While a final download is pending, Ford revealed a healthy helping of tech info about the new 2015 Ford Mustang. This latest data drop includes powertrain ratings, curb weights and chassis particulars as well as listing available upgrades aimed at higher levels of performance from America's original pony car.

GT model to pack 435 horses

The all-new 2015 Mustang will offer a choice of three engines. The base 3.7-liter V6 will now carry a 300-horsepower rating -- down from the current 305 - and 280 lb-ft of torque. A new 2.3-liter EcoBoost 4-cylinder, which features a twin-scroll turbocharger to ensure quicker throttle response and a broader, flatter torque curve, has been locked in at 310 horses and 320 lb-ft of peak twist. Topping the range is the 5.0-liter V8 in the Mustang GT which benefits from a series of internal revamps that up its output from 420 to 435 horsepower and raises torque from 390 to 400 lb-ft. All three can be paired with either a standard 6-speed manual transmission with upgraded linkage that delivers smoother shifting or an optional 6-speed SelectShift automatic featuring a new rev-matching mode to go with steering-wheel-mounted paddles. 

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Ford has given each engine a specific exhaust note, which Shawn Carney, Mustang's powertrain noise, vibration and harshness engineer, says provides "clear feedback about what the car is doing at all times, but without isolating the driver from the action regardless of what engine is in front of you." Carney also ended speculation about rumored major weight increases for the 2015 Mustang. Despite adding substantially more equipment, the base V6 has gained a mere 12 pounds over its 2014 counterpart and the EcoBoost model a mere six. While the new GT fastback has the greatest disparity -- adding 87 pounds - it still boasts an improved power-to-weight ratio relative to the 2014 model.

The best-handling Mustang, ever 

Underpinning the 2015 Mustang is a new stronger but lighter architecture that provides a stiffer and stronger foundation for its all-new fully independent suspension. The setup matches MacPherson struts up front with an integral link rear setup - the first Mustang IRS package since the 1999-2004 SVT Cobra. Complementing this new and more sophisticated hardware is revised geometry that doubles the anti-squat/anti-lift forces. Collectively, the changes promise to make this the best-handling Mustang ever with more confident cornering and greater stability under hard acceleration and braking. 

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Speaking of stopping power, the 2015 Mustang will offer three different brake fitments. The standard 4-wheel ABS discs are found on the V6 and EcoBoost models, while the GT is upgraded with the binders used on the 2014 model's optional Track Package. Those bigger, beefier brakes also are part of the new EcoBoost Performance Package. The Mustang GT Performance Package goes one step further, featuring the same upsized brakes - with 6-piston Brembo front calipers - found on the 2014 Shelby GT500 model. In addition to tauter suspension settings and unique steering/ABS/stability control programming, both Performance Packages employ staggered-width 19-inch wheel/tire packages, deeper final-drive ratios and front strut-tower braces. The GT upgrade also includes a more aggressive front splitter and a Torsen limited-slip differential. 

The 2015 Ford Mustang will go on sale this fall. Pricing will start at $24,425 for a base coupe and $29,925 for a V6 convertible. A top-line Premium-spec GT Fastback will open at $36,925 and its drop-top counterpart will command $42,425. 

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