General Motors has announced that the world’s most powerful production droptop* – the 2013 Chevrolet Camaro ZL1 Convertible – will officially debut at the 2011 Los Angeles Auto Show in November. Like its coupe kin, the ZL1 Convertible will pack 580 horsepower and 556 pound-feet of torque from its supercharged 6.2-liter LSA V8, besting the Ford Shelby GT500 Convertible’s power figures of 550 hp and 510 lb-ft.

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Good thing Ford is working on that all-new supercharged 5.8-liter V8 for the next-generation GT500. The horsepower wars are anything but dead.

GM tells us that it has added a whole host of supports and reinforcements to the ZL1 Convertible’s body structure in an effort to reduce droptop demons like cowl shake. The improvements include things like a front X brace and rear V brace, a transmission support reinforcement brace, underbody tunnel brace and tower-to-tower brace under the hood.

The Camaro ZL1 coupe goes on sale in early 2012, and we’d expect the convertible to arrive shortly thereafter. We’ll have the full details in Los Angeles next month.
Autoblog