-
1975 Buick Gran Sport
To connect this 1975 model to the fire-breathing 1970 GSX and other muscle cars, Buick introduced the Gran Sport car they based on their Century lineup. Unfortunately, gone was the powerful 455 big block, so car buyers were only left with a 350 V8 delivering 175 HP. It goes without saying the 1975 Grand Sport was an extremely slow muscle car because it weighed almost two tons.