Officially Official: Corvette ZR1 makes 638 hp and 604 lb-ft
"Developing the LS9 involved more than simply striving for a great horsepower number. Endurance and reliability testing have shown the engine to be robust and low-maintenance, just like other engines in the small-block family" Posted Apr 25th 2008 12:01AM by Sam Abuelsamid Filed under: Tech , Supercars , Chevrolet When Chevrolet officially announced the new Corvette ZR1 just before the Detroit Auto Show this year, it hadn't yet ... via Autoblog