Pontiac Grand Prix SJ 455
The Pontiac Grand Prix was John DeLorean's vision of a personal luxury car that could also deliver performance. The third generation (1969-1972) featured dramatic long-hood, short-deck proportions with a massive loop bumper grille that became a Pontiac signature. The SJ package added the 455 V8, performance suspension, and Rally II wheels. Built on GM's A-body platform, the Grand Prix was lighter than competitors like the Thunderbird and Riviera, giving it genuine sporting credentials. The interiors featured aircraft-inspired instrument clusters and luxurious appointments. Over 112,000 were sold in 1969 alone, making it a massive commercial success.
SJ models with 455 engines are the most collectible. Rally II wheels and 8-track player are desirable options. Check for A-body rust in the usual places. The long hood makes engine access easy. These are undervalued compared to GTO and Firebird — a potential bargain muscle car.
The third-gen Grand Prix launched in 1969 with revolutionary styling by Bill Mitchell's team. The SJ (Super Job) was the performance variant. Available with 350, 400, and 455 engines. The 455 HO was the ultimate option.