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SRT Viper dukes it out with Mercedes SLS Black Series in new Head 2 Head

In Episode 36 of Motor Trend's Head 2 Head, now that the Corvette ZR1 is no more, Jonny Lieberman has to look overseas to the Mercedes-Benz SLS AMG Black Series for a challenger with similar philosophy to the SRT Viper: long hood hiding a high-horsepower engine set way back, rear-wheel drive, tiny trunks. That puts the Viper's 8.4-liter V10 with 640 horsepower and 600 pound-feet of torque against the SLS AMG's 6.2-liter V8 with 622 hp and 468 lb-ft.
However, the congruences in philosophy and magnitude of numbers doesn't translate to the driving experiences of the two, which are literally and figuratively on different continents. Lieberman gets a handle on the two of them on Northern California roads, Randy Probst then finds out how, and how quickly, they can lap Laguna Seca.
They both get kudos for being improvements on their original sources, but only one of them can take the win. You can find out by watching the video below.

Does Alex Rodriguez' Mercedes dealership have a PR problem?

Alex Rodriguez, in case you haven't heard, is seemingly the new Most Hated Man In Baseball, ostensibly replacing commissioner Bud Selig (for now). Rodriguez was slammed with a 211-game suspension due to his role in the MLB's latest steroid scandal in which "A-Roid," as fans have taken to calling the former superstar, was cited with steroid use and attempts to hide his involvement by "engaging in a course of conduct intended to obstruct and frustrate" the investigation, according to the MLB's official report.
Why is this on a car site, then? Because Rodriguez' name is attached Alex Rodriguez Mercedes-Benz in League City, TX. An Ad Age report cites Mercedes-Benz USA in saying that A-Rod owns "about half'" of the dealership. Mercedes, for what it's worth, isn't going to any to any lengths to distance itself from its dealership or its controversial namesake, saying, "We never promoted the fact that A-Rod owned a dealership, so there's really nothing to 'distance' ourselves from. And since his activity is not illegal but rather prohibited by MLB, there's nothing actionable here."
With the scandal still a fresh piece of news and A-Rod's pending appeal, it's difficult to tell what sort of effect, if any, his name will have on the dealership's sales. Ad Age contacted the GM of Alex Rodriguez Mercedes-Benz to get the dealership's view, but no calls were returned. According to Mercedes, any name change is up to Rodriguez and his partner(s) at the dealership. Somehow, though, we think A-Rod has other things to worry about beyond his dealership's name.

2014 Mercedes-Benz SLS AMG Black Series [w/video]

The biggest misconception about the Mercedes-Benz SLS AMG Black Series is that it's simply a higher-performing version of the SLS GT - a closer look, or better yet, a few hot laps on a high-speed racing circuit, reveals that is anything but the case.
Launched in the States in mid-2011, the standard SLS GT is a 583-horsepower, all-aluminum, gull-wing coupe with performance that positions it near the top of the exotic segment. While the AMG team at Mercedes-Benz could have left it alone, their experience with the SLS AMG GT3 race car said there was room for improvement, so they devised the SLS Black Series. The transformation from SLS GT to SLS Black Series is extensive, with no fewer than 17 different significant enhancements.
The engine mapping, crankshaft, connecting rods, valve-train, intake, exhaust and cooling are all modified and the engine's redline bumps up from 7,200 to 8,000 rpm, which pushes output of the hand-built 6.3-liter V8 to 622 horsepower. The power steering receives a new ratio, a coil-over AMG Adaptive Performance suspension is installed along with underbody braces, the track is widened, two-piece carbon-ceramic brakes replace iron rotors at each corner and a lightweight titanium exhaust is fitted beneath. The AMG Speedshift seven-speed dual-clutch gearbox is modified and an electronically controlled AMG rear differential lock ensures the power goes to the pavement. Last on the mechanical upgrades are new lightweight forged wheels (10x19 inches front and 12x20 inches rear) wrapped in special R-compound Michelin Pilot Sport Cup tires.