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Farmall Letter Series

Farmall A ·  Farmall Super A ·  Farmall B ·  Farmall BN ·  Farmall C ·  Farmall Super C ·  Farmall H ·  Farmall Super H ·  Farmall M ·  Farmall Super M ·  Farmall Cub

The F-series tractor lasted until 1938. In 1939, industrial designer Raymond Loewy was hired to re-design the tractor. The new, sleek look, combined with other new features, created what is known as the "letter series" of tractors (A, B, BN, C, H, and M; another smaller tractor, the Cub, was also introduced). The tractors were updated to the "super" series in 1952 (with the exception of the A, which became a "super" in 1947, and the B and BN, which were discontinued in 1948) and received many improvements. Many of these tractors (especially the two largest: the M and H models, respectively) are still in operation on farms today. The letter series of tractors was produced until 1954, and was a defining product in IH history.

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Farmall A

IH produced the Farmall A from 1939 to 1947. It has a 113 cid 4 cylinder engine and weighed approximately 1,900 lbs. The A has an offset engine and had a wide front end. The A has 4 forward gears and 1 reverse gear. There were about 117,552 A's produced from 1939 to 1947.

Farmall Super A

IH produced the Farmall Super A from 1947 to 1954. The Super A has a 113 cid 4 cylinder engine and weighed approximately 2,385 lbs. It has an offset engine and a wide front end. The Super A has 4 forward gears and 1 reverse gear. There were about 94,001 Super A's produced from 1947 to 1954.

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Farmall B

IH made the Farmall B from 1939 to 1947. The B was almost the same as the A. The only exceptions were that the B's engine was in the center and had a narrow front end. It has a 113 cid 4 cylinder engine and weighed approximately 3,500 lbs. The B has 4 forward gears and 1 reverse gear. There were about 75,241 B's produced from 1939 to 1947.

Farmall BN

IH produced the Farmall BN from 1940 to 1947, and there were about 1500 of them produced. The Farmall BN is the same tractor as the Farmall B, except for a few rear wheel changes. It provides a narrower rear wheel tread, varying in 4 inch increments. It would allow the rear wheel to be placed from 56 to 84 inches apart, while the B only allowed the wheels to stretch from 64 to 92 inches. The BN was designed to work row crops, such as beets and potatoes.

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Farmall C

IH produced the Farmall C from 1948 to 1951. The Farmall C pretty much replaced the Farmall B. It had the same 113 cid engine, but added touch control hydraulics. The C has 4 forward gears and 1 reverse gear. There were about 103,816 C's produced from 1948 to 1951.

Farmall Super C

IIH produced the Farmall Super C from 1951 to 1954.It has a 123 cid engine, hydraulic touch control and IH fast hitch availability. The Super C has 4 forward gears and 1 reverse gear. There were about 112,006 Super C's produced from 1951 to 1954.

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Farmall H

IH produced the Farmall H from 1939 to 1953. It was a very popular tractor with over 350,000 tractors produced. Many H's are still in use today on many farms. It has a 152 cid 4 cylinder engine with a 6 volt electrical system. The Farmall H has 5 forward gears and 1 reverse gear. There were about 390,317 H's produced form 1939 to 1953.

Farmall Super H

International Harvester built the Farmall H in 1953 and 1954. There were two distinct models, with the key difference being that later models had "live" engine-driven hydraulics. This resulted in the battery being relocated under the seat, which is an easy way to distinguish them. The Super H had slightly larger displacement than an H, resulting in greater horsepower. Only 28,691 Super Hs were produced, compared to 390,317 Farmall Hs.

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Farmall M

IH produced the Farmall M from 1939 to 1952. It was a very popular tractor, with over 250,000 tractors sold. The Farmall M was the largest row crop tractor at the time that International Harvester made. In 1941 IH introduced the MD. This was a diesel version of the M. It would start on gasoline and then when warmed up switched over to diesel. It has a 248 cid 4 cylinder engine with a 6 volt electrical system. The Farmall M has 5 forward gears and 1 reverse gear. There were 270,140 M's produced from 1939 to 1952 and 18,253 MD's produced.

Farmall Super M

International Harvester (IH) produced the Farmall Super M from 1952 to 1954. There were many variations of Super M's back then. One variation was a "Super MD", which used diesel fuel. Another variation was the "Super MTA" which had a torque amplifier. That basically means that you double the gears.The Super M has a 264 cid engine with a 6 volt electrical system. The Farmall Super M has 5 forward gears and 1 reverse gear. There were about 44,551 Super M's produced, 5,199 Super MD's produced, and about 26,924 Super MTA's produced.

Farmall Cub

IH produced the Farmall Cub from 1947 to 1964. It looks just like the A, but smaller. It has a 60 cid 4 cylinder engine that ran at 1600 rpm and later at 1800 rpm. It weighs about 1,500 pounds. Most Cubs today are used for mowing, but it had a variety of implements made specifically for it. The Cub has 3 forward gears and 1 reverse. There were about 203,814 Cubs made from 1947 to 1964.

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