6.7 work truck
Post Fiend
Joined: Jan 2009
Posts: 6,521
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From: Greenwood, SC
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The early production engines had a run of defective exhaust valves, which can break while the engine is running. When they break the pieces cause the piston and cylinder wall to self destruct, it's either a blown engine or a hydro locked engine. Happened to me at 122,000, a few others here as well. Seems that the issue is limited to engines built from 07/2010-03/2011.
The early production engines had a run of defective exhaust valves, which can break while the engine is running. When they break the pieces cause the piston and cylinder wall to self destruct, it's either a blown engine or a hydro locked engine. Happened to me at 122,000, a few others here as well. Seems that the issue is limited to engines built from 07/2010-03/2011.
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Junior User
Joined: Mar 2010
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Are the 450s included in early production run. I'm looking at a truck that I guess was inventoried 3/11. 159k. And selling for 20k
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Junior User
Joined: Mar 2010
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Got to drive this truck finally. Having never experienced a 6.7. It's too quiet for a diesel. 
this truck has 3/11 build and seemed to have decent power. My 7.3 I think is more powerful. Is this right?
this truck has 3/11 build and seemed to have decent power. My 7.3 I think is more powerful. Is this right?
Elder User
Joined: Mar 2004
Posts: 853
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From: Oregon
It is my guess that unless you have thousands of dollars in upgrades to your 7.3 there is no way your 7.3 has more power than a stock 6.7! A programmed 7.3 will make about what a stock 6.0 does and a programmed 6.0 will make about what a 6.7 does! 800 ft lbs of torque is almost double what the 7.3 had in most years and the new transmissions put that power to the ground so much more efficiently than the transmissions of old! Good luck with your search for a new truck!
Junior User
Joined: Jan 2015
Posts: 51
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From: Lancaster PA
I will also say go for it, I have a 7.3 with 200/30 injectors, 38r and all the supporting mods of course. Our 6.7 wins hands down when towing! 
But then of course this is the pickup model, Cab and chassis have been detuned a bit
But then of course this is the pickup model, Cab and chassis have been detuned a bit