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Tractor Profile

The Farmall Cub
Farmall Cub Tractor Parts



A Brief History

The Farmall Cub is the smallest tractor in the International Harvester line, capable of pulling one 12-inch bottom plow. Production began in 1947 and continued relatively unchanged until 1964. Variations of the tractor (International Cub Lo-Boys) were continued for some time after that. The Cub was the only Farmall built with an L-head engine.

Farmall Cubs built in different years can be found with McCormick-Deering, Farmall, and International Harvester decals, depending upon the configuration of the parent company International Harvester in the year of production. For the purpose of this article, we will refer to the tractor as simply a "Farmall Cub".

This little tractor was aimed at the needs of the small-acreage farmer - farms of 40 crop acres or less and truck gardens, or for larger farms that needed an extra tractor. Seven or eight implements were initially designed for it: Plow, Disc, Backblade, Sickle-Bar Mower, Belly-Mower, and a one-armed front-end loader for starters. Like the Farmall Model A, the Cub was off-set to the left with the driver and steering wheel on the right. This concept was called "CultiVision" in reference to the ability of the driver to have a perfect view of a belly-mounted cultivator. In 1947, the Farmall Cub sold for around $545.00 - attachments and implements were extra.

The Farmall Cub was easily one of the most popular small chore tractors made in history. This is shown by the sheer numbers of Cubs that were built. People would not stop buying them! With a production run lasting almost 20 years, over 200,000 of them were built between 1947 and 1964.


The Farmall Cub Today

Today the Farmall Cub is still extremely popular - for many of the same reasons it was popular 50 years ago. One of the advantages of this popularity is: if you own one, you enjoy a ready supply of new after-market (replacement) parts.

One of the most popular uses of this tractor today is for mowing large lawns or golf courses with a belly mower attached. New after-factory belly mowers are available from Woods brand equipment dealers. There are also 3-point hitch kits available for these tractors which makes it possible to use many of todays popular 3-point implements. You do need to consider the horsepower of the tractor before using a modern implement and make sure that it is rated for the small size of the Cub.

Many of these tractors are also still in use by gardeners with a large vegetable patch. The Cultivision setup simply can't be beat for cultivating rows of tender young vegetables.

You'll find quite a few Farmall Cubs restored and parade-ready. You can always find at least one at an Antique Tractor Show with it's proud owner standing by. They are not rare machines by any means. But due to their continued popularity they can command a pretty high purchase price. Be prepared to pay anywhere from $1000.00 to $3500.00 for a running tractor, depending upon condition and available implements.


The Specs

Air Cleaner: Donaldson, oil bath.
Battery: Auto-Lite (Special)
Brakes: Two; operated by foot pedal individually or locked together.
Carburetor: IHC, 3/4 inch
Clutch: Rockford or Atwood, single plate, dry disc, spring loaded.
Generator: Delco-Remy (Special)
Governor: IHC, centrifugal, variable speed.
Ignition: IHC, high tension magneto with automatic impulse coupling.
Oil Filter: Purolator, replaceable element.
Radiator: Modine core, fin and flat tube.
Radiator Cover: None
Spark Plugs: Champion 15-A, AC-85S com., Auto-Lite BT8 or Edison Z147, 18 mm.
Starter: Delco-Remy (Special)
Engine: IHC, 2-5/8 x 2-3/4, 1,600 rpm, 4-cylinders, vertical, L-head, cast en bloc; no removable sleeves, piston displacement 59.5 cu. in.
Pulley: 9x4-1/2, 1,322 rpm and 3,114 fpm at normal engine speed (special)
Speed: MPH forward 2, 3, 6-1/8 and 2-1/4 reverse, on 7-24 tires.


Nebraska Tractor Test Results

TEST NO. 386

International Harvester Co., Chicago, Illinois

DATE TESTED: September 29 to October 9, 1947


No repairs or adjustments were noted for the Farmall Cub during 68 hours of engine operating time required for this test. Equipped with three forward speeds of 2.14, 3.12, and 6.4 mph, the Cub used second gear for Test H. Under a rated load of 6.75 drawbar horsepower, it pulled an 837 pound load of 3.02 mph with a slippage of 5.69%, yielding a fuel economy of 8.6 horsepower hours per gallon gasoline. A maximum low-gear pull of 1,596 pounds was recorded in Test G - this test also indicates a speed of 1.96 mph and slippage of 10.98%. At an operating maximum load of 9.23 belt horsepower, the Cub delivered a 10.94 horsepower hours per gallon of gasoline, compared to a virtually identical figure of 10.27 at the Test D rated load of 8.32 belt horsepower. This tractor was equipped with 6-24 rear and 4.00-12 front tires - without additional ballast, it weighed in at 1,477 pounds. Standard equipment included a McCormick-Deering four-cylinder, L-head engine rated at 1600 rpm and carrying a 2-5/8 x 2-3/4 inch bore and stroke. Also featured on this model was an IHC J-4 magneto and an IHC carburetor.


Serial Numbers

The serial number name plate is located on the right side of the steering gear housing.

Serial Numbers (From 1947 to 1964)
Year Starting Serial Number
1947 501
1948 11348
1949 57831
1950 99536
1951 121454
1952 144455
1953 162284
1954 179412
1955 186441
1956 193658
1957 198231
1958 204389
1959 211441
1960 214974
1961 217382
1962 220038
1963 221383
1964 223453

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