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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.

Chris Harris pits Fiesta ST against Mercedes G63 AMG in 0-60 battle... sort of

Vehicle performance tests are serious business, with reputations made or broken by things like braking distance, top speed, and lateral g-forces. King of the metrics, though, is the 0-60 run, which for unknown reasons has become the benchmark for what truly makes a car a performance machine.
Now, Chris Harris from Drive has turned the whole idea behind the sprint to 60 on its ear. Taking a new Ford Fiesta ST, Harris asks a simple question: would the ST be quicker to 60 on its own, or on a trailer being towed by a Mercedes-Benz G63 AMG?
It's a fair question, really. The Fiesta Harris tested hit 60 in 7.2 seconds on a slightly uphill section of runway. It should be noted that Harris quotes his ST at 182 horsepower, which is about 15 ponies less than what we're getting in the US, so these numbers might not hold up all that well against an American model. The G63 AMG, meanwhile, is a 536-horsepower monster, powered by a twin-turbo V8 that, able to propel the big SUV to 60 mph in just 5.2 seconds without towing a Fiesta.

Will the Ford GT make 630 hp?

Ford intends to build just 250 examples of the next-generation GT annually when production begins next year. That's low even by supercar standards, but anyone with an Xbox One can drive the highly anticipated model right now in the demo for Forza Motorsport 6. The car is even on the cover of the retail version, but the game might be giving a glimpse at one of the upcoming vehicle's biggest secrets. According to the specs page, the GT makes 630 horsepower and 539 pound-feet of torque, according to Motor Authority. Weight is shown at 2,890 pounds with a front/rear distribution of 43/57. Until now, Ford's only comment on the GT's output from its 3.5-liter twin-turbo V6 is "more than 600 horsepower," and that's certainly the case here. If accurate, the figures make the new model 130-hp more powerful than than the last GT, while also being hundreds of pounds lighter. Compared to modern competitors, the GT would be less powerful than a Ferrari 488 GTB and heavier than a McLaren 675LT. Unfortunately, Ford isn't commenting on the numbers in the game. "As we stated back at NAIAS, the Ford GT will produce more than 600 horsepower, and we can't speak to what Forza includes as specifications in their video game," company spokesperson Matt Leaver said to Autoblog via email. Don't think this is all doom and gloom, just yet. For one thing, more than numbers make a great car. Plus, the GT is still quite some way out from production, and spy shots still show it under development. Even if these figures are accurate at the time of Forza's development, that doesn't mean that they can't change in the meantime. Related Video: