The body number is found on a tag mounted on the engine side
of the firewall, near the passenger side hood hinge. The first three
digits indicate the model/body style, followed by the sequential body
serial number.
*Unfortunately body numbers for 1957 Plymouths are not documented*
Vehicle Identification Numbers
The VIN# is stamped on a plate located on the left, front door post.
The serial number sequences indicates the series/model and assembly
plant information according to the following number sequences:
*starting serial numbers only available*
6-cyl Plaza P30-1
6-cyl Savoy P30-2
6-cyl Belvedere P30-3
V-8 Plaza P31-1
V-8 Savoy P31-2
V-8 Belvedere P31-3
6-cyl Plaza P30-1
6-cyl Savoy P30-2
6-cyl Belvedere P30-3
V-8 Plaza P31-1
V-8 Savoy P31-2
V-8 Belvedere P31-3
Detroit
Evansville
Los Angeles
Detroit
Evansville
LosAngeles
Windsor
Windsor
Windsor
Windsor
Windsor
Windsor
14280001
20860001
25215001
16083001
22330001
26595001
95545301
96123501
95999101
95569801
96188701
96921601
Production Figures
Plaza
Business Coupe
4d Sedan
2d Sedan
Savoy
2d Sedan
4d Sedan
Sport Coupe Hardtop
Sport Sedan Hardtop
Belvedere
2d Sedan
4d Sedan
Sport Coupe Hardtop
Sport Sedan Hardtop
Convertible Coupe
Suburban
Deluxe 2d
Custom 2d
Custom 4d, 6P
Custom 4d, 9P
Sport 4d, 6P
Sport 4d, 9P
Fury
2,874
70,248
49,137
55,590
153,093
31,373
7,601
55,590
110,414
67,268
37,446
9,866
20,111
11,196
40,227
9,357
15,414
7,988
7,438
Model & Body StyleProduction
Engine Numbers
Plymouth 6-cylinder engines were stamped on the cylinder block's left front corner with an engineering code matching the model year of the car followed by a sequential build number. Additional letters stamped before or after the model code and serial number indicated factory use of over- or under-size engine components. The letter codes are as follows:
The letter "C" immediately following the model designation (i.e. P20C) indicates a Canadian-built "long block" engine (found on Canadian built cars only). V-8 serial numbers are located on a pad between the #2 and #3 cylinders. Engine numbers were also stamped on the left rear corner of the car's chassis.
Engine Numbers for 1957 Plymouths
6-cylinder buyers received a 230ci, 132hp engine with a 1bl carburetor. Its engineering code was P30. 6-cylinder engine numbers ran P30-1001 to P30-177184.
V-8 buyers had several choices. Smallest of the V-8s was a 277ci, 197hp engine with a 2bl carb. Next in line was a 301ci 215hp engine with 2bl. With a 4bl carb, this same 301ci pumped out 235hp. Fury buyers got a 318ci, 290hp engine.
V-8 numbers ran P31-1001 to P31-492995. Fury engine serial numbers were prefixed with the letters FP31.
P31 identified 301ci engines, LP31 277ci engines.
A= 0.020 oversize cylinder bore
B= 0.010 undersize main and connecting rod bearings
