Top 20 Muscle Cars of All Time

5. 1970 Plymouth Superbird 426 Hemi

The 1970 Plymouth Superbird 426 Hemi was only available for one year. The Superbird was a highly modified variant of the Road Runner. The car is known for its aerodynamic nose cone and huge rear wing. The Road Runner cartoon character holding a helmet is featured on decals around the car. Only 135 Superbirds were equipped with the 426 Hemi engine. This engine produced 425 horsepower and could accelerate from zero to sixty in 5.5 seconds. The Superbird was developed specifically for NASCAR racing and was Plymouth’s follow-on design to the Charger Daytona built by sister company Dodge. In order to be accepted into racing, NASCAR rules stated that a vehicle must be sold to the public through dealerships in specific numbers. This lead to Plymouth building 1,920 Superbirds.