at the beginning of the model year, all eagles carried over the new-for-1980 permanent all-wheel drive system with viscous fluid coupling that protected the suspension or driveline components from wear during dry pavement use. a "select drive" option, which allowed the eagle to run in two-wheel-drive (rwd) mode and be switched to four-wheel-drive via a dashboard switch, was offered as a fuel economy measure at midyear. select drive required the vehicle to be stationary when switching between two-wheel and four-wheel-drive.