1256 vs 1066 for farmstock pulling

Farming Enthusiast · Jun 11, 2023

Our family farm has both and they seam very close in power although I'd say the 12 would probably out lug the 10. My question is why are 1066s so much more successful as pullers? Is it because the 10 has more potential for power out of the fuel pump and turbo? Or is it because performance parts are more readily available?

This post was edited by Farming Enthusiast on 06/11/2023 at 05:04 pm.

used red MN · Jun 11, 2023

Beyond antique classes of say less than 100hp is there
really such a thing as ..Farm stock.. pulling? I am not
into the pulling scene but I think it will be interesting to
see the answers. From what I see how well you pull in
MOST cases is way more about how much your wallet
has been lightened. Hey, if burning money to make
black smoke is your thing go for it. It certainly can be
entertaining.

Farming Enthusiast · Jun 11, 2023

(quoted from post at 18:07:25 06/11/23) Beyond antique classes of say less than 100hp is there
really such a thing as ..Farm stock.. pulling? I am not
into the pulling scene but I think it will be interesting to
see the answers. From what I see how well you pull in
MOST cases is way more about how much your wallet
has been lightened. Hey, if burning money to make
black smoke is your thing go for it. It certainly can be
entertaining.

I've come to the same conclusion but I stared going to pulls and the curiosity got to me and started pulling my 806 last year. This year I'm gonna give the 1256 a few runs. It's only 4mph so I think that'll level the playing field some.

redforlife · Jun 11, 2023

The 10's seem to be more popular than the
12's with the pullers in my area.

As for the reasoning, I can't really
say/don't know. They seem to be pretty
tight lipped about what they have done to
thier tractor. About all I could get out of
one of the 1066 pullers last fall at a
tractor pull, was he said not very much of
it was stock 1066. He didn't elaborate, and
I was under the impression that he
wouldn't, even if I pressed him. Of course
they all put side curtains on, so you can't
see anything in the engine compartment.

caterpillar guy · Jun 12, 2023

Some of the reasons are the 56 series has become more of a collectors item and is more costly to work on with possibly less options for engine work. The 1066 is cheaper to work on in the way of the 56 has dry sleeves and the 10 has wet sleeves there were a lot more 1066's made than 12and 1456's these would be my reasons for the 1066 to pull with. I think for pulling the wet sleeve engines can be bored further than the dry sleeve engine. Though I have no proof of this statement. The 1066 could get the 436 blockinto it that was from the 1466 and it would be more work to get that into a 1456 and would look modified versus the 436 block would look about the same as the 414 block or at least to me the look a lot alike. This is all just my opinion. Only worth what you paid for it.

EFV · Jun 12, 2023

The 1066 has more potential from the cylinder head/removable intake manifold and
WAY more cubic inches than the 1256. For 56 series high HP applications it's getting
harder to find C4 blocks. DT466 blocks are a dime a dozen full retail.

NY 986 · Jun 12, 2023

I suspected cost was a large factor.

CDN 400 · Jun 12, 2023

The blocks are all the same in the 400 series other than the numbers stamped into them. Do you know how many 414's were built into 466's I would guess a whole lot. Only thing you have to change is the crank and rods. There is no boring of any kind needed.

Farming Enthusiast · Jun 12, 2023

(quoted from post at 08:04:03 06/12/23) The blocks are all the same in the 400 series other than the numbers stamped into them. Do you know how many 414's were built into 466's I would guess a whole lot. Only thing you have to change is the crank and rods. There is no boring of any kind needed.

Yea although I'm no pro at this stuff I kinda knew that the 414 could be swapped to a 466 relatively easily. I was wondering more specifically which tractor has more potential for power in factory form with just the fuel turned up? I guess I was a little naive that so many guys were getting into the engines on the 10s to get more power and I shouldn't be surprised.

BarnyardEngineering · Jun 12, 2023

1066's (66 series in general) because, more of 'em to choose from. Easier to work on the engine.

Even the pullers based on 1256's are just hoods. Underneath they're as much 1066 as any.

Someone pulling "farm stock" with an actual 1256 is just flexing.

John Cliver · Jun 12, 2023

You have got that RIGHT Red.......farm stock pulling may have been possible back in 70'ies or 80'ies...maybe early 90'ies BUT not today !!

1256 vs 1066 for farmstock pulling

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