09/17/2026
1970 Buick Riviera GS 455
This is what happened when American luxury met serious big-block power. The Riviera GS combined a long, elegant personal-luxury coupe with Buick’s massive 455 cubic-inch V8, rated at 370 gross horsepower and 510 lb-ft of torque.
Inside, it delivered the comfort and space expected from a Riviera. Underneath, the GS package added a more performance-focused character.
Elegant enough for the boulevard. Powerful enough to make a statement.