What transmission is in the 1984 Corvette?

Answer 1

The first 1984 Corvettes were equipped only with an automatic. Returning from 1982, but now as a no-cost option, was the GM 700-R4 four-speed overdrive automatic with a lockup torque converter clutch effective in all forward ratios except for first. Production delays postponed deliveries of the manual transmission until early calendar '84. Also offered as a no-cost option was a "4+3" 4-speed manual transmission built by the Doug Nash Company. The transmission had overdrives in the top three gears for improved fuel economy. However, testers noted little difference between the manual and the automatic transmission. When signaled by the engine's Computer Command Control electronics, the auxiliary gearset engaged through a hydraulic clutch to provide a stepdown or overdrive reduction of 0.67:1 in each of the top three gears. For best performance, engagement was electronically inhibited at wide throttle openings, but this was quickly supplemented by a console-mounted manual override switch. Standard final drive was 3.07:1, with 3.31:1 gearing available for better standing-start performance.