Originally Posted by OhioMowerGuy
Im looking at some low mileage dumps. One is a 08 350 6.4 diesel and the other is a 05 550 6.0, both 4x4 automatics. The 6.0 is about 6k cheaper and has only 19k miles. Which truck would you guys go with? I had a 07 3500 gmc and was hauling gravel and dirt just as much as I was hauling mulch. Which motor would be more reliable?
The 350 will get better mileage than the 550. I went from a 05' 350 to a 06' 450. The rear gears went from 4.10 to 4.88. The 450 is a BEAST compared to the 350. Both are Crewcab 8' bed dually, auto, 4x4s. Lost 4mpg with the switch, but there is no comparisson between the trucks. I tow a lot and heavy. The 350 had 119k miles on it when traded in, not a single problem with the 6.0 diesel. Truck towed a 15k trailer for 3 years. Probably 70k of the 119 when traded.
The 450 now has 108k on it and I have towed over 40k miles with it. Bought the truck with 50k on it.
My opinion is the 6.0 is a reliable motor in stock form. No tuners or power adders and it will last a good while. There are more 6.0 trucks running around than gmc duramax 6.6 and cummins 5.9 moter combined. By a lot. So yes there will be more complaints because of sheer volume. Is the motor perfect, absolutly not, but they are a reliable option as far as a class 4-5 truck is concerned.
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