Caught! Ford's Upcoming Scorpion 6.7-Liter Diesel V-8

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Our spies have caught a glimpse of Ford’s new in-house-designed 6.7-liter V-8 diesel engine under the hood of a Super Duty engineering mule. Code-named Scorpion, the new engine is expected to replace the Navistar-sourced 6.4-liter V-8 Power Stroke diesel engine in Ford's heavy-duty pickups by 2011.

In earlier spy photos of Scorpion-equipped test trucks, we wondered why the Super Duty mules needed raised hoods. Now we think we know the reason: The picture clearly shows a gigantic radiator used to cool the engine for extreme towing applications.

Ford increased the size of the radiator in the 2008 Super Duty, when the 6.4-liter V-8 diesel debuted, by 33 percent. Now, we estimate its surface area has increased approximately another 10 to 20 percent with the new radiator. It’s so large it apparently has to be canted backward to fit under the hood!

Our sources say the Scorpion will share several key traits with GM's revolutionary new light-duty 4.5-liter Duramax V-8 diesel engine. Intake and exhaust flow through the cylinder heads is reversed (relative to conventional diesel-engine design), with the exhaust exiting directly into dual sequential turbos sitting in the engine's valley. The Scorpion will also use lighter aluminum cylinder heads, abandoning the cast-iron heads found in today's 6.4-liter Power Stroke.

Power targets are said to be more than 390 horsepower and 720 pounds-feet of torque. Today's Power Stroke diesel is rated at 350 hp and 650 pounds-feet.

Scorpion fuel economy is expected to improve by 3 mpg or more versus the current Power Stroke. Helping the Scorpion's mileage will be a new six-speed automatic transmission, like the 2009 Ford F-150 has.

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Comments

Ive owned commercial tractor trailers for over 30 years, and I have 2.5 million miles logged with no accidents, I owned Cats. Cummins, Macks,,, Istill cannot figure these CAR., manufacters why do they still proceed with these "V" style diesel? evey major truck engine manufacter, has for the most part abandoned this design, ie. the 5.9 lt Cummins when purchased directly from a Cummins dealer as a remanufactuered engine comes with a 500,000 mile warranty, plus if Ford ( AND I AM A Ford man,, who still owns and drives the 1978 F150 that I purchased New 30 years ago) had any Brains the way Chrysler has with the Cummins,, Ford through their long association with Caterpiller Diesel would have used the "CAT" engine in their pickups! Imagin???,, A Gigantic D-11 pushing in the back ground and a black F250 driving onto the screen! but what do I know?, Im just a dumb owner-operator of 31 years.

I agree with the previous comment that a CAT engine in a Ford Superduty would have been awesome, but also believe that since Ford had all the bugs worked out of the 7.3, they should have stuck with it and made a fuel mixer to get their EPA requirements fulfilled. I have a 6.0L as I missed my chances at a brand new 7.3. I mix 5% biodiesel into my fuel, and have a nitrogen system that I built myself, sitting in the truck box and tubing leading it into the intake. I get 35MPG on long highway trips, and I have a friend who does that pollution testing for the government, who hooked it up to my truck. My truck more than passes the 2012 proposed requirements, in fact putting out so little pollution it is nearly not on the scale, like one to three parts per million, with the exception of NOX at 12 to 20 parts per million, and I produce no visible carbon particles. Prior to the nitrogen, I used to get a black ring aroung the very tip of my tailpipe, but now I get no dirt at all. Propane added to the diesel will do the same thing as nitrogen, and that is something that could be factory added and controlled. My setup is experimental, and done on a shoestring budget. What is wrong with the large auto manufacturers that they cannot get something this simple together?

i agree with the "just dumb owner operator" (even tho my dad is a truck driver and i know figuring out how to log some loads takes rocket science) An I6 config. is by far the best! And all though the International Ag. division has long been gone International was/is know for great in-line engines why don't they produce a smaller dt466 or even go back to the days when they made tractor engines and use the block of one of those. My idea of a good add would be a super stock 1466, 1206 or something red blowing smoke and pulling a sled and ask if anyone else has had as many pulls under their belt.



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