1957 Chevy Big Truck VIN Decoder 2018-10-25T19:00:27+00:00

1957 VIN – Model – Series Identification

RPO = Regular Production Options

Serial Numbers locations

*ENGINE**TRANSMISSION*
V8 Numbers = Top of Right Hand Bank at the front.
6 Cylinder Numbers = On boss at the rear of the distributor
3-speed conventional, overdrive and 4-speed = rear face.
3-speed Heavy Duty = left side at rear.
5-speed = right side rear bottom.
Automatic = left side at rear.

*REAR END**VEHICLE*

Series 3100 = front face.
All Other = top.
 
Forward Control = left hand side on steering column.
Flat Face Cowl = front face of cowl top panel.
All Other = body hinge pillar.

Vehicle Serial Numbers

Example: 3B57F 103456
3B = Series*, 57 = Year, F = Assembly Plant,
103456 = Unit Number beginning with 100001 at each plant regardless of Series.
* = The letter “V” prefix to the Series designation will identify models equipped with optional V-8 engine.

 

SeriesDesignationTon   SeriesWheel Base (in)Model Type
3A1/23100114Flat Face Cowl Chassis, Cab Chassis%, Pickup%, Panel%, Suburban%, W/S Cowl Chassis & Cameo.
3B1/23200123.2Cab Chassis%, Pickup
3C1/23400104Forward Control
3D3/43500125Forward Control
3E3/43600123.2Flat Face Cowl Chassis, Cab Chassis%, Pickup%, Stake% & W/S Cowl Chassis
3F13700137Forward Control
3G13800135Flat Face Cowl Chassis, Cab Chassis%, Pickup%, Panel%,  Stake% & W/S Cowl Chassis
4A1-1/24100132.5Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
4B1-1/24400156.5Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
4C1-1/24500156.5School Bus Chassis
5A25100112.6Cab Chassis
5B25400136.6Cab Chassis & Stake
5C25700160.6Cab Chassis
5D1-1/2HD5100S112.6Cab Chassis
5E1-1/2HD5400S136.6Cab Chassis & Stake
5F1-1/2HD5700S160.6Cab Chassis
5G2HD5100H112.6Cab Chassis
5H2HD5400H136.6Cab Chassis & Stake
5J2HD5700H160.6Cab Chassis
6A26100132.5Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
6B26400156.5Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
6C26500174.5Flat Face Cowl Chassis, Cab Chassis & W/S Cowl Chassis
6D26702196.5School Bus Chassis
6E26800222.5School Bus Chassis
6F1-1/2HD6100S132.5Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
6G1-1/2HD6400S156.5Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
6H1-1/2HD6500S174.5Flat Face Cowl Chassis, Cab Chassis & W/S Cowl Chassis
6J26200129.6Forward Control
6K26200153.6Forward Control
6L2HD6100H132.5Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
6M2HD6400H156.5Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
6N2HD6500H174.5Flat Face Cowl Chassis, Cab Chassis & W/S Cowl Chassis
7A2-1/27100112Cab Chassis & Stake
7B2-1/27200124Cab Chassis
7C2-1/27700172Cab Chassis
8A2-1/28100132.5Cab Chassis & Stake
8B2-1/28200144.5Cab Chassis
8C2-1/28400 @154.5Cab Chassis & Stake
8D2-1/28500 @174.5Cab Chassis
8E2-1/28700 @192.5Cab Chassis
8F2-1/28800240School Bus Chassis
9A2-1/29100112Cab Chassis
9B2-1/29200124Cab Chassis
9C2-1/29700172Cab Chassis
10A2-1/210100132.5Cab Chassis
10B2-1/210200144.5Cab Chassis
10C2-1/210400 @156.5Cab Chassis
10D2-1/210500 @174.5Cab Chassis
10E2-1/210700 @192.5Cab Chassis
10F2-1/210800240School Bus Chassis
	NOTE: Starting in 1957 ALL Series 4000 and 6000 model wheelbases are lengthened by 2-1/2 inches to provide
	for the use of larger size tires without causing interference between the wheel and the toe pan on extreme 
	turns.    This wheelbase change is accomplished by moving the front axle forward on the springs, shortening
	the front overhang.  Front fenders with wider wheel openings were also used.
	(S) = "Special" Model also available in this series.
	(H) = "Heavy Duty" Model also available in this series.
	% = Optional Four Wheel Drive Equipment is available on these models; see RPO 690.
	@ = Optional Tandem Axle Equipment is available on these models; 
	for 8000 Series see RPO 682; for 10000 Series see RPO 467.
	Series 3000 = Light Duty
	Series 4000 & 5000 = Medium Duty
	Series 6000 = Special Medium Duty
	Series 7000, 8000, 9000 & 10000 = Heavy Duty
	ASSEMBLY PLANTS:
	A = Atlanta
	B = Baltimore
	F = Flint
	J = Janesville
	K = Kansas City
	L = Los Angeles
	N = Norwood
	O = Oakland
	S = St. Louis
	T = Tarrytown
	W = Willow Run

Rear Axle Identification (Chevrolet)
 Example:  AF 2 12
AF = Type, series and assembly Plant designation.
2 = Month.
12 = Day of month

Axle numbers are stamped on the front or top of the Carrier.

Capacity (lbs)TypeRatioSeries
3300AF3.90:131 and 32 Regular Production
3300AG4.11:131 and 32 with RPO 315
3300AR4.11:13100 with RPO 690
5000CA5.14:134-35-3700 Regular Production
5000CB5.14:134-35-37-3800 with RPO’s 299-462
5000CC4.57:13600 Regular Production with RPO’s 314-316-318
5000CD4.57:13600 with RPO 285
5000CP4.57:13600 with RPO 690
5000CE5.14:134-35-3700 with RPO’s 316-318-321
7200CF5.14:13800 Regular Production, 34-35-3700 RPO 205
7200CQ5.14:13800 with RPO 690
11000CG6.17:14000 Regular Production
11000CW6.40/8.7141-4400 with RPO 243
11000CN6.40/8.714500 with RPO 243
11000CH6.17:150-60-70-8000 (except 8800) RPO 251
15000CM7.20:150-60-70-80-10800
15000CL6.40/8.7150-60-70-80 (except 62-6600) RPO 201 & 415
30000DA7.20:180-10000 with Tandem Equipment RPO 682 & 476 (rear)
30000DB7.20:180-10000 with Tandem Equipment RPO 682 & 476 (aux. rear)

Rear Axle Identification (Eaton)
Specification Number is stamped on the Housing Arm.
Ratio and Serial Numbers are stamped on the Carrier

Capacity (lbs)Spec NumbersRatiosSeries
16000S-97017.17:15000-61-64-6500
16000S-97026.50/9.04:15000-61-64-6500
16000S-94607.17:17-8-9-10000
16000S-94616.50/9.04:17-8-9-10000
16000S-96037.17:19-10000  10 Bolt
18000S-96056.50/8.87:19-10000 10 Bolt
18000S-97267.17:19-10000 Full Air
18000S-97276.50/8.87:19-10000 Full Air

Front Axle Identification (Eaton)

Capacity (lbs)I-Beam Height (average)SpecSeries
45002.51S-97285000  
S-97036200-6600
70003.25S-9095B7000-9000.
70003.25S-90598000-10000
S-94629000 10 bolt hub
S-97259000 (Full Air)
S-9463A10000 (10 Bolt)
S-972410000 (Full Air)
90003.75S-9705Tandem (HD Option)
 	Note:  Eaton Spec Numbers are stamped on the bottom LH side, the Serial Number is 
 	stamped on the bottom RH side of the I-beam.

Engine Serial Numbers (Loadmaster Excluded)
Example:  F 101 H
F = Flint; T = Tonawanda.
1 = Year.
01 = Day of the Month.
H = Type and Series designation.

	Note: Engine Serial Numbers were discontinued.
TypeSeriesDescription
H31-32-36-3800Thriftmaster 235 with 3-speed (regular production)
HD31-32-36-38-4000Thriftmaster 235 with Hydramatic
HE31-32-36-38-4000Thriftmaster 235 with HD clutch
L31-32-36-38-4000Trademaster 265
LA31-32-36-38-4000Trademaster 265 with Hydramatic
LB31-32-36-38-4000Trademaster 265 with HD Clutch
J34-35-3700Thriftmaster 235 (regular production)
JA34-35-3700Thriftmaster 235 with Hydramatic
M34-35-3700Trademaster 265
N5000Taskmaster 283
NA5000Taskmaster 283 with Powermatic
NC5000Taskmaster 283 with 4BC
ND5000Taskmaster 283 with 4BC and Powermatic
K6000Jobmaster 261
KC6000Jobmaster 261 with Powermatic
P6000Taskmaster 283
PA6000Taskmaster 283 with Powermatic
PC6000Taskmaster 283 with 4BC
PD6000Taskmaster 283 with 4BC and Powermatic
R7000Taskmaster 283
RA7000Taskmaster 283 with Powermatic
RD7000Taskmaster 283 with AOHB
RE7000Taskmaster 283 with Powermatic and AOHB
RF7000Taskmaster 283 with 4BC
RG7000Taskmaster 283 with 4BC and Powermatic
RH7000Taskmaster 283 with 4BC and Powermatic and AOHB
RJ7000Taskmaster 283 with 4BC and AOHB
S8000Taskmaster 283
SC8000Taskmaster 283 with Powermatic
SD8000Taskmaster 283 with AOHB
SE8000Taskmaster 283 with Powermatic and AOHB
SF8000Taskmaster 283 with 4BC
SG8000Taskmaster 283 with 4BC and Powermatic
SH8000Taskmaster 283 with 4BC and Powermatic and AOHB
SJ8000Taskmaster 283 with 4BC and AOHB

AOHB = Air Over Hydraulic Brakes

Loadmaster Engine Serial Numbers (322 cu. in. V8, Buick)
Example:  CS2 – 001234
CS2 = Source and Designation.
001234 = Unit Number starting with 001001.

CS29-10000Loadmaster 322 V8
CA29-10000Loadmaster 322 V8 with Powermatic
CS49-10000Loadmaster 322 V8 with 4BC
CA49-10000Loadmaster 322 V8 with 4BC and Powermatic

Transmission Identification

Three Speed Conventional and Overdrive
Example: M 2 28
M = Muncie; S = Saginaw
2 = Month
28 = Day of Month

Four Speed Syncro-Mesh
Example: T 2 28
T = Toledo
2 = Month
28 = Day of Month

 

Four Speed Automatic (Hydramatic)
Series 31-3200 = Orange Plate Color.
Series 34-35-36-38-4000 = Black Plate Color

Three Speed Heavy Duty
Example: W  B  28  2
W = Borg Warner
B = Month (February)
28 = Day of Month.
2 =  Shift

 

Three Speed Heavy Duty
Example: W  B  28  2
W = Borg Warner
B = Month (February)
28 = Day of Month.
2 =  Shift

 

Five Speed Syncro-Mesh (New Process)
Example: 2  28  7
2 = Month.
28 = Day of Month.
7 = Year

Five Speed Syncro-Mesh HD (Spicer)
Example: D  B  28  7
D = Manufacture
B = Month (February)
28 = Day of Month.
7 = Year.

Six Speed Automatic (Powermatic)
Series 6000 with 261 cu in engine = Red Plate Color
Series 50-60-70-8000 with 283 cu in engine = Yellow Plate Color.
Series 90-100 (exc. 8800 & 10800) with 322 cu in engine = Green Plate Color