19. Pontiac GTO
Continuing on the same platform, the 1971 GTO received a modest facelift with a different grille and headlights. However, the end was in sight for all muscle cars, including the GTO. So, in 1971 all their engines received a downgrade in compression ratings and horsepower. Although the 400 was again the base model, they rated it at 255 HP, while the 455 as an optional engine delivered 260 HP.
But, the top of the line engine option was the 455 High Output that delivered 310 HP. It retained the performance level that GTO owners were accustomed to. Unfortunately, as the muscle car segment started to decline, so did the GTO sales.
In fact, in 1971, Pontiac managed to move just over 10,000 cars, which was low compared to just a few years prior. Soon, they would reduce the GTO as an option on the Ventura economy model just two years later.