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New GM EcoTec3 engine family for 2014 Silverado and Sierra pickups; direct injection, cylinder deactivation and CVVT

Green Car Congress

DECEMBER 13, 2012

SAE-certified horsepower and torque ratings and EPA fuel economy estimates for the new Silverado and Sierra will be available beginning early next year. To further enhance combustion, the intake and exhaust valve positions have been switched from previous versions, and the valves are now slightly canted toward the cylinder centerline.

Sierra 218
Sierra Silverado 2014 Engine 218
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New 450hp Small Block V8 for 2014 Corvette features direct injection, cylinder deactivation, continuously variable valve timing

Green Car Congress

OCTOBER 24, 2012

It will also deliver the most fuel-efficient Corvette ever, exceeding an EPA-estimated 26 mpg US (9.0 This is complemented by a reversal of the intake and exhaust valve positions, as compared to the previous engine design. The rocker covers also hold the direct-mount ignition coils for the coil-near-plug ignition system.

2014 362
2014 Oil Exhaust Engine 362
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