1956 Chevy Big Truck VIN Decoder 2018-10-25T18:57:28+00:00

1956 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: 3C56F 001234
3C = Series*, 56 = Year, F = Assembly Plant,
001234 = Unit Number beginning with 001001 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, Step Van
3D3/43500125Forward Control, Step Van
3E3/43600123.2Flat Face Cowl Chassis, Cab Chassis, Pickup, Stake & W/S Cowl Chassis
3F13700137Forward Control, Step Van
3G13800135Flat Face Cowl Chassis, Cab Chassis, Pickup, Panel, Stake & W/S Cowl Chassis
4A1-1/24100130Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
4B1-1/24400154Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
4C1-1/24500154School Bus Chassis
5A25100112.6Cab Chassis
5B25400136.6Cab Chassis & Stake
5C25700160.6Cab Chassis & Stake
5D1-1/2HD5100S112.6Cab Chassis
5E1-1/2HD5400S136.6Cab Chassis & Stake
5F1-1/2HD5700S160.6Cab Chassis
6A26100130Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
6B26400154Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
6C26500172Flat Face Cowl Chassis, Cab Chassis & W/S Cowl Chassis
6D26702194School Bus Chassis
6E26800220School Bus Chassis
6F1-1/2HD6100S130Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
6G1-1/2HD6400S154Flat Face Cowl Chassis, Cab Chassis, Stake & W/S Cowl Chassis
6H1-1/2HD6500S172Flat 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
  	S = "Special" Model 
	@ = 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, 6000, 6000S & 6000H  = 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)TypeRatiosSeries
3300AF3.90:131 and 3200 Regular Production
3300AG4.11:131 and 3200 with RPO 315
5000CA5.14:134-35-3700 Regular Production
5000CB5.14:134-35-37-3800 with RPO 299
5000CC4.57:13600 Regular Production with RPO’s 314-316-318
5000CD4.57:13600 with RPO 285
5000CE5.14:134-35-3700 with RPO’s 316-318-321
7200CF5.14:13800 Regular Production, (34-35-3700 RPO 205)
11000CG6.17:14000 Regular Production
11000CH6.17:150-70-8000 Regular Production (except 8800); (6000 with RPO 252)
13000CJ6.17:16000 Regular Production
15000CM7.20:15-6000 RPO 252
15000CM7.20:17-8000 (exc.8800) with RPO 252
15000CM7.20:18800-10800 Regular Production
15000CL6.40/8.7150-60-70-8000 with RPO 201-415
30000DA7.20:110400-10500-10700 with Tandem Equipment RPO 476

Rear Axle Identification (Eaton)
Example: 7.17    001250    S-9460
7.17 = Ratio
001250 = Serial Number.
S-9460 = Eaton Spec. Number

Specification Number is stamped on the Housing Arm.
Ratio and Serial Numbers are stamped on the Carrier.

Capacity (lbs)Spec NumbersRatiosSeries and Capacity
16000S-94607.17:17000-8000(exc. 8800) RPO 467
16000S-94607.17:19000-10000 (exc. 10800) Regular Production
16000S-94607.17:110800 RPO 468
16000S-94616.50/9.04:17000-8000 (exc. 8800) RPO 475
16000S-94616.50/9.04:19000-10000 (exc. 10800) RPO 479
18000S-94587.17:1 HD9000-10000 (exc. 10800) RPO 468
18000S-94596.50/8.87:19000-10000 (exc. 10800) RPO 479

Front Axle Identification

MakeCapacity (lbs)I-Beam Height (average)SpecSeries
Chevrolet22002.0931-3200
Chevrolet25002.19 – 2.343600
Chevrolet35002.19 – 2.343800
Chevrolet40002.19 – 2.3441-4400
Chevrolet40002.44 – 2.5934-35-3700
Chevrolet45002.44 – 2.5945-5000-61-6500 (RPO 41-4400)
Chevrolet47502.44 – 2.596700-6800
Eaton70003.2570-80-90-10000

Engine Serial Numbers (Loadmaster Excluded)
Example:  001234 F 56 E
001234 = Unit Number starting with 001001 at each source; 6 & 8 cylinder engines are numbered separately.
F = Flint; T = Tonawanda.
56 = Year.
E = Type and Series designation.

TypeSeriesDescription
X31-3200Thriftmaster 235 with 3-speed (regular production)
XG31-3200Thriftmaster 235 with Hydramatic
VC31-3200Thriftmaster 235 with HD clutch
A31-3200Trademaster 265
B31-3200Trademaster 265 with Hydramatic Transmission
M31-3200Trademaster 265 with HD Clutch
W34-35-3700Thriftmaster 235 (regular production)
WA34-35-3700Thriftmaster 235 with Hydramatic Transmission
D34-35-3700Trademaster 265
DA34-35-3700Trademaster 265 with Hydramatic Transmission
DB34-35-3700Trademaster 265 with HD Clutch
XA3600Thriftmaster 235 (regular production)
XGA3600Thriftmaster 235 with Hydramatic Transmission
VA3600Thriftmaster 235 with HD Clutch
AA3600Trademaster 265.
BA3600Trademaster 265 with Hydramatic Transmission
MA3600Trademaster 265 with HD Clutch
XB3800Thriftmaster 235 (regular production)
XGB3800Thriftmaster 235 with Hydramatic Transmission
VB3800Thriftmaster 235 with HD Clutch
AB3800Trademaster 265
BB3800Trademaster 265 with Hydramatic Transmission
MB3800Trademaster 265 with HD Clutch
V4000Thriftmaster 235
XGC41-4400Thriftmaster 235 with Hydramatic Transmission
UA4000Thriftmaster HD 235 (regular production)
UD41-4400Thriftmaster HD 235 with Hydramatic Transmission
AC4000Trademaster 265 (Light Duty V8)
BC41-4400Trademaster 265 with Hydramatic Transmission
MC4000Trademaster 265 with HD Clutch
HA4000Taskmaster 265 (Heavy Duty V8)
E5000Taskmaster 265
EA5000Taskmaster 265 with Powermatic Transmission
U6000Thriftmaster 235
TA6000Jobmaster 261
TD6000Jobmaster 261 with Powermatic Transmission
H6000Taskmaster 265
JB6000Taskmaster 265 with Powermatic Transmission
K7000Taskmaster 265
KA7000Taskmaster 265 with Powermatic Transmission
KC7000Taskmaster 265 with AOHB
KD7000Taskmaster 265 with Powermatic Transmission and AOHB
KE7000Taskmaster 265 with 4BC
KF7000Taskmaster 265 with 4BC and Powermatic Transmission
KG7000Taskmaster 265 with 4BC, Powermatic Transmission and AOHB
KH7000Taskmaster 265 with 4BC and AAOHB
L8000Taskmaster 265
LA8000Taskmaster 265 with Powermatic Transmission
LC8000Taskmaster 265 with AOHB
LD8000Taskmaster 265 with Powermatic Transmission and AOHB
LE8000Taskmaster 265 with 4BC
LF8000Taskmaster 265 with 4BC and Powermatic Transmission
LG8000Taskmaster 265 with 4BC and AOHB
LH8000Taskmaster 265 with 4BC, Powermatic Transmission and AOHB

AOHB = Air Over Hydraulic Brakes

Loadmaster Engine Serial Numbers (322 cu. in. V8, Buick)
Example: CA2 – 001234
CA2 = Source and Designation
001234 = Unit Number starting with 001001

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

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 6 2
W = Borg Warner 
B = Month (February)	
28 = Day of Month
6 = Year
2 = Shift

Five Speed Syncro-Mesh (New Process)
Example: 2 28 6
2 = Month.
28 = Day of Month
6 = Year

Five Speed Syncro-Mesh HD (Spicer)
Example: D B 28 6
D = Manufacture (Dana Corp)
B = Month (February)
28 = Day of Month
6 = Year.

 

Six Speed Automatic (Powermatic)
Series 61-64-6500 = Red Plate Color
Series 50-70-80-90-10000 = Green Plate Color