In true American form, Specialty Vehicle Engineering says in its brochure that there’s “no substitute for cubic inches or supercharging,” which is why the 1000 HP Corvette features a 6.8-liter bored and stroked V8 based on the Grand Sport’s factory 6.2-liter LT-1 engine.
gets a block that has been blueprinted (i.e. its components are chosen to meet exacting tolerances), as well as a forged crankshaft, forged H-beam rods, forged aluminum pistons, and an upgraded fuel system.
the Stage II 1000HP engine—which makes an SAE certified 1,000 horsepower and 850 lb-ft according to vice president David Hamburger—gets CNC ported high-flow LT4 heads, stronger main and head fasteners, a 20 percent larger displacement supercharger (2,900 cc, to be exact—which the company says yields 25 percent more boost), a 10 rib belt drive, a 10 percent larger throttle body, an upgraded exhaust system, and a different fuel system. Automatic versions get beefier internals (with a 12 month, 12,000 mile warranty), while manual models get a different clutch than stock.
The Stage II 1000 HP Yenko/SC Supercharged Corvette costs $68,9995 in addition to the stock Corvette Grand Sport, while the automatic will run you $77,995 plus the factory car.
The packages can be ordered through authorized GM dealers, and each come with a three year, 36,000 mile “engine and supercharger assembly limited warranty.”