Some hate them and feel nauseous whenever a classic car is modified, and then some can ... This engine famously powered the C6 Corvette ZR1, where it produced 638 hp and 604 lb-ft (819 Nm ...

The C6.R is based on the ZR1, but comes in with about 500 horsepower to push its 2,745-pound weight and uses a sequential transmission and slicks. The ZR1 works with 638 horses but has 3,345 ...

The ZR1 skipped the C5 but showed up again, sans hyphen, in the 2009 C6 Corvette. Now fielding a supercharged 638-hp LS9 (604 lb-ft of torque) engine, it was the first factory Corvette to top 200 mph!