The mid-1970s saw some changes that made this era challenging for muscle car manufacturers. The U.S. government — in its bid to control air pollution and improve fuel efficiency — rewrote the ...

Although it lacked the performance prowess of a true SS-badged Chevy, the 1983-1987 Choo Choo Customs-converted El Camino SS remains a fascinating enthusiast's car that deserves to be rediscovered.

During its short lifespan, the G platform was used to underpin some interesting GM rides that helped spark a muscle car resurgence in an era when performance was not a main focus for US carmakers.