The SAE-certified numbers are in. Now it's official: The 6.2L LS9 engine developed for the new Corvette ZR1 makes 638 hp at 6,500 rpm and 605 lb-ft of torque at 3,800 rpm. That makes the LS9 the most ...

PONTIAC, Mich. – When it was introduced at the North American International Auto Show in Detroit earlier this year, the 2009 Chevrolet Corvette ZR1's power was estimated at 100 horsepower for each of ...

We likely don't have to tell you the details of the Corvette ZR1's LS9 engine, but just in case, it's a 6.2-liter (376ci) mill that's force-fed by a 2.3-liter Roots-type supercharger using Eaton's ...

We may earn a commission from links on this page. 2009 Corvette ZR1 Powered By The Most Powerful Production Engine Ever From GM: The Supercharged LS9 Small-Block V-8 PONTIAC, Mich. - When it arrives ...

Nothing says hot rodding like dipping into the stock parts bin at GM, mixing and matching OEM components, and coming out the other side with almost 50 extra rear wheel horsepower and OE reliability.