: The first gear ratio is exceptionally high (often around 6.5:1 or 7.0:1), providing immense torque for starting heavy loads or crawling over obstacles.
: In daily driving, these are typically operated as three-speed transmissions. Drivers start in second gear because the "granny gear" is too low for normal acceleration and often requires the vehicle to be nearly stopped to engage. granny trannies
: Historically used as slang for small, low-fidelity transistor radios used to test how a studio mix might sound on a "cheap" home device. : The first gear ratio is exceptionally high (often around 6
These transmissions were staples in 20th-century pickup trucks and are now highly sought after for off-road Jeep conversions: Muncie SM420 granny trannies