Details on GM’s new efficient top-end 8-speed automatic
Green Car Congress
AUGUST 21, 2014
EcoTec3 V-8 (L86) ( earlier post ), and on the Cadillac Escalade and Escalade ESV. The resultant on-axis transmission architecture utilizes a squashed torque converter; an off-axis pump; and four close-coupled gearsets. In the 2015 Corvette Stingray, the new 8-speed enables a class-leading 29-mpg (8.1 axle ratio.
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