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Ford dissects the heart of the 2015 Mustang, its engine range

Happy Mustang Day. Are you tired of hearing about the 2015 Ford Mustang yet? No? Good, here's a bunch of mechanical data on Ford's sixth-gen muscle car, along with cutaways of the GT's 5.0-liter V8 and the new 2.3-liter, EcoBoost four-cylinder shown above. We also have a smattering of info on the Stang's updated transmissions and an exploded-parts-diagram view of its all-new independent rear suspension.
Ford is set to make waves offering the Mustang with a turbo for the firs time since the small-volume SVO of the 1980s. Displacing 2.3 liters, the engine's twin-scroll turbo should help the four-cylinder turn out a projected 305 horsepower and 300 pound-feet of torque, while also returning the best fuel economy in the Mustang's engine lineup. As we said in our Deep Dive, the EcoBoost will be slotted in as a premium engine, above the 3.7-liter V6 but below the 5.0-liter V8.
Speaking of that high-revving eight-cylinder, it's receiving a new cylinder head with high-flow ports. The intake and exhaust valves are larger and the cams have been replaced, among other tweaks. It should rev even higher thanks to a rebalanced crankshaft and forged connecting rods. Ford is still claiming a projected 420 hp and 390 lb-ft, although as many of the changes for the 2015's V8 come from the 2013 Boss 302, we're going to assume there's some sandbagging at work.

Next SVT Mustang may axe Shelby name, go naturally aspirated

Following our first glimpse at the 2015 Ford Mustang out on the road, the fine folks at Road and Track have divulged some details on what the Blue Oval's next pony might have in store. We've already seen that the car will get some very sleek, Evos-inspired design cues, and an independent rear suspension is indeed in store. These new details, however, concern the muscle car's beating heart.
For starters, the base Ford coupe is expected to carry on with V6 power, likely from the same 3.7-liter unit found in today's car. From there, R&T says the next step up will be a four-cylinder EcoBoost engine, likely displacing 2.3 liters, putting out as much as 350 horsepower. Of course, a Mustang wouldn't be a Mustang without V8 thrust, and R&T states that the 5.0-liter Coyote V8 will continue on into the 2015 car, making something like 450 horsepower.
But it's at the high end of the Mustang range where things will, reportedly, get very, very interesting. Road & Track claims that the top-shelf 'Stang will likely lose the supercharger from its engine, producing a metric crap-ton of naturally aspirated grunt instead. Additionally, the SVT-fettled Mustang will likely be dropping its Shelby moniker, in favor of "a name you're familiar with," according to the magazine (you know, like, Cobra).

40+ cars that barely avoid the gas guzzler tax

The Gas Guzzler schedule, with mpg ratings and charges that haven't changed since 1991, lays out which fuel-swillers owe what to Uncle Sam.
I started thinking about the "Gas Guzzler Tax" - considerably less well known as The Energy Tax Act of 1978 - when I was driving Dodge's new Challenger SRT Hellcat last week. Unsurprisingly for a car that can burn 1.5 gallons of gas per minute at max tilt, theoretically able to empty a full tank of premium in about 13 minutes, the Hellcat will be subject to the Gas Guzzler Tax schedule when it goes on sale.