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Plymouth Muscle Cars 1955–1990
Every Plymouth muscle car 1955–1990 — model lineup, engine specs, production numbers, values and restoration guides.
Plymouth delivered the most performance per dollar of the era with the Road Runner, GTX, Superbird and Barracuda. The 1970-71 Hemi and 440 Six Barrel 'Cuda are among the most valuable American cars ever built, while B-body Road Runners remain a comparatively attainable way into big-block Mopar ownership.
Plymouth models covered in detail here include 1970–1974 'Cuda. Every entry lists factory engine options, power and torque ratings, production numbers, original MSRP and current 2026 collector values, together with the specific rust areas and mechanical faults to inspect before buying.
Models, Specs and 2026 Values
- 1970–1974 Plymouth 'Cuda — 340ci / 383ci / 440ci / 426ci Hemi V8, 275–425 hp. Current value $55,000–$90,000 (340/383); $150,000–$400,000 (440 Six Pack); $1,500,000–$4,000,000+ (Hemi convertible).
Frequently Asked Questions
Which Plymouth muscle car is the most valuable?
Among the Plymouth models covered here, the highest current values belong to the rarest documented engine and option combinations. Individual 2026 value ranges are listed on each model page, and originality with supporting paperwork is the single biggest price factor.
How much does a classic Plymouth muscle car cost in 2026?
Plymouth values in 2026 span from affordable driver-quality cars in the low tens of thousands to six-figure documented rare-engine examples. Each model page on this site lists a current value range along with original MSRP for comparison.
Are parts still available for classic Plymouth muscle cars?
Reproduction sheet metal, trim and mechanical parts are widely available for the most popular Plymouth models, while low-production models rely more on used original parts. Our restoration guides cover which suppliers are reliable and where reproduction quality varies.