chevy corvette stingray lt1 v8 engineWith improvements in performance and efficiency, Chevy’s LT1 engine is the most powerful and economic engine ever put into a mass production vehicle. The new Corvette Stingray C7 has been out for a while now and the details on the new ultra-powerful LT1 engine show that this old V-8 engine design is actually one of the most high-tech and powerful engines ever put into a production car. The LT1 engine packs some serious power with over 450 horsepower and the ability top run from 0-60 MPH in under 4 seconds. But it’s not just about power though as Chevy has updated the LT1 with modern technology like gasoline direct injection, cylinder deactivation and variable valve timing for better fuel economy. In fact the Stingray can net 29 MPG on the highway.

Die hard Corvette drivers and fans wondered if the new C7 Corvette would feature a small block V-8 like it has for the past 60 years or a twin-turbocharged V-6 engine. Well the faithful Corvette fans won out and the C7 got its V-8 muscle. With an internal code of LT1, the new engine is the most powerful standard engine ever installed in a Corvette. The cylinder banks are arranged in the 90-degree structure and the bore is 87 mm. The highest speed is Chevrolet at 6,600 revolutions per minute. Horsepower is rated at 455 and the maximum torque is 465 lb-ft. Remarkable values. Instead of a turbocharger, the new Corvette engine relies on a high compression ratio of 11.5:1. The architecture with the central camshaft hidden deep in the engine block, may seem archaic. With overhead camshafts, the engine would have been around ten centimeters higher and this would have changed not only the center of gravity but also the classic Corvette silhouette.

This new LT1 engine generation also features a ton of aluminum integration. The cylinder head and engine block are from the light metal. The pistons are completely hollow to allow the direct injection. The fuel pump is now driven by the camshaft. The camshaft now allows variable shutter speeds, the intake and exhaust valves, the engine will still be done via pushrods.

For the first time there will also be a cylinder deactivation in a Corvette: At low load four of eight pots are paralyzed. The combustion chambers are smaller than previously, to optimize the combustion of the direct injection. To optimize the supply of oil even at low speeds, the oil pump is designed more efficiently. The rocker box covers have a patent pending design that will reduce oil consumption and extend the life of the lubricant.

The achieved performance and efficiency improvement based on a high analytical effort. This included a computer-calculated fluid dynamics to optimize the combustion process, gasoline direct injection, fuel management and variable valve timing. A total of over 10 million CPU hours computer came along, one of which was attributable to the combustion process alone six million hours. Direct fuel injection is a completely new element in the small-block architecture and by precise control of mixture motion, injection cycles and combustion process, the primary factor for the increase in efficiency. Another fuel-saving effect causes the cylinder shut-off used in the Chevrolet Corvette “AFM” (Active Fuel Management), which at low engine load four of the eight cylinders – unnoticed by the driver

The basic architecture of the Corvette, there is also little that is new: it is the tried and true concept: front engine, rear drive and transmission. The transaxle design is also a rejection of the mid-engine concept: While you would have the motor then larger and can make the front racier, but wanted the U.S. sports car traditionalists then not. The four exhaust pipes are placed centrally at the rear, helping to create a striking degree.

The C7 Corvette Stingray and its LT1 engine are the stuff that American sports car legend is made from. This model is the fastest and most efficient production Corvette of all time.