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Personally I prefer the 361/407s, I am not aware of any crank problems with the 407. I do know though, that they last so long, often the harmonic balancer goes out and breaks the crank. You can look all day at 12s and 806s, and 14s, though they are harder to come across that have never been touch and houred to the hilt when it comes to the engine. I do believe you can get more power out of the 466s, as evidenced by the type of engines most guys pull. That said, when I open up the des moines register there are a lot of 66 series tractors that have been overhauled with around 5-7000 hours on them, more so, it seems, than the 06 56 series counterparts. I guess I judge an engine by the hours you can put on it, and the money you got to put in to it to do it. Other guys focus more on power, and based on the size of their operation, that probably is where their focus should be at. Personally, I think our 806 and 1256 get much better fuel economy when doing light work like haying than our 1066. Pulling seems to be about the same.
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