601 / 641

oleblu950 · Feb 22, 2020

What is the difference between a Ford 601 and a 641?

Royse · Feb 22, 2020

601 is the series. 641 is the model number within the series.
In this case, a 601 with a 4 speed transmission and transmission
driven non-live PTO. A 651 for example, would have a 5 speed
transmission and transmission driven, non-live PTO.

Check out John Smith's great resource page for all the info.
Here's a [b:b5f79c0f78]Link[/b:b5f79c0f78]

Sean in PA · Feb 22, 2020

601 was a series of tractor models, and the 641 was a model within the 601 series. The middle digit of the model number was the differentiator of the various models and it specified which transmission, PTO and 3 point lift options it had.

All of these are tractor models within the 601 series:

611 - Select-O-Speed transmission with 3 point lift but no PTO
621 - Four speed transmission with no 3 point lift or PTO
631 - Four speed transmission with 3 point lift but no PTO
641 - Four speed transmission with 3 point lift and non-live PTO
651 - Five speed transmission with 3 point lift and non-live PTO
661 - Five speed transmission with 3 point lift and live PTO
671 - Select-O-Speed transmission with 3 point lift and single speed (540 rpm) independent PTO
681 - Select-O-Speed transmission with 3 point lift and dual speed (540/1000 rpm) independent PTO with ground speed PTO as well

oleblu950 · Feb 22, 2020

Thanks guys. Being an Oliver guy I had no idea.

Royse · Feb 22, 2020

You're welcome. Glad to help.
They're all great old machines, regardless of the brand.

601 / 641

oleblu950

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Sean in PA

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