EcoTec3 4.3-Liter V-6 Engine Editorial Photo

A high quality picture of EcoTec3 4.3-Liter V-6 Engine from the 2013 New York International Auto Show. The 2014 Chevrolet Silverado 1500 and GMC Sierra 1500 will deliver more power, more torque and improved fuel efficiency, thanks in part to a trio of all-new EcoTec3 engines designed specifically for the needs of full-size truck customers. The new engine family includes a 4.3L V6, a 5.3L V-8 and a 6.2L V-8. EcoTec3 engines feature three state-of-the-art technologies – direct injection, cylinder deactivation and continuously variable valve timing – to optimize power, torque and efficiency across a broad range of operating conditions. The new 4.3L V-6 is engineered for more horsepower, more torque and better fuel economy than the current 4.3L V-6. At the heart of the new EcoTec3 engine family is an advanced combustion system that maximizes the potential of the direct fuel injection system, cylinder deactivation, continuously variable valve timing and other technologies. Development of this advanced combustion system involved extensive design and engineering by GM’s global powertrain organization. More than 100 iterations of the combustion systems were evaluated through computer modeling before a final design was selected for each engine variant. The overall engine design involved more than 10 million hours of computational CPU time, with the combustion process alone using more than 6 million of those CPU hours.