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Barracuda, Road Runner and GTX VINs
Classic Plymouth Muscle VIN Decoder & Registry
Plymouth’s muscle-era VIN contains model/series prefix, body, engine, model year, plant and production sequence. PetrolJunky uses those positions to identify the car while explicitly separating VIN facts from packages that require a fender tag or broadcast sheet.
Decoder coverage: 1968–1974
1968–1974 Road Runner 1968–1971 GTX 1968–1974 Barracuda/Cuda Year-specific engine codes
Model VIN decoder guides
Explore the models we can decode.
1968–1974
1968–1974 Plymouth Barracuda & Cuda VIN Decoder
Decode late A-body and E-body Plymouth Barracuda/Cuda VINs for model series, body, engine, year, assembly plant and sequence.
Open decoder guide → 1968–19741968–1974 Plymouth Road Runner VIN Decoder
Decode classic Plymouth Road Runner RM-series VINs for body, original engine family, model year, assembly plant and sequence.
Open decoder guide → 1968–19711968–1971 Plymouth GTX VIN Decoder
Decode classic Plymouth GTX RS-series VINs for body, engine, model year, plant and production sequence.
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Decoder reference
What this decoder page is designed to answer.
B-body and E-body cars use recognizable prefix families
RM identifies Road Runner, RS the GTX in supported years, and BH/BP/BS cover Barracuda and Cuda families as the model moves from A-body to E-body. PetrolJunky validates the prefix against year rather than applying one timeless definition.
Engine letters are decoded in year context
Codes for 340, 383, Hemi and 440 engines changed across 1968–1974. The decoder therefore combines the VIN year with the engine character before reporting displacement and family.
Superbird authenticity is deliberately not inferred
A Superbird originates from the Road Runner VIN family, and the VIN alone is not enough to authenticate the aerodynamic conversion. PetrolJunky returns Road Runner and leaves Superbird provenance to the fender tag, body numbers and documents.
VIN Registry
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Decoder facts stay tied to the exact VIN or chassis number while owners decide what history and photographs to share publicly.
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