You will most likely find that finding a Farmall H with a 9 speed much more difficult then finding a M so equipped. I spent several years looking for a H with a Heisler 9 speed and finally found one in Indiana that was an original Iowa family tractor. I already had a Farmall M with the Heisler 9 speed and was looking for a H likewise equipped. There was a thread which listed the speeds of a H and M with the Heisler 9 speed conversion where Jim Becker posted them. You might be able to locate that thread in the archives as it was dated 09-20-2010 and started by Bernie Steffen. The speeds are noted for the Farmall M with 12 X 38 high cleat tires:
With Heisler in OD: 1st 5.76 2nd 7.64 3rd 9.35 4th 11.3 5th 16.75 Rev. 6.96
The H was noted with only slightly faster speeds in 4th for both normal and when in OD. One thing to note with the Heisler and most likely with the M&W 9 speed it that the PTO and belly pump are also running at increased speeds when the tractor is running in the OD mode. The max. normal PTO speed is 565 RPM while 1160 in OD. My Farmall H and M Heisler have a belly pump disconnect that can be activated when the 9 speed is engaged to prevent over speeding the pump. I generally only use those tractors for hay duties and pulling wagons between the field and barns loaded with small square bales and most always are using them with the 9 speed engaged. If you are ever down Missouri way stop by and demo them if desired but I think you will find a Farmall so equipped very useable for duties other then soil tillage where the factory gearing is more appropriate for breaking soil unless disking and harrowing where they would most likely be suitable. I think you will find that 9 speed conversions provides a lot more variation in speeds then possible with a TA which is designed for a totally different purpose, Hal.
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