- Vehicle type: unspecified
- WhichTractor size: Standard-size
- No lab test on file
- 1956–1958
- 25,589 built
It sits on the standard-size/high-power boundary, so either size is a fair description. It was ranked on an engine power figure whose source does not say gross or net. WhichTractor size, not the maker’s category
We looked and the record does not say what this machine is. How we decide what a machine is
International Harvester Farmall 450 specs: hp, weight, years
INTERNATIONAL HARVESTER C-281 four-cylinder. The manufacturer claimed 51.2 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.
Engine power, claimed · gross or net not stated
51.2 hp
38.2 kW as stated by the source
No lab test on file
Claimed · standard not stated by the source
Source · Traktorenlexikon, “IHC Farmall 450”, claimed
This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.
- Weight
- 5,600 lb
- Top speed
- 16.8 mph
International Harvester Farmall 450 specs: key facts
The International Harvester Farmall 450 was built from 1956 to 1958.Source 1
The International Harvester Farmall 450 has a claimed engine power (gross or net not stated) of 38.2 kW (51.2 hp); it has no measured PTO figure.
The International Harvester Farmall 450 is two-wheel drive (2WD).Source 1
The International Harvester Farmall 450 has a INTERNATIONAL HARVESTER C-281 engine, a 4-cylinder 4.60 L unit.
The International Harvester Farmall 450 weighs 2,540 kg (5,600 lb) unladen.Source 1
The International Harvester Farmall 450 has a rear PTO running at 539 rpm.
Source · Traktorenlexikon, “IHC Farmall 450”
How does the Farmall 450 compare with its class?
- Limitation:
Five forward gears is low for its class — 38% below the median of 8 across the 312 machines within 10% of its power that hold this figure.
Derived by WhichTractor from 317 comparable records. How we work this out

How much horsepower does a Farmall 450 have?
The only figure for the Farmall 450 is 51.2 hp (38.2 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.
Source · Traktorenlexikon, “IHC Farmall 450”
What engine is in a Farmall 450?
A Farmall 450 has an INTERNATIONAL HARVESTER C-281, a 4-cylinder 4.60 L engine.
| Make & model | INTERNATIONAL HARVESTER C-281 |
|---|---|
| Cylinders | 4, liquid-cooled |
| Displacement | 280.6 ci · 4.60 L |
Source · Traktorenlexikon, “IHC Farmall 450”
How much will a Farmall 450 lift?
Hydraulic and PTO specifications for the Farmall 450 are below.
| Rear PTO | 539 rpmSource 2 |
|---|---|
| PTO shaft | 1 1/8"- 6 splines |
Source · Traktorenlexikon, “Farmall Farmall 450”
What transmission does a Farmall 450 have?
Transmission specifications for the Farmall 450 are below.
| Clutch | Pedal-actuated dry single-disc clutchSources disagreePedal operated dry single-plate clutch (Traktorenlexikon, “IHC Farmall 450”) |
|---|---|
| Brakes | Pedal-operated disc brakes acting on differential side shafts |
| Steering | Mechanical gear steeringSource 2 |
| Top speed | 16.8 mph · 27 km/hSource 2 |
Source · Traktorenlexikon, “Farmall Farmall 450”
How much does a Farmall 450 weigh?
A Farmall 450 weighs 5,600 lb (2,540 kg) unladen.
| Unladen weight | 5,600 lb · 2,540 kg |
|---|---|
| Wheelbase | 95.7 in · 2,432 mmSource 2 |
| Length | 143.0 in · 3,632 mm |
| Width | 84.0 in · 2,134 mm |
| Height | 80.0 in · 2,032 mmSource 2 |
| Ground clearance | 23.0 in · 584 mm |
| Front track | 8.4–17.0 in · 213–432 mm |
| Rear track | 50.0–94.0 in · 1,270–2,388 mm |
Source · Traktorenlexikon, “Farmall Farmall 450”
What oil does a Farmall 450 take, and how much?
A Farmall 450 engine takes 8.0 qt (7.6 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.
| System | Capacity |
|---|---|
| Engine oil | 8.0 qt · 7.6 LSource: Traktorenlexikon, “Farmall Farmall 450” · single source, not independently verified |
| Cooling system | 28.0 qt · 26.5 LSource: Traktorenlexikon, “IHC Farmall 450” · single source, not independently verified |
Always confirm against the operator’s manual for your machine before service.
Which tractors compare with a Farmall 450?
Within 10% of its 51.2 hp of claimed engine power, the same type, and first built within 15 years of it.
- International Harvester W-45051.2 hp engine, claimed · 1956–1958Side by side with the Farmall 450 →
- Fordson County Super IV51.2 hp engine, claimed · 1960–1964Side by side with the Farmall 450 →
- Ford 4000 (A) 6X/6Y51.2 hp engine, claimed · 1964–1975Side by side with the Farmall 450 →
- SOMECA 615 (DT)51.2 hp engine, claimed · 1965–1968Side by side with the Farmall 450 →
- Fiat 550 (DT)51.2 hp engine, claimed · 1968–1978Side by side with the Farmall 450 →
- International Harvester 54451.2 hp engine, claimed · 1968–1973Side by side with the Farmall 450 →
Common questions about the International Harvester Farmall 450
Is a Farmall 450 two-wheel drive or four-wheel drive?
The International Harvester Farmall 450 is two-wheel drive (2WD).
What PTO does a Farmall 450 have?
A Farmall 450 has a 539 rpm rear PTO on a 1 1/8"- 6 splines shaft.
What serial numbers does a Farmall 450 carry?
The source lists them year by year, from 22305 in 1958 to 26067 in 1958. It does not say whether that is the tractor’s or the engine’s number, and we never work out a year from a serial number.
Sources and how this page was built
Compiled from Traktorenlexikon, “IHC Farmall 450”; and Traktorenlexikon, “Farmall Farmall 450”.
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
- Traktorenlexikon: Farmall Farmall 450 — CC BY-SA 4.0, WIKIBOOKS-TL-118377 · revision 1054984. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: IHC Farmall 450 — CC BY-SA 4.0, WIKIBOOKS-TL-118376 · revision 1055544. Wikibooks contributors (Traktorenlexikon). Original document