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The '03 and '04 trucks had some teething problems with their engines, but the transmissions are nearly bulletproof. They are still using the same transmission in the 2008-2010 trucks. They will hold more horse power stock than any other transmission made. A stock Ford 5R110 will hold up to 550 rear wheel horse power reliably. That's around 700 horse power at the flywheel. That's incredible.
I had an '03 that I used to haul hay trailers. 6.0l Crew Cab 4x4 dually. I hauled a combined weight of about 40K lbs. It did great -- when it was working. I had a high pressure oil pump go out at 80K miles, bad FICM at 90K, numerous re-flashed before and after all this, split and injector and injector cup at 100, got a new turbo at 95K.
The turbo may have been my fault. climbing grades with that weight constantly probably turned the turbo into a smoking ruin. The rest was Ford's problem. All it needed to be reliable was new injectors, but Ford wouldn't cough up the money to do it, instead they did them one at a time when they went bad. I traded it in on a 2008 F350 CC 4x4 King Ranch. A woman at my bank bought it from the dealership after I traded it. It worked for her for about a month, and then went into the dealership for the rest of the injectors (finally). Still runs today, I see it around town all the time.
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11-02-2009, 05:34 AM
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