Chevrolet

• Chevrolet Corvette Convertible: Chevy's flagship drop-top ups the ante with a 6.2-liter LS3 V-8 engine that delivers 430 hp and 424 ft lbs of torque. The culprits for this newfound power are high-flow cylinder heads, an enhanced valvetrain, and, of course, the larger-bore block. In addition to a revised interior with standard brushed-aluminum accents and an optional custom leather package, the Corvette Convertible gets a new remote key fob, fresh sill plates, and standard OnStar and XM Satellite Radio.
• Chevrolet Corvette Z06: The Corvette Z06 arrived as a 2006 model in the third quarter of 2005. It has a 7.0 L (427.6 cu in) version of the Small-Block engine codenamed LS7. The Z06 achieves a fuel economy of 15 mpg-US in the city and 24 mpg-US on the highway, and the output is 505 hp (376 kW). Car and Driver recorded a 0-60 mph time of 3.6 seconds in their March 2007 comparison test.  In addition to the larger engine, the Corvette Z06 has a dry sump oiling system, and Connecting rods made out of titanium alloy. The Z06 officially weighs 3132 lb, giving it a weight to power ratio of 6.2 lb/hp.
• Chevrolet Corvette ZR1: The ZR1 is a high performance version of the Chevrolet Corvette. More powerful than the Z06 model, it is now the most powerful Corvette currently in production (or, for that matter, the fastest Corvette ever to be produced).  The ZR1 engine is a modified LS3, designated the LS9, producing 638 hp and 604 ft-lb. of torque, making this the most powerful production Corvette to date. The LS9 has a sixth-generation Eaton TVS R2300 roots 4-lobe supercharger with an intercooler. The supercharger's four-lobe design offers improved efficiency over three-lobe models. To avoid changes to the hood appearance, the supercharger's output was split into two halves. Each cylinder bank has an intercooler. The intercoolers are from Behr, utilizing an air-to-water, dual-brick design.