Muscle Cars: 1970 – 1974 Dodge Challenger Vin Decoder – Road Test TV

November 26th, 2010 by Road Test TV


1970 Hemi Challenger

1970 – 1974 Dodge Challenger Vin Decoder Data

First digit = Car line

For a Challenger this is the letter “J

Second digit = The price class.

This is the price class. The 1970-71 Challenger R/T and 1972 Rallye have the letter “S” (for Special). All others (including the 1973-4 Rallye) have the letter “H” (for High). The Challenger is reported to have been “L” (for Low) but examples seen seem to have the “H” instead.

Third and fourth digits = Body type.

23 = Two door hardtop
27 = Convertible
29 = Special Edition car (with the small rear window)
Again there is some confusion as to the Challenger Deputy. The 1971 ordering guide lists it as JL21 but they are known to be stamped JH23.

Fifth digit – Engine code:

70 Hemi Challenger – R Code in 5th digit

B = 198 ci (1970-71 only)
C = 225 ci (1970-72 only)
G = 318 ci (All years)
H = 340 ci (1970-73 only)
J = 340 ci six pack (1970 only)
L = 360 ci (1974 only)
L = 383 ci (1970-71 only)
N = 383 ci High power (1970-71 only)
R = 426 ci Hemi (1970-71 only)
U = 440 ci (1970 only)
V = 440 ci six pack (1970-71 only)

Sixth digit – Model Year

This is the last digit of the model year (Not the year of manufacture)

0 = 1970, 

1 = 1971,

2 = 1972,

3 = 1973,

4 = 1974

Seventh digit – Assembly Plant Code

This is the assembly plant code. Challengers were built at two plants in the U.S.
B = Dodge Main, Hamtramck, MI (all models)
E = Los Angeles, CA (no hemi cars or convertibles)

Hamtramck had two production lines. The R/T cars seem to have been built on line #2.

The last six digits – Plant Sequence number

Starts with the number 100001.

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