Home Signal to Noise Coupes Convertibles Sedans Miscellanea CLK430 Engine: 4,266cc SOHC 24-valve V8. High-pressure die-cast aluminum alloy block with aluminum heads. Forged crank and rods. Chain driven single over head cam with three valves per cylinder. 10:1 compression ratio. 89.9mm Bore / 84.0 stroke Bosch Motronic ME 2.8 engine management system with integrated sequential multipoint fuel injection and phased dual plug ignition. This includes individual cylinder control of fuel spray, electronic throttle control, spark timing and phase, and antiknock control. Two high-energy ignition coils / spark plugs per cylinder, with 100,000-mile spark plug intervals. Electronically controlled throttle. Magnesium two-stage variable length intake manifold. 279 HP at 5750 RPM 295 lb-ft of torque between 3,000 and 4,400 RPM Engine Details "Mercedes-Benz" and "AMG" are registered trademarks of Daimler AG.  This website is not affiliated with, sponsored by, nor authorized by Daimler AG, Mercedes-Benz USA, any of their affiliates, nor their subsidiaries. © Marcus B. Fitzhugh 2005 Mercedes-Benz Specifications