Numbered IH tractor overview

Am I correct in saying that the 9xx, 10xx,12xx, and 14xx are generally increasing horsepower and that the xx56, xx66, xx86 are newer models, desing changes, feature changes?

I was a little surprised to see that a 1486 is something like 50% more horsepower than Allan's 966 but seems to weigh about the same - 11,000.

I might get an opportunity (?) to help put a clutch in a 1486. Would that be a similar process to all of Allan's pix on the 966 rebuild?

Thanks

The letter series was replaced by the 25-65 horsepower 00 series, The 100 replaced the Super A, 200 replaced Super C, 300 replaced Super H, 400 replaced Super MTA, and the big 600 replaced the Super W-9. They also added a Utility model, the 300U.

In '56, the 30/50 series relpaced the 00 series. The models were the 130, 230, the 330 Utility, which was a new size, the 350 and 350 U, the 450, and the 650.

The 25-80 horsepower 40/60 series came in '58, which were the 140, 240, 340, 460, 560, and 660, all still fairly similar to the A, C, H, M, W-9, execpt that the 460, 560, and 660 now had six-cylinder engines.

The 65- 112 horsepower 06 series came in '63, with the 606 Utility, the 706, 806, and in '65, the 1206. The 7, 8, and 12 were a totally new design. Their little brothers were the 404 and 504, quite similar to the 240 and 340.

In '65, the 50-65 horsepower 656 series came along, with the 656 being built from '65-'72, the 544 from about '67-'72, the 666/Hydro 70 from '73-'76, and the 686/Hydro 86 from '77-80. Most guys classify these with the 56, 66, and 86 series, but they are a design/series all of their own.

In '67, the 75-130 horsepower 56/26 series replaced the 06's- the 756, 856, 1256, and later the 1456, 826, and 1026.

The 80-150 horsepower 66 series came along in '71- the 766, 966, Hydro 100, 1066, 1466, and 1566. There was also the 1468 and 1568, which had V-8 diesels.

The 80- 160 horsepower 86 series came in '76, the 886, 986, Hydro 186, 1086, 1486, 1586, and later, the 786.

The 80-187 horsepower 3088/5088 series came in '82, the 3088, 3288, 3488 Hydro, 3688, 5088, 5288, and 5488. The basic design of the Case-IH Magnums is based off of the 5088 series.

I know I left out a few, like the 2+2's, the 4 wheel drives, and the British Utilities, but I'm sure I've already told you more than you ever wanted to know.

The reason you see a lot of 1950s Farmalls and Utilities in better than average condition is pure economics. The diesel models that followed turned out the same hp on 1/3 of the fuel and rather than rebuilding engines every 4,000 hours the diesel were achiving 10,000 hours between rebuilds. Those figures are with excellent service. For this reason a lot of those old gassers from the 50 soon got traded off, especially on farms with heavy workloads. That is the single biggest reason you see 50s tractors still in reasonably good shape. Most of them got retired prematurely.

Been talking with my nephew about getting a little 1486 seat time this spring.