The second generation Pontiac Firebird was scheduled for debut for the 1970 model year, but it was delayed until February 1970 because of tooling and engineering problems; thus, its popular designation as a 1970½ model, while leftover 1969s were listed in early Pontiac literature without a model-year identification. This generation of Firebirds were available in coupe form only; after the 1969 model year, convertibles were not available until 1989. Power was provided by a raft of different engines, some of the most notable were the 350ci, 400ci, 403ci, 455ci, and even a 301ci Turbocharged V8. The most notable variant was the Trans Am.