2015 Corvette Z06 Performance Data Recorder at Virginia International Raceway.
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2015 Corvette Z06 :
The all-new 2015 Corvette Z06 is the most powerful production car ever from General Motors and one of a few production cars available in the United States that delivers more than 600 horsepower.
The Z06’s LT4 supercharged 6.2L V-8 engine is SAE-certified at 650 horsepower (485 kW) at 6,400 rpm and 650 lb-ft of torque (881 Nm) at 3,600 rpm.
Compared with other supercar engines, the LT4 is a veritable fountain of low-end torque, producing 457 lb-ft (619 Nm) just off idle and 625 lb-ft (847 Nm) by only 2,800 rpm. The V-12-powered Ferrari F12 Berlinetta, for example, produces about 28 percent less torque than the Z06, despite offering about 12 percent more horsepower – and its peak torque isn’t achieved until 6,000 rpm. The LT4 maintains 90 percent of its peak torque, or 592 lb-ft (802 Nm), from 2,500 to 5,400 rpm.
The new LT4 engine eclipses the Porsche 911 Turbo S engine’s peak power levels by 90 horsepower (67 kW) and 134 lb-ft of torque (182 Nm).
The new LT4 engine is based on the same Gen 5 small block foundation as the Corvette Stingray’s LT1 6.2L naturally aspirated engine, incorporating several unique features designed to support its higher output and the greater cylinder pressures created by forced induction, including:
•Rotocast A356T6 aluminum cylinder heads that are stronger and handle heat better than conventional aluminum heads
•Lightweight titanium intake valves
•Machined, forged powder metal steel connecting rods for reduced reciprocating mass
•High 10.0:1 compression ratio – for a forced-induction engine – enhances performance and efficiency and is enabled by direct injection
•Forged aluminum pistons with unique, stronger structure to ensure strength under high cylinder pressures
•Stainless steel exhaust manifolds and an aluminum balancer that are lighter than their LT1 counterparts
•Standard dry-sump oiling system with a dual-pressure-control oil pump.
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Option Auto est un magazine automobile français créé en 1984. Sa baseline ? Passion, personnalisation, exception automobile.
Created in 1984, Option Auto is a french magazine dedicated to sporty and luxurious cars.
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★ Corvette Z06 with 650 HP • On Board (Option Auto)
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