Previous engine block design choices were high strength or compact or lightweight. (greencarcongress.com)
Although the EcoTec3 engines for the 2014 Silverado and Sierra are all new — sharing just a handful of small parts with previous engines — they build on a foundation of more than 100 million Small Block engines and billions of real - world customer miles. (greencarcongress.com)
The domed sections of the covers contain baffles that separate oil and air from the crankcase gases, with about three times the oil / air separation capability of previous engines. (greencarcongress.com)