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The compression ratio was 9.9:1 for 2010, but was reduced to 9.7:1 for the remaining two years of production. ... GM LS3 engine in a 2008 Chevrolet Corvette. The LS3 ...
The Chevrolet Corvette (C6) is the sixth generation of the Corvette sports car that was produced by Chevrolet division of General Motors for the 2005 to 2013 model years. It is the first Corvette with exposed headlamps (as opposed to hidden headlamps) since the 1962 model. Production variants include the Z06, ZR1, Grand Sport, and 427 Convertible.
For 2008, the Corvette received a mild freshening: a new LS3 engine with displacement increased to 6.2 L (380 cu in), resulting in 430 hp (321 kW; 436 PS) and 424 lb⋅ft (575 N⋅m) (436 hp (325 kW; 442 PS) and 428 lb⋅ft (580 N⋅m) if ordered with the optional performance exhaust). The six-speed manual transmission also has improved shift ...
This vintage sports car uses one of the modern world's best V8s to produce some massive power figures.
The "short block" of the engine is the same as other Land Rover 4.6 HSE models. Short blocks used for the 4.6L Callaway engines were stamped with a 9.60:1 compression ratio marking from Land Rover. The increase of 0.25 points, up from the standard 4.6L compression ratio of 9.35:1 was achieved by a modification to the cylinder heads.
The compression ratio is 9.1:1. The cylinder heads are based on the Corvette's LS3 head and are cast from type 356-T6 Aluminum alloy. The exhaust manifolds are cast iron. The supercharger is a twin four-lobe screw compressor-type unit displacing 1.9 L (116 cu in).
For example, if the static compression ratio is 10:1, and the dynamic compression ratio is 7.5:1, a useful value for cylinder pressure would be 7.5 1.3 × atmospheric pressure, or 13.7 bar (relative to atmospheric pressure). The two corrections for dynamic compression ratio affect cylinder pressure in opposite directions, but not in equal strength.
Chevrolet Performance has aided in the development of many high-performance vehicles. The 2019 Corvette ZR1 was released at the 2017 Los Angeles Motor show by Chevrolet Performance officials. The car is powered by a supercharged LT5 V8 engine that produces 755 horsepower and 715 foot pounds of torque with high octane fuel and high density air.