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6.7L Power Stroke Diesel 2011-2015 Ford Powerstroke 6.7 L turbo diesel engine

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Old 02-14-2011, 06:34 PM
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how much power can the 6.7 make?

i am just curious to know if anyone knows how much power the 6.7 can safely make? i have heard that ford plans to keep this engine in its trucks for the long run, do you think we will see a power increase out of it in a couple of years, or is it pushing its limits with the new flash?
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Old 02-14-2011, 07:05 PM
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It's already making a lot more than I need to tow a 36' fifth wheel!
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Old 02-14-2011, 07:36 PM
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more factory power has been hinted at...
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Old 02-14-2011, 08:59 PM
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From what ive read and heard, the whole powertrain has been over built, like really over built, so they could probably get a quite a few more horses outta it
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Old 02-14-2011, 09:07 PM
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FWIW, I would be VERY surprised to see another flash update to the existing trucks in a similar manner to the 400/800 flash.

I'm pretty confident the 6.7L will see more power in the future, every other diesel engine has over it's livespan. But probably not for those of us already out here.
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Old 02-14-2011, 09:09 PM
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Testing takes time and Ford took 6 months to do the 400/800 upgrade. They will not increase power until they have enough testing to ensure reliability.

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Old 02-14-2011, 09:10 PM
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Are the axles and ring/pinion gearing still the only things that change on the heavier service medium duties than the regular super duties? Or is there a transmission change, or gearing change within the same case, in the bigger trucks?

The more power you generate the more fuel, air, and cooling capacity you need. I'd be curious as to what the limits are of the 6.7 also. Cooling would be pretty major - not sure if all of the extra cooling capacity would fit in the trucks or not. As pbruckne has alluded to in other posts - something has to give. What will be first?

That would be fun to be on the R/D team that pushes the limits on these engines to find where they do fail and how. I wonder how many engines Ford has blown up to find that out...
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Old 02-14-2011, 09:13 PM
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Quote:
Originally Posted by KC8QVO View Post
Are the axles and ring/pinion gearing still the only things that change on the heavier service medium duties than the regular super duties? Or is there a transmission change, or gearing change within the same case, in the bigger trucks?
Hey Steve,

The PSD engines have always been used in trucks up to F-550s, and they have the exact same driveline as the F250-350 pickups with the exception of axles.

Different gearing in the axles, but that's about it. Back when the '08 6.4L was introduced, Mike Rowe could be seen in one particular video talking about how the cooling system of the F250 was designed to cool an F-550.
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Old 02-15-2011, 09:33 AM
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I for one could use a lot more power. Starting out at 6200 ft and going up from there I suffer from the Higher altitude loss seen during the "Fumble in the Rockies". With mountain passes in the area that are 10% grades or more they really sloooow down the 6.7 towing. And zero "engine brake" assistance also.

But otherwise a great truck and tons better than my 6.4.
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Old 02-15-2011, 09:38 AM
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How much power can it make, you ask? For how long do you want it to make it, I ask.

I'd say it can make roughly 300hp if you're really going to work it hard. Oh, wait, that's just how much it makes in the 550...
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Old 02-15-2011, 09:45 AM
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Quote:
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more factory power has been hinted at...
Without a doubt they already have several planned power-ups ready to go. The marketing types demand it!
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Old 02-15-2011, 11:26 AM
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Will there be a factory tune that get me 400ft lbs of torque, 250 hp, 250,000 miles engine life, and 15% better fuel economy?

Come to think of it... selective cylinder deactivation of up to 4 cylinders would probably get 15% better fuel economy.
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Old 02-15-2011, 05:05 PM
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Quote:
Originally Posted by gearloose1 View Post
Will there be a factory tune that get me 400ft lbs of torque, 250 hp, 250,000 miles engine life, and 15% better fuel economy?

Come to think of it... selective cylinder deactivation of up to 4 cylinders would probably get 15% better fuel economy.
only you would come on a power hungry "Tim the Toolman" thread and ask for less...too funny...but I know you and you are serious.

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Old 02-15-2011, 06:20 PM
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Quote:
Originally Posted by gearloose1 View Post
Will there be a factory tune that get me 400ft lbs of torque, 250 hp, 250,000 miles engine life, and 15% better fuel economy?

Come to think of it... selective cylinder deactivation of up to 4 cylinders would probably get 15% better fuel economy.
I kinda agree here...I don't know about 250/400 but If an upgrade of say...550/1000 will only get you to around 150k,Then I'd be more than happy with the 400/800 flash and 250K.
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Old 02-15-2011, 06:48 PM
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Quote:
Originally Posted by sledhead_24_7 View Post
I for one could use a lot more power. Starting out at 6200 ft and going up from there I suffer from the Higher altitude loss seen during the "Fumble in the Rockies". With mountain passes in the area that are 10% grades or more they really sloooow down the 6.7 towing. And zero "engine brake" assistance also.
I guess I just don't see the problem.

400 HP is more than some semi trucks have. I've pulled the same grade as the "fumble" in the rockies at 20 MPH with the pedal on the floor before with a Kenworth and it's 435 HP 15.2L Caterpillar twin-turbo engine. That truck had a radiator that's much larger than what's found in a light truck like our Super Duties, and it overheated 2/3rds of the way up the hill!

I think it's downright amazing that pickup trucks are beginning to rival heavy duty trucks in power, even though they tow a fraction of the total weight.

Everyone wants to be able to go the speed limit or faster up some steep grades while towing heavy things. This just isn't a reasonable thing when you start to tow 10,000 lbs and over.
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Old 02-15-2011, 06:48 PM
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