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2015 Ford Mustang vs. Camaro and Challenger [w/poll]

The horsepower wars are tightening among the Detroit Three, as the Ford Mustang, Chevrolet Camaro and Dodge Challenger are getting bigger, more powerful, and yes, more fuel efficient.
That came into sharper focus this week as more information was revealed about the most insane Challenger ever - the 707-horsepower Hellcat - followed quickly by Ford's in-depth showcase of the 2015 Mustang in Dearborn.
It's shaping up to be a golden age for enthusiasts, and what's under the hood is becoming more important than ever.

2013 Dart GT will hold us over until SRT stokes Dodge's handsome compact

No, this isn't quite the Dart SRT4 we've been waiting for - and still believe is coming - but as part of its 2013 Detroit Auto Show lineup, Dodge will be showing off the slightly sportier Dart GT seen here.
Building on the already well-equipped Limited model, the GT adds performance enhancements including a more powerful engine, 18-inch aluminum wheels, sport suspension calibration, unique front fascia and dual exhaust. Inside, you'll find perforated Nappa leather seats, a heated steering wheel and front seats, dual-zone climate control, remote start (if you spec the automatic transmission), Chrysler's 8.4-inch Uconnect touchscreen, a seven-inch TFT display in the gauge cluster, and a whole lot more. Optional goodies include hyper black aluminum wheels, a technology group (pushbutton start, keyless go, rain-sensing wipers, blind spot monitoring and smart-beam headlamps), power sunroof, Sirius radio, Garmin navigation, Alpine premium sound and high-intensity discharge headlamps.
Powering the Dart GT is Chrysler's 2.4-liter MultiAir2 four-cylinder engine producing 184 horsepower and 174 pound-feet of torque. That grunt is sent to the front wheels via a standard six-speed manual transmission, but a six-speed automatic 'box is optional.

Chrysler almost smothered the Hellcat before it lived

Chrysler's 6.2-liter supercharged Hellcat V8 was an absolute sensation from the very moment it was announced, and honestly, how could it not have been? Packing 707 horsepower and 650 pound-feet of torque, its numbers immediately put every other production muscle car (and many supercars) to shame. Plus, we soon learned that would be wrapped in a package retailing for around $60,000 - a pittance compared to other vehicles offering similar grunt. However, the Hellcat almost never got the chance to rumble under the hood of the Challenger and Charger.
The Hellcat was initially proposed back in 2011, back when Fiat was deciding its future strategy for Chrysler Group, according to Automotive News. At the time, the company was just emerging from its bankruptcy doldrums, and an ultra-high-performance V8 wasn't exactly a must-have item. The program didn't move forward. However, SRT engineers kept fighting, according to AN, and four months later, they received the green light to pull the project off the shelf and continue developing the Hellcat. The muscle car world is certainly better for that decision.
The work of those engineers focused on taking Chrysler's standard 6.2-liter V8 and making it reliably handle all of the extra power from the supercharger. "It came down to micron levels of changes in the crank to be able to withstand the pressures of the engine," said Chris Cowland, director of advanced and SRT powertrain, to Automotive News. The changes amounted to switching out about 91 percent of the parts to make the Hellcat, including some quite minuscule alterations. For example, the washer holding the supercharger pulley is embedded with industrial diamonds to keep it from slipping.