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Old 05-11-2011, 02:28 PM
mow king mow king is offline
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Join Date: Mar 2005
Location: Cleveland/Columbus, Ohio
Posts: 571
Having gone 6.0 to 6.4 back to a 6.0. I vote the 6.0, they have their flukes but if you do an EGR delete when the egr goes bad and do head studs when/if your headgasket blows they're pretty bulletproof. I love my 6.0 (knock on wood).
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Old 05-11-2011, 08:07 PM
ACC_INC. ACC_INC. is offline
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Join Date: May 2011
Location: Riverview Florida
Posts: 22
Originally Posted by OhioMowerGuy View Post
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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Old 06-23-2011, 09:51 PM
Hard at Werk Hard at Werk is offline
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Join Date: Dec 2008
Location: MA
Posts: 19
Buy the 6 liter and don't look back. I am running a 6.0 that I will actually be trading in for a new one. I am the only owner and was bought new from dealer. It's an '04. Every mile on it is an overloaded mile. It ran, and runs to this day without major issues. My advice, buy it, run it hard and get rid of it before you hit 70k. Then your antifreeze starts seeping into the block and you're screwed. My .02
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