Biggest change

[jwal10]

IH change from the F series to the letter series tractors.

My Dad would agree to IHC letter series. He went from F-12 to H. He said it changed farming more than anything, hyd's, easy steering, ergonomics. I always thought the F-20/30 to Farmall M was a bigger improvement. They just seemed so awkward.

I would say the 3020 replaced the 630 and the 4010 replaced the 730, with more HP of course. It took the 5010 to replace the 830.

Me personally. I worked for a guy that ran 2 820's, he replaced them with 2-1206's. Now that was a real improvement....James

 

[m16ty]

Not as much a change but instead an addition of something revolutionary:
IH 2+2

Lots of people don’t like them, but my uncle had one and I really liked it. Was great on the grain cart. Somebody came along and offered him a profit so he sold it. Replaced it with a 8630 JD, I liked the 2+2 much better.

IH was just starting to gain sales with the 2+2 when they went broke. When Case took over they didn’t want it competing with their 4x4 lineup so they axed it.

 

[jon f mn]

In 1970 J.I. Case replaced the 30 series tractors with the 70 series with integral cabs rather than add-on cabs, power shift transmissions and direct injection diesel engines. That set the cab tractor market on it's ear for a few years.

That was in 69

 

[centash]

Massey Harris to Massey Ferguson.....not much the same from the triple number series to the MF 50, 65, 85, Super 90. They were all products of Massey .Harris Ferguson.

Ben