At the heart of the latest Grand Sport lies the venerable LS3 engine. Yeah, it's the base engine for the current crop of Vettes, but for the GS, Chevy upped the power by a couple horses, bringing it to an even 430 hp. If you check the box for the optional exhaust system, that number goes up six ticks to 436. Not that you really need all that power (burnouts are possible in second gear). It's a lot of engine, and sometimes you can feel it: Revving is laborious at times. But for driving around the city, the engine is remarkable, leaving you to never have to go higher than second or third gear.