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Mather, Manitoba | lots of them are only 350hp. I have that engine in my 1990 western star. It is only set at 350hp. The guys in the shop told me the one way to tell which hp it was set at factory was to look at the oil pan. If there is a spacer block between the oil pan and the engine block then it is set at 425hp from factory. IF there is no spacer block in there, then it was sent out of the factory at 350hp. | |
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3406B Cat Truck Engine
