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

AC 378 GT Zagato supercar at 2012 Geneva motor show

British sports car specialist AC is back and teaming up with fabled Italian coachbuilder Zagato to create the new AC 378 GT Zagato, the first all-new AC for some time. The company has had an on-off relationship for much of the past decade, with production switched abroad, management changes and a confusing product line-up. But new management has been installed and are hoping to make a fist of AC Cars, one of the world's oldest car brands.

Chevrolet reveals more details of Camaro ZL1

The 2012 Chevrolet Camaro ZL1 will not be anywhere near as rare as its 1969 namesake when it arrives during the first quarter of next year, but the most powerful production Camaro to date should deliver performance easily worthy of its model designation. Camaro engineers on Thursday offered media members a preview of the upcoming Ford Mustang Shelby GT500 fighter, and the tale of the tape is impressive, especially in terms of grunt. The 6.2-liter supercharged LSA V8 will make 580 hp at 6,000 rpm and 556 lb-ft of torque at 4,200 rpm, besting Chevy's original targets for the engine's output and bettering its efficiency in the Cadillac CTS-V by 24 hp and 5 lb-ft.

Porsche Cayenne S E-Hybrid: The plug-in Cayenne debuts in Paris

The Porsche Cayenne S E-Hybrid arrives in Paris There will come a point when governments realise that car makers are getting too clever at gaming CO2 levels with impressive and sophisticated hybrids. But until then, there’s a growing number of cars that, on the face of it, offer a ‘cake and eat it’ option for buyers. Like the new Porsche Cayenne S E-Hybrid.