Horse power will depend on turbo and injection pump setup.
The DT4xx share the same basic block and many components. Early blocks were 1 lifters, later truck 466s were 1.125 lifters and the really late ones were roller lifter.
Later + head is considered desirable as they are supposed to flow better.
Crankshaft stroke is different between the 3 sizes, 414, 436 and 466. 4.75, 5 and 5.35 respectively. Bore is the same at 4.3. Connecting rod is the same, piston pin height changes between the models.
I have found that the 466s out of combines and some trucks tend to have beat up rod bearings from the constant high rpm running. The 5 stroke in the 436 will take rpm better.
Ive seen 414s rebuilt as 466s, but they were restamped.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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