1973
First symbol indicates the division of General Motors.
Second symbol indicates the series:
Third and fourth symbols indicate body style.
Fifth symbol indicates type of engine.
Sixth symbol indicates model year.
Seventh symbol indicated the assembly plant.
1 2 3/4 5 6 7
3 = Oldsmobile
B = Omega
27 = 2dr coupe
17 = 2dr hatch
69 = 4dr sedan
F = Cutlass Hardtop
37 = 2dr coupe
G = Cutlass ‘S’
29 = 4dr sedan (sold as Cutlass)
37 = 2dr coupe
J = Cutlass Sumpreme
57 = 2dr coupe
29 = 4dr coupe
K = Vista Cruiser
35 = 4dr station wagon 5 seater
45 = 4dr station wagon 7 seater
L = Delta 88
57 = 2dr coupe
39 = 4dr hardtop
69 = 4dr sedan
N = Delta 88 Royale
57 = 2dr coupe
39 = 4dr hardtop
69 = 4dr sedan
67 = 2dr convertible
Q = Custom Cruiser
35 = 4dr station wagon 5 seater
45 = 4dr station wagon 7 seater
R = Custom Cruiser with woodgrain
35 = 4dr station wagon 5 seater
45 = 4dr station wagon 7 seater
T = 98
37 = 2dr coupe
39 = 4dr sedan
V = 98 luxury
37 = 2dr coupe
39 = 4dr sedan
X = 98 Regency
39 = 4dr sedan
Y = Tornado
57 = 2dr coupe
Z = Tornado Brougham
57 = 2dr coupe
H,K,M = 350ci V8
T,U,V,W = 455ci V8
3 = 1973
E = Linden, NJ
G = Framington, Boston
L = Van Nuys
M = Michigan (Lansing)
R = Texas (Arlington)
X = Kansas City
W = Willow Run
Remaining symbols vehicle production number
The starting number was 100001 at each plant.
Engines (there is no relationship to an assembly plant)
1973
250ci 6cyl 350ci V8
CC* 100nhp QN/QO/QP/QQ/QS/QT = 160nhp
QA/QB/QJ/QK/QU/QV/QC/QD/QE/QL = 180nhp
455ci V8
U* = 225nhp
T = 250nhp
W = 270nhp