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

GM weighs moving next GMC Sierra upscale

General Motors will do more to differentiate the GMC Sierra from the Chevrolet Silverado when redesigned versions of the pickups go on sale in the first half of 2013. Sierra models may get a longer list of standard equipment and a higher sticker price than comparable Silverados, Mark Reuss, GM president of North America, said in an interview at the Detroit auto show. A similar strategy has proved successful in differentiating GMC's Terrain and Yukon models from Chevrolet's Equinox, Tahoe and Suburban.

2013 Mercedes-Benz SLS AMG GT gets more letters, power

Two additional letters will spell more power for the 2013 Mercedes-Benz SLS AMG. The supercar will be named the SLS AMG GT for the next model year, which is meant to call attention to the light freshening that the glamorous two-seater will receive when it goes on sale in mid-November. Output grows to 583 hp from the naturally aspirated 6.2-liter V8, up from 563 hp in today's car.

Porsche Panamera Turbo S (2011) first pictures

This is the new Porsche Panamera Turbo S, and because the GT2 RS has sold out, it’s now the most powerful Porsche on sale. Porsche Panamera Turbo S: the numbers The new Porsche Panamera Turbo S is powered by the same direct injection and twin-turbo 4.8-litre V8 that’s found in the regular Panamera Turbo. But thanks to new turbochargers with titanium-aluminium turbine wheels (which cut weight and improve responsiveness) and a new ECU, the power output climbs from an already impressive 493bhp and 516lb ft to 550bhp and 553lb ft.