• 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

Illustration of the 1956–1958 International Harvester Farmall 450, a 51 hp farm tractor, operator station not recorded — shown as an open platform, a drawing generated from its specification record
Illustration — not a photograph · operator station not recorded — shown as an open platform

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.

Engine, claimed (gross/net not stated)
51.2 hp

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.

Engine — Farmall 450 engine specifications
Make & modelINTERNATIONAL HARVESTER C-281
Cylinders4, liquid-cooled
Displacement280.6 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.

Hydraulics & PTO — Farmall 450 hydraulics and PTO specifications
Rear PTO539 rpmSource 2
PTO shaft1 1/8"- 6 splines

Source · Traktorenlexikon, “Farmall Farmall 450”

What transmission does a Farmall 450 have?

Transmission specifications for the Farmall 450 are below.

Transmission — Farmall 450 transmission specifications
ClutchPedal-actuated dry single-disc clutchSources disagreePedal operated dry single-plate clutch (Traktorenlexikon, “IHC Farmall 450”)
BrakesPedal-operated disc brakes acting on differential side shafts
SteeringMechanical gear steeringSource 2
Top speed16.8 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.

Weights & dimensions — Farmall 450 weights and dimensions
Unladen weight5,600 lb · 2,540 kg
Wheelbase95.7 in · 2,432 mmSource 2
Length143.0 in · 3,632 mm
Width84.0 in · 2,134 mm
Height80.0 in · 2,032 mmSource 2
Ground clearance23.0 in · 584 mm
Front track8.4–17.0 in · 213–432 mm
Rear track50.0–94.0 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.

Farmall 450 fluid capacities, grades and service intervals
SystemCapacity
Engine oil8.0 qt · 7.6 LSource: Traktorenlexikon, “Farmall Farmall 450” · single source, not independently verified
Cooling system28.0 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.

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 checked

14 SEP 2026

Spotted an error?

Sources

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

  1. Traktorenlexikon: Farmall Farmall 450 — CC BY-SA 4.0, WIKIBOOKS-TL-118377 · revision 1054984. Wikibooks contributors (Traktorenlexikon). Original document
  2. Traktorenlexikon: IHC Farmall 450 — CC BY-SA 4.0, WIKIBOOKS-TL-118376 · revision 1055544. Wikibooks contributors (Traktorenlexikon). Original document