The latest SAE certifications have confirmed that the 2014 Corvette Stingray has the most powerful standard engine ever. Namely, the new LT1 6.2L V-8 engine has been rated officially at 460 horsepower (343 kW) at 6,000 rpm and 465 lb-ft of torque (630 Nm) at 4,600 rpm, with the available performance exhaust system.
The Stingray is SAE-certified at 455 horsepower (339 kW) and 460 lb-ft (624 Nm) with the standard exhaust system. These numbers signify that the particular Corvette model has the highest standard power ratings ever. In addition the efficiency that it shows is expected to exceed 26 mpg on the highway.
Therefore, drivers can expect to experience even greater acceleration because the power and torque of the unit surpass many other engines offered on the market. As a matter of fact, at 74 horsepower per liter, the LT1 offers greater power density than the C6 Corvette’s LS3 6.2L engine and even the C6 Z06’s racing-derived 7.0L LS7.
In addition, it also generates torque up to 4,700 with 316 lb-ft available at only 1,000 rpm and 90 percent of peak torque available from 3,000 rpm to 5,500 rpm. This of course results in nothing else but outstanding acceleration at all speeds.
What is more, the official results show that the Chevrolet can sprint form standstill to 100 km/h in less than four seconds. The high power density and efficiency of the engine are due to several advanced technologies such as direct injection, Active Fuel Management and continuously variable valve timing.
First of all, the direct injection is the main reason for unit’s combustion efficiency. It also ensures that there is a complete burn of the fuel in the air-fuel mixture which is achieved by precisely controlling the mixture motion and fuel injection spray pattern. The same technology also keeps the combustion chamber cooler resulting in higher compression ratio and reduced emissions.
Secondly, the Active Fuel Management is a synonym of cylinder deactivation. It is the first-ever application which helps save fuel by shutting down half of the engine’s cylinders in light-load driving. Thirdly, the continuously variable valve timing is now upgraded and it support the LT1 AFM and direct injection systems. The effect is additional enhancement of the performance, efficiency and emissions.
These three technologies on other hand support the new advanced combustion system. The latter includes new cylinder-head and sculpted piston design, which in turn contributes towards high-compression.
It is also important to mention the other engine features include that play their part here. These are the advanced oiling system with oil-spray piston cooling and available dry-sump oiling, engine-mounted camshaft-driven fuel pump, intake manifold with “runners in a box” design, four-into-one exhaust manifolds based on the design of the LS7 engine, Small Block legacy.
2014 Chevrolet Corvette Stingray Coupe will be available at dealerships this autumn while its Convertible sibling – by the end of the year.
Source: Chevrolet
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