We love the 2014 Chevrolet Corvette C7, as evidenced by awarding it our 2014 Automobile of the Year accolade. The car is a huge improvement over the already good C6, and an incredible value in the world of performance cars. But some were slightly disappointed at the carryover six-speed automatic, even as the manual transmission got an upgrade to a seven-speed. Even without the benefit of extra ratios over its predecessor, the C7 Corvette still saw an improvement of 1 mpg city and 3 mpg highway for the automatic model.
But if you wondered how much better the C7’s fuel economy could be if it had a more modern transmission with more ratios, you may not have to wait much longer. In a technical paper summary previewed by the Society of Automotive Engineers, details on the 2015 Chevrolet Corvette’s eight-speed automatic transmission are previewed. How sure are we this transmission is for the 2015 Corvette? Because it says so right in the summary of the paper.
What other technical tidbits are revealed? A torque capacity of 1000 newton-meters (738 lb-ft) of torque, and an overall ratio spread of 7.0. With more ratios, the transmission, dubbed 8L90, promises quicker off-the-line acceleration with a shorter first gear ratio enabled by the extra two cogs, as well as better highway fuel economy thanks to the greater ratio spread. The 8L90 could put the C7 automatic over the 30 mpg highway mark, an incredible accomplishment for a 455-hp 6.2-liter V-8. The full paper will be available for purchase in April 2014.