 cmReference

—

Weight

6350 to 7078 poundsReference

4808 kgReference

Front tire

7.50-16Reference

—

Rear tire

16.9-30Reference

—

Ag front

9.5-24 (MFWD)Reference

—

Ag rear

16.9-30Reference

—

Length

377 cmReference

274 cmReference

Height

248 cmReference

175 cmReference

2WD Weight

2880 kgReference

—

4WD Weight

3210 kgReference

—

Operating weight

—

4808 kgReference

Gauge

—

127 cmReference

Electrical

Ground

negativeReference

—

Battery volts

12Reference

—

BTD-8 Serial Numbers

1960

—

501Reference

1961

—

604Reference

1962

—

1083Reference

1963

—

1701Reference

1964

—

2321Reference

1965

—

2863Reference

1966

—

3637Reference

Final

—

3793Reference

International Harvester BTD-8 Tracks

Width

—

162 cmReference

Length on ground

—

161 cmReference

Area on ground

—

1.3 m²Reference

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.