806-826-856

On Tractor data.com The 806 HP is given on the engine Hp. the 856 and 826 is given on the pto HP.
 
First of all 826 is really a total different animal than the 806 856 806 has 361 engine 856 has 407 and I think the 826 has a 358 German diesel should be able to spit it right out but having a brain fart! 826 at like 80 some hp where the 806 is 93 and a 856 is 100 hp!
 
The 826 was IH's answer to the JD 4020(it fell short....).It did have the D358 German. It was rated at 91 HP.However,the 826 HYDRO only has 80 horse.And about 60 to the rear wheels.
 
We had an 856 and a 966. The 966 has the 414 in it but the 856 could always out pull it. I'm not sure why it seemed so much more powerful, but it sure did. Our 856 was a wheatland with no three point or pto. Maybe they put smaller pumps in them that drew less power, I don't know. That 856 was our "big" tractor for about twenty years. Good machine.
 
There is some confusion surrounding the 826. IIRC it wasn't necessarily IH's answer to anything. It is a model to fill in the perceived horsepower "gap" between the 756 (76HP) and 856 (95HP).

It was called an 826 because they sure couldn't call it a 7-1/2-56...

IH's "Custom" 756 and 856 were its answer to the JD 4000, which was a 4020 engine mated to a 3020 rear end, meant to be a high-horsepower, low-cost tractor.
 
One of the rural myths that even some green guys believe is that a JD 4000 is a 4020 engine in front of a 3020 rear-
end. Not true. The axles are 3 1/8" on a 4000 versus 3 3/8" on a 4020. In the parts book all else is the same in
transmission and final drive internally. 4000 had no front pto, no 1000 rpm pto shaft but you could go to salvage
yard and get one, the internals are there as I have done it on my 4000. Open battery cases, no shielding over
rockshaft, typically 16.9x34 versus 18.4 x 34 tires and lighter castings and front tires were typically 9.5 instead of 11l-15. Only one step and handle, tack was
different without knob to roll over for the gear you were in. A lot of these things have been added on to 4000's over the years. Believe they were 800-1000 cheaper back in the day.
In 1969 my dad was getting his 400 overhauled at a dealer shop. They were servicing a 756 Custom Diesel for delivery.
The only one I have ever seen. If I remember it did not have wedge-lock wheels and no hydraulic seat and maybe a
cheaper seat. I remember thinking there was less difference between an 856 Custom and an 856 than between a
4000 and a 4020 cosmetically.

FWIW some early 3020's had 3 3/8" axles or so I have been informed. That may be another green legend.
 
Don't beat your self up to much Kub, i bought a 806 brand new, and still have it,It had 95 hp right off the truck on a A @ W dyno.
 
Well I was an all green guy then and have since overcome it. Best 806D will outwork the best 4020D evermade but 4020 is cats meow for some jobs and situations such as running sprayer with hydraulic driven pump. On the other hand an IH hydro is cats meow for things like baling hay. 806 and 856 diesels had one of best engines ever made for long life. I have some green tractors about to roll over 10,000 hours without the head being off but they never put in too many hours on heavy tillage either. The 806 and 856 diesels were rated very conservatively in my opinion. We once ran early 966 and a 1970 4020 side by side and they were awful close to the same in the field.
 
I agree with everything you said, i put a M@W turbo on mine when it had about 3,000 hrs on it, everybody said it's wore out dont do that, well i put on another 9,000 hrs on it, but i did change bearings twice, but they were alway's nice. But i changed antifreeze every year and and changed oil every 50 hours.
 

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