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The 407's only week point is top end horsepower. I have been told they are higher than the 400 series to get the hp out of for pulls or what not. They run forever, even if they didn't have the best of care. Look up 1066s and see how many had overhauls at around 5000 hours. Not all or anything, but you will find quite a few. Just about the only 407 or 361s that get touched have a ton (10,000-15,000-20,000) of hours, or the owner got bored and overhauled it one winter. The cam is a little hard to find, as is a block or head or crank. Not hard in the sense that you can't find them, just a little hard on the pocket book. An overhaul kit really isn't much more that the 400 series. As far as torque, I don't know. I was told on another board the 407 had a shorter stroke, which should mean a quicker response. This came up on the red power site and many guys favored the 407 unless your going to pull it, and no one had a bad word to say about one. One guy commented he had seen one 407 not make it to 10000 hours, and he had seen a pile of 414s not make it much past 5000.
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