GR Auto Gallery is pleased to present this 1975 Pontiac Trans-Am for purchase. The Firebird and Chevy Camaro hit the showroom floors as a response to the success of the Mustang. GM muscle enthusiasts were immediately smitten and the 2nd generation of the Firebird, running from 1970-1981, is at the top of the list to many when it comes to muscle car history. The 455 engine available in the second generation Firebird Trans Am was arguably the last high-performance engine of the original muscle car generation. The 455 cu in (7.5 L) engine made its first appearance in the Firebird in 1971 as the 455-HO, which continued in dofferent forms through the 1976 model year.