There's no single answer to how much a Chevy cost in 1983. Chevrolet offered a wide range of vehicles, from economical subcompacts like the Chevette to full-size trucks and luxury models like the Caprice. The price varied drastically depending on the model, trim level, and options selected.
To get a more precise answer, you'd need to specify the *exact* Chevrolet model (e.g., Chevy Chevette, Chevy Camaro, Chevy Silverado, Chevy Caprice) and its options.