GM: new Sierra 5.3L V-8 EcoTec3 highway fuel economy tops Ford EcoBoost V-6
Green Car Congress
APRIL 1, 2013
V-8 EcoTec3 AFM VVT DI (L83) for Chevrolet Silverado and GMC Sierra. EcoTec3 V-8 engine ( earlier post ) equipped with direct injection, cylinder deactivation (AFM) and variable valve timing to achieve EPA estimates of 16 mpg city (14.7 l/100 km) with two-wheel drive or 16/22 mpg (14.7/10.7 EcoTec3 V-6 is standard.
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