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Tractor Talk Discussion Forum

656 vs 4020

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john

10-16-2003 18:22:17




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i have a 656 gas with a freshly rebuilt c301 (806 motor) in it. it is gear drive and has 18.4.38 firestones on it.. my buddy has a 4020 diesel powershift, runs decent but has a lot of hours on it with 18.4.34 tires on it..if both tractors weigh about the same who do u think will pull who backwards? i don't care either way but we've been talking about this for a while and i would like to hear other peoples opinions..thanks

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Harold H

10-20-2003 06:44:15




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 Re: 656 vs 4020 in reply to john, 10-16-2003 18:22:17  
When new, 4020 sold against the 806. Both are larger and heavier than the 656.



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Bob Clark

10-18-2003 05:59:21




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 Re: 656 vs 4020 in reply to john, 10-16-2003 18:22:17  
Well, stock in the field the 4020 would allways be able to handle 1 16" bottom more easily, I know this from personal experiance. With the engine change and considering the 4020 is deisel and the 656 is gas it's probably a close match hp wise. When you start throwing in things like weight and weight distribution, tires, etc your getting into a twilight zone / coffee shop area of debate. The are both great tractors though.

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Puller504

10-17-2003 07:56:52




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 Re: 656 vs 4020 in reply to john, 10-16-2003 18:22:17  
It's not fair to compare apples to oranges! We used to have a 656 gas and we now have a 4040 JD, same engine as a 4020. Each tractor is an excellent machine, doing what they were designed for. The 656, regardless of engine, has a lighter rear end and weighs about a ton less than the 4020. I have witnessed people hooking a chain between 2 tractors with near disasterous results! A tractor's pulling potential is best explored on a pulling track. A 656 would pull in the 7000# stock class, and the 4020 should be in the 9000# class. I finished this season in the WSTPA at West Salem, Ohio in 2nd place with my OLIVER 1600 gas weighed down to 9000#! First place went to a JD4010, rated at 25 more horsepower than I have. Don

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Farmered

10-17-2003 04:37:12




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 Re: 656 vs 4020 in reply to john, 10-16-2003 18:22:17  
I wouldn't be too surprised if either outfit won that contest. Don't forget the skill of the operator in such an even match. I remember many years ago my boss (a MF dealer) challenged me with a new 265 MF tractor. I had my Ford F250, 351 V8 with full time 4WD and no load in the box. We were both surprised. It was quite a sight to see that tractor going backwards with wheels spinning forward. Ed

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Allan

10-17-2003 03:53:01




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 Re: 656 vs 4020 in reply to john, 10-16-2003 18:22:17  
Hi John,

I realize this is just fun "coffee talk" and that you of course, would never tie two tractors together this way, but I think your buddy would probably spoil your day.

Don't get me wrong, the 656 is my favorite tractor ever, but he is diesel with it's better torque and has that powershift and let's face it; the 656 just never was noted for it's weight distribution to the rear end. She's a mite light in that respect; that was one of the 656's biggest drawbacks.

Fill 'er full of fluid and all the weight you can hang on her and you might last a minute or two before he slides you rearward.

Sweet old tractor, tho

Allan

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dhermesc

10-17-2003 05:41:18




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 Re: Re: 656 vs 4020 in reply to Allan, 10-17-2003 03:53:01  
The 4020 would win, if there was a winner. A 856 is closer in size and weight to a 4020. I know its idle talk but it sounds like a good way to "hurt" a tractor.



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rustyfarmall

10-16-2003 19:12:27




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 Re: 656 vs 4020 in reply to john, 10-16-2003 18:22:17  
Years ago when I was farming, I owned an 856 diesel, and my father owned a 4020 diesel, we worked together quite often, and we each had a 13 ft. chisel plow, working in the same field, plowing at the same depth, the two tractors were an even match, if I hit an easy spot, I would pull ahead, but as soon as dad hit that same spot, he would catch up.



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Aaron

10-16-2003 18:29:31




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 Re: 656 vs 4020 in reply to john, 10-16-2003 18:22:17  
I'll guarantee neither one of you'll pull the other backwards. You'll both sit and spin and neither will go forward. You can't measure horsepower in this manor. What you need to do is hook them up to a dyno to find out which is cranking out more power. I know that both tractors are good models, and about the same size.



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