what camaro is bumblebee in transformers 1

In the first Transformers movie, Bumblebee is a 1977 second-generation Camaro that eventually converts into a fifth-generation Camaro. However, the car used in the movie was not a production model, but rather a one-off running concept built by Chevrolet specifically for the film. The car was based on the Camaro concept and largely previewed the production car launched for 2010.