The ultimate muscle car, the 1970 Chevelle 454 was in one word, barbaric. Known as the Big Dog on the streets, in its heyday the Chevelle 454 laid waste to lesser muscle cars. And even now, 50 years later, folks are still ranking it top of the list. The only GM car to top the horsepower rating of the Corvette, the 454 was the highest powered Chevelle ever manufactured in the model’s lifetime.