Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Pace cadets: At AMG academy, students take their finals with their right feet

Mercedes-Benz USA launched the AMG Challenge in 2002, a program touted as "a chance to experience the thrill of driving the newest Mercedes AMGs on some of America's best racetracks." This year, MBUSA abandoned the Challenge in favor of the AMG Driving Academy, a multistage driver-development program pioneered by AMG in Europe. The difference? According to Greg Clark, AMG manager, "the Challenge was more about the cars, while the Academy is more about the driver." Having participated in both the Challenge and now the Academy, we'd say that difference is subtle, at least as it applies to the one-day program.

Chevrolet is bringing CNG power to the Silverado HD

Chevrolet is taking CNG-powered vehicles seriously, with so many of their trucks being used in commercial fleets, so it was perhaps no surprise that we'd see a version of the 2015 Silverado HD that can be run either on gasoline or compressed natural gas before long. Chevrolet brought the 2015 Silverado 2500 HD CNG to the Chicago Auto Show, to let prospective buyers as well as the media to learn about at the savings that could be realized with this environmentally friendly setup. The HD CNG truck will offer bi-fuel capability coupled with its 6.0-liter V8 engine that's been modified with hardened valves and valve seats to run on compressed natural gas.

Nissan Juke-R is prepared for its heart transplant: Video

Nissan, in its quest to make the craziest compact car in the world, has released another video of the Nissan GT-R-to-Juke engine transplant. The video shows some of the frame cutting that needed to be done to fit the twin-turbocharged V6 into the Juke small crossover, along with the roll cage being welded in. Jigs are also attached to keep the frame straight while the work is going on.