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Old 10-23-2008, 05:03 PM   #1 (permalink)
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"Red top" Cummins N14

Hi guys,

I'm in the market for a late 1990s Pete 379, and while most of the trucks I've looked at have the Caterpillar 3406E, some have Cummins' N14 rated from 435HP and up. A lot of these seem to be the "red top" version.

I understand the red valve cover is supposed to be an indication of a high-horsepower engine. Are there any issues I should be aware of with these?

Also, I'm not as familiar with Cummins history as I am with Caterpillar. In the 1995-2000 range, were there any mechanical/electronic bridge motors, early/crappy emissions control technology or any other problem engines I should avoid?

Input much appreciated.
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Old 10-26-2008, 06:58 PM   #2 (permalink)
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I HAD A 525 HP N-14 in my 98 pete. only thing done to the engine wasa head gasket recall that was done when the truck had about 430,000 miles on it, the i had to start replacing injectors at about 680,000. I sold the truck with 940,000 miles on it and had never had any major work done. i had the bearings checked at 700,000 or so while they replaced a leaking pan gasket, all checked well, was told the bearings had a lot of life left then. hope this helps ya decide.
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Old 10-27-2008, 08:34 PM   #3 (permalink)
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You'd be very happy with the N14.
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Old 10-28-2008, 10:08 PM   #4 (permalink)
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How is the N14 on fuel mileage (bobtail/empty/loaded)?

Also, does anything like the Bully Dog tuners that you see for smaller diesels (pickup) exist for this engine?
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