General Motors’ chief engineer for transmissions Larry Nitz confirmed to Automotive News what was reported earlier this year: the new Corvette Z06’s 8L90 eight-speed automatic transmission will shift faster than the dual-clutch PDK transmission in the Porsche 911 Turbo S. An impressive feat that Nitz said is possible due to the use of “fast electronic solenoids and other controls.”
As mind-blowing as the 8L90’s lightning-quick shifts are, we’re equally impressed by the fact that the transmission weighs approximately eight pounds less than the six-speed automatic used in the 2014 Corvette Stingray. The 8L90 will replace the Stingray’s six-speed unit in 2015.
Chevrolet managed such weight savings by incorporating aluminum and magnesium into the transmission’s construction. By keeping weight down throughout the entire car, Chevrolet expects its new Z06 to be lighter than the 3,538-pound 911 Turbo S.