Corvette LT1 – Among Most Advanced V-8 Engines in World

6 2L Small Block
Click on Picture of LT1 for Larger View

“The Holy Grail for developing a performance car is delivering greater performance and more power, with greater fuel economy, and that’s what we’ve achieved,” said Tadge Juechter, Corvette Chief Engineer. “By leveraging technology, we are able to get more out of every drop of gasoline, and because of that, we expect the new Corvette will be the most fuel-efficient 450 horsepower car on the market.”

“Our objective for the development of the all-new LT1 was to raise the bar for performance car engines,” said Mary Barra, Senior Vice President, Global Product Development. “We feel that we have achieved that by delivering a true technological masterpiece that seamlessly integrates a suite of advanced technologies that can only be found on a handful of engines in the world.

“What makes this engine truly special is the advanced combustion system that extracts the full potential of these technologies. The art and science behind that combustion system make the Corvette LT1 one of the most advanced V-8 engines in the world,” said Barra.

This "advanced combustion system" includes the following critical components:

  • Direct injection, a first time for an overhead-valve engine.  DI keeps the combustion chamber cooler, allowing for a higher compression ratio.  Emissions are also reduced.
  • Active Fuel Management, GM's well-received and highly competent system for deactivating four of the eight cylinders when the load is light.  The 6.2L will function as though it were a 3.1L engine during this phase.
  • Continuously variable valve timing, pioneered by GM for overhead-valve engines.
  • Modifications to the engine at every turn for a cleaner burn, including a new cylinder-head design, a sculpted piston design, and the placement of the electrode closer to the center of combustion to make it optimal.

10 million hours of computational analysis were conducted on this engine program!

The result of all this genius?  Final figures will not be announced until early 2013, but horsepower will be about 450 (20 more than on the current model, and the most ever on the standard Corvette).  Torque will be about 450 lb-ft.  Because of the lighter weight of the 2014 Corvette, 0-60 times are projected to be slightly under 4 seconds (the quickest ever for a so-called base Corvette!).  And, fuel economy will be better than the 2013 Corvette, exceeding 26 mpg!

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8 Responses to Corvette LT1 – Among Most Advanced V-8 Engines in World

  1. Have you any information regarding the spark plug gap on the Series 2 3800?

  2. William Eason, Jr. says:

    What is considered a light load for deactivating four of the cylinders in the C7?

  3. Bill Connell says:

    The press release describes it this way: Saving fuel can be as easy as shutting off engine cylinders when they aren’t needed. Active Fuel Management does exactly this by using sophisticated engine controls to deactivate four of the eight cylinders and reactivate them seamlessly on demand.
    Cylinder deactivation technology can improve fuel economy by up to 12 percent without sacrificing performance… The premise behind Active Fuel Management is simple: Most of the time, vehicle owners have more power than they need. Many consumers choose V-8 engines for driving performance or towing and hauling, yet during everyday driving, that powerful engine operates at a fraction of its capability. This reduces engine efficiency, which means less than optimal fuel economy.
    Active Fuel Management saves fuel by using only half of the engine’s cylinders during some driving situations – such as highway cruising — and then seamlessly reactivates the other cylinders when a driver demands more power for acceleration, climbing a grade or hauling.
    Under Active Fuel Mangement, when only a fraction of the available power is needed to keep
    the vehicle moving, the fuel delivery to four of the eight cylinders is switched off and a solenoid
    system collapses the valve lifters to reduce the pumping losses and improve fuel efficiency.
    Active Fuel Management technology is cost-effective for customers, too, because the only new
    components required are special valve lifters for the cylinders that are deactivated, a lifter oil
    manifold assembly and an advanced engine control module.
    With Active Fuel Management, Chevrolet owners do not have to sacrifice superior V-8
    performance to go farther on a tank of gas.

  4. Annie says:

    Thanks for sharing the info, keep up the good work going…. I really enjoyed exploring your site.I got good resource in this post. This is my first time I visit here. I found so many interesting things in your blog.

  5. 3800 engine provides power and good performance to car’s engine.

  6. Before I start pumping money into 3800 series 2 mods, what should I know?

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