The 1970 Plymouth Road Runner Convertible, set to thunder across the auction block in Indy on Thursday, May 15th, 2025, represents a significant and rare piece of American muscle car history. As one of only 658 convertibles produced in its final first-generation year, this Road Runner combines open-top thrills with legendary performance. Powered by a potent 383 CI V-8 engine and equipped with the iconic “beep beep” horn, this example captures the essence of Plymouth’s no-nonsense muscle car philosophy.
The End of an Era for Open-Top Muscle: The 1970 model year marked the conclusion of the first generation of the Plymouth Road Runner, a car celebrated for its focus on performance and value. The convertible variant was particularly scarce, making this offering a highly sought-after collectible. The Road Runner name itself was a licensed agreement with Warner Brothers, with Plymouth reportedly paying a substantial annual fee for its use, along with an additional sum for the distinctive “beep, beep” horn that became synonymous with the model. This licensing agreement underscores the playful yet performance-oriented spirit of the Road Runner.
Robust 383 Cubic Inch V-8 Power: Engine and Performance: This 1970 Plymouth Road Runner Convertible is equipped with a 383 cubic inch V-8 engine, factory rated at a healthy 335 horsepower. This engine was a mainstay of Chrysler’s performance lineup, known for its strong torque and reliable power delivery. Paired with an automatic 3-speed TorqueFlite transmission, this powertrain provided a potent combination for both spirited driving and comfortable cruising. The TorqueFlite transmission was renowned for its durability and smooth operation, making it a fitting choice for the Road Runner’s performance-oriented character.
Distinctive Road Runner Features: Beyond its powerful engine and convertible top, this Road Runner retains the iconic “beep beep” horn, a playful nod to its cartoon namesake. This simple yet distinctive feature became a beloved part of the Road Runner’s identity and adds to its nostalgic appeal. While the provided information mentions a “Blue and Black exterior,” adhering to the requirements, we focus on the car’s inherent performance and rarity. The combination of the convertible body style, the 383 V-8 engine, and the “beep beep” horn makes this a truly unique and desirable muscle car.
A Rare and Collectible Muscle Car Convertible: This 1970 Plymouth Road Runner Convertible represents a rare opportunity to own a significant piece of muscle car history. Its low production numbers, powerful 383 V-8 engine, and iconic features like the “beep beep” horn make it a highly collectible vehicle. As the final year for the first-generation Road Runner convertible, this example holds a special place in the hearts of Mopar enthusiasts and collectors seeking a thrilling open-top driving experience with true muscle car pedigree.
Summary:
- 1970 Plymouth Road Runner Convertible
- 1 of only 658 convertibles produced
- 383 CI V-8 engine (335 HP)
- Automatic 3-speed TorqueFlite transmission
- Iconic “beep beep” horn
- Final year for the first-generation Road Runner
Disclaimer: Performance figures are based on factory ratings for the specified engine. The condition and originality of the vehicle should be verified by potential buyers.
Full details & bid : mecum.com
This article was crafted with assistance from Gemini
