We’ve got a new forum section up, C7 tech/performance, and since C7 Stingray deliveries began about a week ago the aftermarket has already jumped in. Yesterday, we posted a video of Hennessey running the new Vette down the 1/4 mile to establish a baseline but they already have customer C7s in the shop. The top-tune […]
CF member Hypntyz received a rough C4 for his thirtieth birthday that he proceeded to restore, rebuild and modify. When he got it, “it was almost ruined with 117k miles, [it had] flat-spotted tires and chrome-flaking [off of] ZR1 knockoff wheels, faded paint with yellow fiberglass showing, rotten interior, leaking windows and targa top, half […]
It seems that General Motors’ decision to forgo one high-tech feature on the new 2014 Corvette Stingray out of fear it would hurt the car’s image might have been a smart move. According to some of the opinions expressed here, on the Corvette Forum, the idea of adding the fuel-saving stop-start engine technology to the […]
We heard the exhaust in person on a pair of Corvette Stingrays that were the hit of the Bash at the National Corvette Museum back in April and loved the beautiful – and very different – sounds emanating from both cars as they were driven out of the museum. Now Autoblog.com has posted a video
The 2014 Corvette Stingray’s all-new LT1 6.2L V-8 engine is SAE-certified at 460 horsepower at 6,000 rpm and 465 lbs-ft of torque at 4,600 rpm, with the available performance exhaust system. The Stingray is SAE-certified at 455 horsepower and 460 lbs-ft with the standard exhaust system. They are the highest standard power ratings ever for the Corvette, delivered with efficiency that is expected to exceed 26 mpg on the highway.
“The 2014 Corvette Stingray’s LT1 engine is a triumph of advanced technology, delivering more power and torque than ever before with greater efficiency,” said Jordan Lee, Small Block chief engineer. “The LT1’s performance complements the Corvette’s low mass with a tremendous feeling of power that builds as the rpm climbs. Drivers will experience more power and acceleration than ever before with the standard engine – in fact, its power and torque surpass many uplevel engines offered by competitors.”
At 74 horsepower per liter, the LT1 has greater power density than the C6 Corvette’s LS3 6.2L engine and even the C6 Z06’s racing-derived 7.0L LS7. It also produces comparable torque to the LS7 – up to 4,700 rpm – and its peak torque is within five lbs-ft of the 7.0L engine. That torque is generated early and sustained across the rpm band, with 316 lbs-ft available at only 1,000 rpm and 90 percent of peak torque available from 3,000 rpm to 5,500 rpm – giving the lightweight Corvette Stingray excellent acceleration at all speeds.
The new LT1 engine’s high output, and high power density and efficiency are due to several advanced technologies, including direct injection, Active Fuel Management and continuously variable valve timing, which support an advanced combustion system. Direct injection is a primary contributor to the engine’s combustion efficiency, ensuring a more complete burn of the fuel. Direct injection also keeps the combustion chamber cooler, which allows for a higher compression ratio. Emissions are also reduced, particularly cold-start hydrocarbon emissions, which are cut by about 25 percent. Active Fuel Management, or cylinder deactivation, is a first-ever application on Corvette. It helps save fuel by imperceptibly shutting down half of the engine’s cylinders in light-load driving. Continuously variable valve timing is refined to support the LT1 AFM and direct injection systems to further optimize performance, efficiency and emissions.
These technologies support the all-new, advanced combustion system, which incorporates a new cylinder-head design and a new, sculpted piston design that is an integral contributor to the high-compression, mixture motion parameters enabled by direct injection.