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Farmall 100 vs Farmall A

Verdict: Farmall 100 vs Farmall A

The Farmall 100 and the Farmall A are both tractors — here is how they stack up on the figures that matter. Farmall 100 leads on rated power with 18 hp against 17 hp. Farmall A is the lighter machine (1,088 kg vs 2,600 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Farmall 100 holds more fuel (41.6 L vs 37.9 L) for longer stints between fills. Farmall 100 is the newer design (1954 vs 1939). In short: choose the Farmall 100 for outright pulling power, or the Farmall A if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Fit & specs
Farmall 100 Tractor
Farmall
62
Fit score
Best match
Clear
Farmall A Tractor
Farmall
62
Fit score
Best match
Clear
Rated power
18 hp
17 hp
Confidence
40%
40%
Guide price
Overview
Manufacturer
Farmall (a part of International Harvester)Reference
International HarvesterReference
Gear 1 used for pull test.Reference
Distillate 4-speed 2WDOctober 9 - 16, 1939Link: Nebraska Tractor Test 330 fileReference
Total built
16,191Reference
117,552Reference
Factories
Louisville, Kentucky, USAReference
Variants
IH 100
utility tractorReference
Farmall 100
row-crop tractorReference
100HC
High ClearanceReference
AV
Vegetable cropReference
AI
International industrialReference
Engine
Fuel tank
41.6 LReference
37.9 LReference
Plows
1Reference
1Reference
Drawbar (tested)
13.3 kWReference
12.2 kWReference
Belt (tested)
15.0 kWReference
13.7 kWReference
Displacement
2.0 LReference
1.9 LReference
Bore/Stroke
79 x 102 mmReference
76 x 102 mmReference
Air cleaner
oil bathReference
Compression
6.5:1Reference
6.0:1Reference
Rated RPM
1400Reference
1400Reference
Idle RPM
900-1400Reference
900-1400Reference
Firing order
1-3-4-2Reference
1-3-4-2Reference
Starter volts
6Reference
6Reference
Oil capacity
4.7 LReference
4.7 LReference
Belt power (max)
15.0 kWReference
12.3 kWReference
Max power
13.3 kWReference
11.3 kWReference
Aux. fuel
3.8 LReference
Drawbar (claimed)
12.9 kWReference
Belt (claimed)
14.2 kWReference
Starter
electricReference
Coolant capacity
12.3 LReference
Oil change
120 hReference
Transmission
Gears
4 forward and 1 reverseReference
4 forward and 1 reverseReference
PTO & Hydraulics
Type
gearReference
gearReference
Rear PTO Type
540Reference
540 (1.125)Reference
Engine RPM
541@1400Reference
Rear PTO
transmissionReference
Dimensions
Wheelbase
180 cmReference
Weight
2600 to 3000 poundsReference
1088 kgReference
Front tire
5.00-15Reference
4.00-15Reference
Rear tire
9-24Reference
8-24Reference
Ag front
5.00-15Reference
5-30Reference
Ag rear
9-24Reference
8-24Reference
Length
271 cmReference
270 cmReference
Height (steering wheel)
166 cmReference
160 cmReference
Clearance (rear axle)
54 cmReference
53 cmReference
Front tread
111 to 162 cmReference
111 to 162 cmReference
Rear tread
101 to 172 cmReference
101 to 172 cmReference
Shipping
1179 kgReference
Operating
1360 kgReference
Ballasted
1965 kgReference
Ballasted weight
1564 kgReference
Clearance (front axle)
55 cmReference
Farmall 100 attachments
100 Serial Numbers
1954
501Reference
1955
1720Reference
1956
12895Reference
Final
18940Reference
FAA220829 (Louisville)Reference
Capacities
Diameter
21 cmReference
21 cmReference
Width
142 cmReference
195 cmReference
RPM
1157Reference
1157Reference
Speed
784.56 meters/minReference
784.56 meters/minReference
Test results
Belt fuel use (max)
7.9 l/hourReference
5.3 l/hourReference
Max pull
1135 kgReference
1070 kgReference
A Serial Number Location
A Serial Numbers
1939
FAA501Reference
1940
FAA6744Reference
1941
FAA41500Reference
1942
FAA80739Reference
1944
FAA96390Reference
1945
FAA113218Reference
1946
FAA146700Reference
1947
FAA200001 (Louisville)Reference
Electrical
Ground
positiveReference
Charging system
generatorReference
Battery volts
6Reference

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.

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