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111SEMA Preview: GM Performance Parts 638-hp LS9 Crate engine

Click above for a high-res gallery of the LS9

97Officially Official: Corvette ZR1 makes 638 hp and 604 lb-ft

var digg_url = 'http://digg.com/autos/Corvette_ZR1_most_fuel_efficient_600_hp_car_in_the_world'; When Chevrolet officially announced the new Corvette ZR1 just before the Detroit Auto Show this year, it hadn't yet finished the certification of its new power-plant, the supercharged LS9. At that time, all the engineers would tell us was that the supercharged 6.2L V8 would produce a minimum of 100hp/L or 620 hp. Three months have passed since we got our first official look at the LS9 and the numb

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