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Subscribe to this threadGM releases details on upcoming 4.5L Duramax turbo-diesel V8
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why not the LS2LS7? @ May 5th 2008 4:56PM
Yeah, go to Caterpillar's site. Their engines have well past 10L displacement and make outputs like 500HP. What does Cat have to say about it? They list "conservatively rated engine" as one of their pluses.
In these heavy duty applications, it's nicer to know your engine can output what it says at a very high duty cycle (i.e. 24/7) without breaking that it is to get more HP.