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Farmall & IHC Tractors Discussion Forum
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Farmall transmission strength

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John S-B

03-17-2006 14:35:29




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Just got to wondering about how much hp a farmall m tranny could take? My dodge is getting older and was wondering what it would look like with that cummins in it. 'Course this project isn't close to going anywhere farther than the grey matter at this point.




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John S-B

03-17-2006 18:57:32




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 Re: Farmall transmission strength in reply to John S-B, 03-17-2006 14:35:29  
Thanks for the replies guys. Steven thanks for those pics. I think a 4 cyl. turbo diesel would be cool, with a chrome stack and duals a guy could pick up the chicks. ;>) Just dreaming for now, but of course if this ever came to fruition I'd keep ya'll informed. I can almost smell the soil being turned over with a 4 or 5 bottom plow!



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Steven@AZ

03-17-2006 19:23:53




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 Re: Farmall transmission strength in reply to John S-B , 03-17-2006 18:57:32  
If you're interested I have pics of a Farmall A with a 305 Chevy V-8, an F-12 with a Harley, an F-20 with a flathead V-8, an H with a flathead V-8, an H with a V-6, a 1086 with narrow front, and three 830 JDs tied together.

Click here for these!

On a side note, if any of those pictures belong to you and you don't want them shared, please email and let me know so I can take them down.

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K.B.-826

03-17-2006 17:06:24




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 Re: Farmall transmission strength in reply to John S-B, 03-17-2006 14:35:29  
That basic transmission was used in the M, Super M, SMTA, 400, 450, and 560. When the 560 came out, that"s when the rear end troubles started. Differential and final drives couldn"t take 65 hp. After the 560"s were updated, they"d last forever. When the 656 was introduced in 1965, the basic design of the transmission was the same as the old M, however, it used mostly tapered roller bearings instead of ball and straight roller bearings. Now, I"m sure you"re not going to be doing tillage work with your Cummins-powered M 10 hours a day. You"ll be fine doing light work or tractor pulling once in a while.

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Mel in OR

03-17-2006 17:20:41




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 Re: Farmall transmission strength in reply to K.B.-826, 03-17-2006 17:06:24  
Thanks K.B.; that explains it a bit. Dad had two sets of weights, fluid in the tires and the rims widened 2" to flatten the tires. That was putting the power to the ground with minimal slip. I can still hear the old M talk. Nice memory.



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wolfman

03-17-2006 16:48:06




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 Re: Farmall transmission strength in reply to John S-B, 03-17-2006 14:35:29  
Don't know, but neighbor has enough power in his M to spin out in a pulling contest in 4th gear with 18.4-38's. As much as he spent on the motor upgrade, maybe he beefed up the tranny-I don't know. At any rate, that M must be turning out over 200 hp as it can outdistance some turned up 404 cu in 6-cylinder tractors. They call it the Hot-Stock class.



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Mel in OR

03-17-2006 16:41:36




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 Re: Farmall transmission strength in reply to John S-B, 03-17-2006 14:35:29  
Could have been something different with our situation but on the farm in Kansas our main tractor was a Farmall M which Dad put all the power stuff in available in the early 60's for around 55hp as I recall. In our ground it would pull 3-16's in third, as I recall. It was a long time ago. However, on the third day third gear would go out on it. Did that twice before we decided to be satisfied pulling in 2nd. Dad did engine and transmission work all his years and was real good but maybe he missed something about it. Seems there would be limits to what it could take though.

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Steven@AZ

03-17-2006 15:40:34




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 Re: Farmall transmission strength in reply to John S-B, 03-17-2006 14:35:29  
Let's try this with just a tad smaller pictures...

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the tractor vet

03-17-2006 16:03:20




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 Re: Farmall transmission strength in reply to Steven@AZ, 03-17-2006 15:40:34  
Well i have seen a W9 with and allison or twin 462 lincons 4-71, 250 hp 855 cummins and there was a buddy of mine back in 69 that had a tank engine in a H now if the tires would have hooked up it would have been like a bomb going off but like all thing get them spinnen there realy is not that much strain on the drive line .



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Steven@AZ

03-17-2006 15:32:41




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 Re: Farmall transmission strength in reply to John S-B, 03-17-2006 14:35:29  
Here is a Farmall M with a 3116 Cat that was in the photo ads a while back. I guess a 5.9 Cummins would be OK. It all depends on the tires and weight and what exactly you are doing with it. I think the 4bt would be perfect (5.9 with 2 cylinders cut off).

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the tractor vet

03-17-2006 14:48:16




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 Re: Farmall transmission strength in reply to John S-B, 03-17-2006 14:35:29  
I would think that from out of a pickup depending on the year of the cummins that it would have to be cut back , it is not the Hp. but the toqure . Now i know that they will handel a V8 but there is world of differance there . Myself i would like to repower a 706 witha 6BT or even a 6BTA but i am like you just thinking about it .



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