2009 Corvette ZR1 Power Numbers Finalized: LS9 V8 Hits 638 HP!Ray Wert4/25/08 10:20amFiled to: 2009 Corvette ZR109 ZR12009 Chevrolet Corvette ZR12009 Chevy Corvette ZR12009 Corvette2009 ZR12009 ZR1 EngineCorvette LS9 Enginecorvette zr1GmLS9 EngineNew Chevy CorvetteSupercharged CorvetteZR1 EngineCorvetteLs9Top921EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkWe got a release from the folks at the General yesterday, and we were told we could run it at midnight-plus-one, but then we forgot about it. These things happen, you know. We mean, who gets excited about something as fait accompli as the 2009 Corvette ZR1 getting just over 620 HP? Well, if your answer is everyone, you're probably right. And why shouldn't we be excited about Zee new Really fast One from Chevy? Especially since they've now got officially certified power ratings on that beautiful Jakegasmic LS9 engine — 638 HP, nearly 103 horses per liter — and 604 lb-ft of torque, which'll let the new supercharged Corvette ZR1 break that all-important 200 MPH speed barrier. We knew there was a reason we liked this from the moment we first exploded the LS9 for all to see. Next question however is whether Wes will be back in the road test saddle in time for what we're expecting will be a summertime drive of the new ZR1 or whether it'll have to be one of us other Jalops jumping behind the wheel of the supercharged new Corvette. This may be the first time we've ever hoped someone wouldn't get better as quickly as possible. We kid. On the square. Anyway, what we do know is we've got the full press release after the jump.