Model List and Power Ratings
Generally tractors were marketed by the number of 16" width plows they could pull in average soil to indicate their power. Here is a list of plow ratings (see footnotes) for all Farmall tractors produced for North America:
- 1-plow: Cub (12" width or less), A, Super A, B, BN, 100, 130
- 2-plow (14"): F-12, F-14, C, Super C, 140, 200, 230, 240, 404
- 2-plow (16"): Regular, F-20, H, Super H, 300, 340,
- 3-plow: F-30, M, MD, super MD, Super M, Super M-TA, 350, 400, 450,
- 4 plow and up: 504, 544, 460, 560, 656, 666, 70 Hydro, 706, 756, 766, 786, 806, 826, 856, 966, 1026, 1066, 100 Hydro, 1206, 1256, 1456, 1466, 1468, 1566, 1568.
Notes:
- 1. Plow ratings are general plowing abilities dependent upon soil conditions.
- 2. Depending on the plow width used and the type of soil, a three-plow tractor could handle a four- or five-bottom plow.
- 3. Engine size was sometimes upgradeable. For example, in the 1950s and 60s it was very popular to upgrade the Super M-TA and 400 model 264 cid engine to 281 cid. An economical cylinder sleeve and piston change was all that was needed. This brought the power level up to that of the 450 model.
There were also some Farmall models unique to the European market: DF-25 (comparable to the H), DGD4 (comparable to the Super H), BMD (British MD) and B-450 (British 450). These models all utilized direct-start diesel engines.
Read more about this topic: Farmall
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