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Corvette Z06 and Viper TA square off at the strip

There are many long-standing grudge matches among automobiles: 911 vs GT-R, Mustang vs Camaro, Ferrari vs Lamborghini... but as far as high-end American metal goes, it doesn't get much more legendary than Viper vs 'Vette. So after Chevy released the new Corvette Z06, we knew it was only a matter of time before it would have to square off against the Viper TA. And what better place to pit these two parallel pillars of American performance than on the drag strip? Fortunately that's just what we have here. In one corner, the 2014 Dodge Viper TA, with its 8.4-liter V10 pumping out 640 horsepower and 600 pound-feet of torque. In the other, the 2015 Chevrolet Corvette Z06, the supercharger on its 6.2-liter V8 more than making up for the discrepancy in displacement and cylinder count to produce 650 hp and just as much torque. But numbers don't tell the whole story, so watch the video clip to see which reaches the end of the quarter-mile first. News Source: To the Floor via YouTubeTip: James Chevrolet Dodge Videos drag race chevy corvette z06 quarter mile drag strip srt viper ta

Chrysler says its 8-speed transmissions will save 700 million gallons

Chrysler Group's TorqueFlite eight-speed transmission could be earning some serious green bragging rights if the company's projections are correct. The recently widely proliferated automatic gearbox, which is now in more than a million vehicles around the world, is poised to save drivers an estimated 700+ million gallons of fuel over the vehicles' lifetimes (an expected cost savings of $2.5 billion). In addition, Chrysler expects a reduction in CO2 emissions by more than six million metric tons. According to Chrysler, and depending on the vehicle, the TorqueFlite can improve fuel economy. The TorqueFlite autobox features particularly close ratios from fifth to eighth gear (see the press release below for the specific numbers), and uses low-viscosity fluid that doesn't need to be replaced. Transmission software adapts to the driving situation to optimize efficiency based on driver behavior, temperature, grade, stability control, and longitudinal and lateral acceleration. The TorqueFlite is capable of handling a variety of duties. As evidenced by the wide range of vehicles Chrysler Group has seen fit to equip with the eight-speed transmission, the TorqueFlite is capable of handling a variety of duties. Since its 2012 introduction, the TorqueFlite has gone from performing cog-swapping duties in Dodge Charger and Chrysler 300 models equipped with the 3.6-liter Pentastar V6 to changing gears in vehicles such as the Pentastar- and Hemi-powered Dodge Durango, Jeep Grand Cherokee and even the Ram 1500 EcoDiesel. For the 2015 model year, the eight-speed is finding its way into even more vehicles with the addition of a third version. In addition to the American-made TorqueFlite 845RE and 8HP70, the new 8HP90 will be manufactured in Saarbrucken, Germany. The 8HP90 is designed for higher torque loads, making it ideal for high-performance vehicles like the 2015 Dodge Challenger SRT Hellcat. The already-in-use 8HP70 will expand its duties to be used in 2015 Hemi models such as the Dodge Charger, Challenger, and Challenger SRT8. You can see the list of those benchmarks in Chrysler's press release below.

2015 Dodge Challenger SRT Hellcat [w/videos]

Darrell Waltrip once said, "If the lion didn't bite the tamer every once in a while, it wouldn't be exciting." The sentiment behind that aphorism is causing my adrenal gland to wake up as Dodge and SRT drivers and engineers - somber-faced to a man - give me the track talk that will precede my driving the 2015 Dodge Challenger SRT on the circuit at Portland International Raceway. PIR might not be Daytona, and the 707-horsepower Challenger Hellcat might seem tame to a legend like ol' Jaws, but there's a not-small part of me that's thinking about how hard Dodge's fire-breathing kitty might bite.
Just a few hours previous, I'd gotten behind the wheel of the Hellcat for the first time, letting its hyperbole-spitting, supercharged V8 Hemi pull me yieldingly through Portland's morning commuter traffic. Lulled into a cocky certainty by the Challenger's good manners at low speed, I drove the throttle just a hair too deep, too fast when I ran on to the highway ramp. For just an instant the rear tires were utterly drenched in torque, and the back end of the big Dodge loosened up like a drift car on a wet track. Throttle steer lives at the fleeting whim of your right foot in this car.
It was no big thing to lay off the gas and pull the Hellcat back in line as I entered the highway, but the incident did get me to thinking: What will this car do to me on a road course?