International Harvester 300 Tests

International Harvester 300 tractor photo
1955 - 1956
Utility tractor
Series map:
*Estimated engine power for comparison only.
Tractor Tests
NTTL 539: gasoline 2WD Torque Amplifier
NTTL 574: LP gas Torque Amplifier 2WD
Nebraska Tractor Test 539
300 fuel use from test 539
Nebraska Tractor Test 539
Gasoline 2WD Torque Amplifier
May 5 - 10, 1955
Link: Nebraska Tractor Test 539 file
Belt power (max)41.26 hp
30.8 kW
Belt fuel use (max)4.0 gal/hour
15.1 l/hour
Drawbar performance
Max power37.36 hp
27.9 kW
Gear 3 used for power test.
Max pull4,379 lbs
1986 kg
Gear 1 used for pull test.
Nebraska Tractor Test 574
300 fuel use from test 574
Nebraska Tractor Test 574
LP gas Torque Amplifier 2WD
May 16 - June 1, 1956
Link: Nebraska Tractor Test 574 file
Belt power (max)42.68 hp
31.8 kW
Belt fuel use (max)4.7 gal/hour
17.8 l/hour
Drawbar performance
Max power38.32 hp
28.6 kW
Gear 1 used for power test.
Page information
Peter Easterlund - owner of
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Peter Easterlund - owner/author
Updated on September 17, 2023
©2000-2023 -®. Notice: Every attempt is made to ensure the data listed is accurate. However, differences between sources, incomplete listings, errors, and data entry mistakes do occur. Consult official literature from the manufacturer before attempting any service or repair.