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JH and JS E-body VINs
1970–1974 Dodge Challenger VIN Decoder
The E-body Challenger has a strong pre-standard VIN structure. JH identifies the base/high-line family while JS identifies performance-oriented series; body, engine, year, plant and sequence follow in fixed positions.
Decoder coverage: 1970–1974
1970–1974 Challenger JH/JS series Engine/body/year/plant
Decoder reference
What this decoder page is designed to answer.
JH and JS establish the Challenger family
PetrolJunky validates those prefixes only for the years where they belong and then reads body codes such as hardtop and convertible before decoding the fifth-character engine.
1970–1971 performance engines are particularly informative
Year-aware mappings can distinguish 340, 383, 426 Hemi, 440 four-barrel and 440 Six-Pack families where offered. Later years reuse some letters for different engines, which is why the decoder never maps an engine without the year context.
R/T labeling is limited to supported series years
JS is treated as R/T for 1970–1971 and more generically as a performance-series Challenger afterward, preventing a later JS VIN from receiving an historically inappropriate R/T claim.
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