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Ford EcoBoost V6 hits the dyno before hitting the track

Ford Racing just unveiled the Riley Daytona Prototype that will make its racing in the United SportsCar Racing Championship Rolex 24 at Daytona in January, and now it has released a video showing development of twin-turbo 3.5-liter EcoBoost V6 that powers the car. Using the same block and heads that can be found on a production Ford Taurus SHO, this new racecar benefits from the collaboration between Ford Racing and Ford powertrain engineers.
While we still don't know what kind of power this engine is putting out, it has definitely gotten a workout at Ford's 17G dyno. This area deep within Ford allows the automaker's racing program to work hand-in-hand with production engine programs, which can be a benefit to racing operations and production cars alike. Scroll down to hear a few people from Ford talk about the crosspollination between its racing and engine teams and watch the EcoBoost get red hot on the dyno.

Camouflaged Shelby GT350 seen on the street

The Ford Shelby GT350 Mustang made a grand debut at the 2014 LA Auto Show, and its more extreme GT350R sibling bowed at the 2015 Detroit Auto Show. With the order guides already leaked and the R lapping the Nurburgring in a claimed 7:32.19, many of the big questions about the high-performance pony cars have already been answered. However, when they aren't showing up at events, Ford apparently still sees reason to keep the models fully camouflaged on the street. Case in point: this recent video showing off one in testing. With the design already fully unveiled, there's not much left to spy under all of the concealment. This short clip does provide a real-world opportunity to hear the song of the 5.2-liter V8 with its flat-plane crank, though. As a development car nothing here is final, but based on this video, Ford is definitely making sure the Shelby's engine sounds great. Related Video:

Are you a new Ford Mustang SVO? [w/video]

When Ford announced that its 2015 Mustang would arrive with a 2.3-liter EcoBoost four-cylinder engine, three letters came to mind: SVO. While Ford hasn't said a word regarding the rebirth of a Mustang SVO model, this latest set of spy shots shows us something very, very interesting. Allow us to explain.
The Mustang prototype in these photos looks very similar to the GT500 test cars we've spotted before - same bulging hood, aggressive front fascia and air vents aft of the front wheels. What's different, however, is around back. Have a look at the exhaust, and note that instead of the GT500's usual quad pipes, two of the exhaust outlets have been capped off.
Our spies point out that these exhaust outlets could be closed for some sort of emissions testing or another engineering reason, but it's also important to note that the engine and exhaust notes of this car sound completely different from earlier GT500 prototypes. We've got a video below that compares the two.