The 1974 Pontiac Firebird Trans Am Super Duty is a highly sought-after '70s muscle car due to its on-screen popularity and rare engine option. The 1974 Trans Am Super Duty 455 is valued at over $ ...

We're watching these muscle cars slug it out on the drag strip with a side-by-side battle between a '74 Pontiac Trans Am ...

The Pontiac Firebird ... popular Trans Am, with 4,664 units produced. The standard 455 was also popular, with 4,648, while only 943 customers opted for the high-performance Super Duty 455.