http://forum.62-65-dieselpage.com/ubb/ultimatebb.php?ubb=get_topic&f=3&t=003935
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jjw
ND
Go to second post of this thread.
jjw
ND
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Originally posted by RADdodge
650 hp is interesting. That information will make Cummins owners feel good, but is only going to make the Navistar and Duramax owners defensive. An outright lie is easy to dismiss; it’s the half-truths that get ya. Well, we all know the Cummins is built like a battleship and can take abuse.
Guess we wern't aware that Fords and Chevys were having Rams for lunch these days. Different OEM's define different product performace parameters and general specifications. As a supplier to Dodge, we recognize that they must define what such are to be for their products. One also has to ask oneself, "how long will high-output competitors last, in terms of engine durabilitiy - and, how much trouble with they have, in terms of reliability?" We have nearly twice the bearing area of some of these competitors and if you look at component size, e. g. : connecting rods, you have to ask youself how long they will really live. From our heavy-duty, commercial background we look more at cost-per-mile of operation than speed performance. Our recreational marine engine family usually has higher specific output engines - they have cool water for aftercooling and their durability expectations are less than commercial vehicles, as well as having more relaxed emissions requirements.
Also, the new engines are more powerful due to the investment in higher-buck fuel systems. We cannot say if the cost-per-horsepower is actually more favorable. You pay the price for the higher technology solution.