The 455-SD or "Super Duty" engine was one of the last high-performance muscle car era big-blocks GM offered. You'd find it in the '73 Pontiac Trans Am with a "shaker scoop" on top, peeking out through the hood.
1973 Pontiac Trans Am SD-455
The 455-SD or "Super Duty" engine was one of the last high-performance muscle car era big-blocks GM offered. You'd find it in the '73 Pontiac Trans Am with a "shaker scoop" on top, peeking out through the hood.
