Chevrolet Big Block Engine Identification – Casting Numbers, Date & Engine Codes

Chevrolet Big Block Logo

Chevrolet Big Block

 

Chevrolet Big Block Engine Identification –  Casting Number and Codes locations.

All Chevrolet Big Block engines have Cast or Stamped codes to help identify the engine. With these codes, you can determine the engine’s cubic inches, HP rating, and carburation. You can also find out what type of vehicle the engine is from, and where and when it was produced.

Here is some information to help you identify your Chevrolet Big Block.

Chevrolet Big Block Engine Identification

Chevrolet Big Block Engine Identification

 

Chevrolet Big Block Engine VIN Number.

The Engine VIN Number is the last 6 or 9 digits of the vehicle’s VIN number. This engine Vin was only federally mandated starting in 1968. Chevrolet engine produced prior to 1968 may or may not have a partial Vin.

Chevrolet Big Block Engine VIN Number Location

The Engine VIN is a stamped code located at the front passenger side of the block, on the machined boss just below the Head. Some Truck or Marine blocks may have the codes stamped on the flat block just above the timing cover. The 1st digit represents the GM division. 2nd digit is the production year. The 3rd digit denotes the vehicle assembly plant, and the last 6 digits equal the last 6 digits of the vehicle’s VIN that the engine was installed in.

Decoding the VIN Number

1st Number = GM Division
2nd Number = Production year.
3rd Letter = The assembly plant.
Last 6 Digits = Equal the last 6 digits of the vehicle’s VIN.

Example: VIN 19F123456

1 = Chevrolet
9 = 1969
F = Flint, Michigan
123456 = Matches the last 6 numbers of the VIN of the vehicle the engine was installed in.

GM Division Code

1 = Chevrolet
2 = Pontiac
3 = Oldsmobile
4 = Buick
6 = Cadillac

Chevrolet Assembly Plant Codes

Code / Plant
0 = Oshawa, Canada
1 = Oshawa, Canada
2 = St. Therese, Canada
A = Atlanta, Georgia
B = Baltimore, Maryland
C = Southgate, California
D = Doraville, Georgia
F = Flint, Michigan
G = Framingham, Massachusetts
J =  Janesville, Wisconsin
K = Kansas City, Missouri
L =  Los Angeles, California
N = Norwood, Ohio
O =  Oakland, California
R =  Arlington, Texas
S = St. Louis, Missouri
T =  Tarrytown, New York
U =  Lordstown, Ohio
W = Willow Run, Michigan
Y = Wilmington, Delaware
Z =  Fremont, California

 

Chevrolet Big Block Engine Code.

The engine code designates the assembly factory, the date of assembly, and the vehicle model it was installed in.

Chevrolet Big Block Engine Code Location.

The Engine Code is located near the Vin number on the machined boss at the front passenger side of the block. Some Truck or Marine blocks may have the codes stamped on the flat block just above the timing cover.

Decoding the Engine Code.

The first letter of the code designates the assembly factory. The numbered 2nd and 3rd digits represent the month and the 4th and 5th  indicate the day of the assembly. The last 2 or 3 digits are the Engine Suffix code which designates the vehicle type or model the engine was installed in.

Example: T0525ED

T = Tonawanda
05 = May
25 = 25th Day
ED = Chevelle, Manual Transmission

Engine Assembly Plant Code

F = Flit
K = McKinnon Industries
S = Saginaw Service
T = Tonawanda
V = Flit

 

Chevrolet Big Block Engine Suffix Codes.

CodeYearApplicationSizeHPTransNotes
0FC1990Marine502380LX-2, 4-Bolt Main
0FD1990Marine502380LX-2, 4-Bolt Main
0FF1990Marine502380LX-2, 4-Bolt Main
0FH1990Marine502380LX-2, 4-Bolt Main
0FJ1990Marine502380LX-2, 4-Bolt Main
0XA1990Marine454370L-9 4-Bolt Main
0XB1980Marine454225LE-8
0XC1980Marine454225LE-8
0XC1990Marine454370L-9 4-Bolt Main
0XD1990Marine454310L-9 4-Bolt Main
0XF1980Marine454225LE-8
0XF1990Marine454370L-9 4-Bolt Main
0XG1990Marine454310L-9 4-Bolt Main
0XH1980Marine454225LE-8
0XH1990Marine454370L-19,  4-Bolt Main, Jet Drive
0XJ1980Marine454225LE-8
0XJ1990Marine454310L-9 4-Bolt Main
0XK1980Marine454225LE-8
0XK1990Marine454310L-19,  4-Bolt Main, Jet Drive
0XN1980Marine454225LE-8
0XN1990Marine454310L-9 4-Bolt Main
0XR1980Marine454225LE-8
0XR1990Marine454310L-9 4-Bolt Main
0XS1980Marine454225LE-8
0XS1990Marine454310L-9 4-Bolt Main
0XT1990Marine454310L-9 4-Bolt Main
0XU1980Marine454225LE-8
0XU1990Marine454310L-9 4-Bolt Main
0XW1990Marine454310L-9 4-Bolt Main
0XY1980Marine454225LE-8
0XY1990Marine454310L-9 4-Bolt Main
0XZ1980Marine454225LE-8
0XZ1990Marine454310L-9 4-Bolt Main
0ZA1980Marine427220L-43
0ZB1980Marine427220L-43
1FC1991Marine502380LX-2, 4-Bolt Main
1FD1991Marine502380LX-2, 4-Bolt Main
1FF1991Marine502380LX-2, 4-Bolt Main
1FH1991Marine502380LX-2, 4-Bolt Main
1FJ1991Marine502380LX-2, 4-Bolt Main
1XA1991Marine454370L-9 4-Bolt Main
1XB1981Marine454210LE-8
1XC1981Marine454210LE-8
1XC1991Marine454370L-9 4-Bolt Main
1XD1991Marine454310L-9 4-Bolt Main
1XF1981Marine454210LE-8
1XF1991Marine454370L-9 4-Bolt Main
1XG1991Marine454310L-9 4-Bolt Main
1XH1981Marine454210LE-8
1XH1991Marine454370L-19,  4-Bolt Main, Jet Drive
1XJ1981Marine454210LE-8
1XJ1991Marine454280L-9 4-Bolt Main
1XK1981Marine454210LE-8
1XK1991Marine454310L-19,  4-Bolt Main, Jet Drive
1XN1981Marine454210LE-8
1XN1991Marine454310L-9 4-Bolt Main
1XR1981Marine454210LE-8
1XR1991Marine454310L-9 4-Bolt Main
1XS1981Marine454210LE-8
1XS1991Marine454310L-9 4-Bolt Main
1XT1981Marine454210LE-8
1XT1991Marine454310L-19,  4-Bolt Main
1XU1991Marine454310L-19,  4-Bolt Main
1XW1991Marine454310L-9 4-Bolt Main
1XY1981Marine454210LE-8
1XY1991Marine454310L-9 4-Bolt Main
1XZ1981Marine454210LE-8
1XZ1991Marine454310L-9 4-Bolt Main
1ZA1981Marine427220L-43
1ZB1981Marine427220L-43
2FC1992Marine502380LX-2, 4-Bolt Main
2FD1992Marine502380LX-2, 4-Bolt Main
2FF1992Marine502380LX-2, 4-Bolt Main
2FH1992Marine502380LX-2, 4-Bolt Main
2FJ1992Marine502380LX-2, 4-Bolt Main
2XA1992Marine454370L-9 4-Bolt Main
2XB1982Marine454210LE-8
2XC1982Marine454210LE-8
2XC1992Marine454370L-9 4-Bolt Main
2XD1992Marine454310L-9 4-Bolt Main
2XF1982Marine454210LE-8
2XF1992Marine454370L-9 4-Bolt Main
2XG1992Marine454310L-9 4-Bolt Main
2XH1982Marine454210LE-8
2XH1992Marine454370L-19,  4-Bolt Main, Jet Drive
2XJ1982Marine454210LE-8
2XJ1992Marine454280L-9 4-Bolt Main
2XK1982Marine454210LE-8
2XK1992Marine454310L-19,  4-Bolt Main, Jet Drive
2XN1982Marine454210LE-8
2XN1992Marine454310L-9 4-Bolt Main
2XR1982Marine454210LE-8
2XR1992Marine454310L-9 4-Bolt Main
2XS1982Marine454210LE-8
2XS1992Marine454310L-9 4-Bolt Main
2XT1982Marine454210LE-8
2XT1992Marine454310L-9 4-Bolt Main
2XU1992Marine454310L-9 4-Bolt Main
2XW1992Marine454310L-9 4-Bolt Main
2XY1982Marine454210LE-8
2XY1992Marine454310L-9 4-Bolt Main
2XZ1982Marine454210LE-8
2XZ1992Marine454310L-9 4-Bolt Main
2ZA1982Marine427220L-43
2ZB1982Marine427220L-43
2ZC1982Marine427220L-43
3FC1993Marine502380LX-2, 4-Bolt Main
3FD1993Marine502380LX-2, 4-Bolt Main
3FF1993Marine502380LX-2, 4-Bolt Main
3FH1993Marine502380LX-2, 4-Bolt Main
3FJ1993Marine502380LX-2, 4-Bolt Main
3HC1993Marine502380LX-2, 4-Bolt Main
3HD1993Marine502380LX-2, 4-Bolt Main
3HH1993Marine502380LX-2, 4-Bolt Main
3HJ1993Marine502380LX-2, 4-Bolt Main
3UA1993Marine454370L-9 4-Bolt Main
3UB1993Marine454310L-9 4-Bolt Main
3UF1993Marine454370L-9 4-Bolt Main
3UH1993Marine454370L-19,  4-Bolt Main, Jet Drive
3XA1993Marine454370L-9 4-Bolt Main
3XB1983Marine454230LE-8
3XC1983Marine454230LE-8
3XC1993Marine454370L-9 4-Bolt Main
3XD1983Marine454230LE-8
3XF1983Marine454230LE-8
3XF1993Marine454370L-9 4-Bolt Main
3XH1983Marine454230LE-8
3XH1993Marine454370L-19,  4-Bolt Main, Jet Drive
3XJ1983Marine454230LE-8
3XK1983Marine454230LE-8
3XK1993Marine454310L-19,  4-Bolt Main, Jet Drive
3XN1983Marine454230LE-8
3XN1993Marine454310L-9 4-Bolt Main
3XR1983Marine454230LE-8
3XR1993Marine454310L-9 4-Bolt Main
3XS1983Marine454230LE-8
3XS1993Marine454310L-9 4-Bolt Main
3XT1983Marine454230LE-8
3XW1993Marine454310L-9 4-Bolt Main
3XX1993Marine454310L-9 4-Bolt Main
3XY1983Marine454230LE-8
3XY1993Marine454310L-9 4-Bolt Main
3XZ1983Marine454230LE-8
3YD1993Marine454280L-9 4-Bolt Main
3YJ1993Marine454280L-9 4-Bolt Main
3YT1993Marine454280L-9 4-Bolt Main
3YU1993Marine454280L-9 4-Bolt Main
3YZ1993Marine454280L-9 4-Bolt Main
4FC1994Marine502380LX-2, 4-Bolt Main
4FD1994Marine502380LX-2, 4-Bolt Main
4FF1994Marine502380LX-2, 4-Bolt Main
4FH1994Marine502380LX-2, 4-Bolt Main
4FJ1994Marine502380LX-2, 4-Bolt Main
4HC1994Marine502380LX-2, 4-Bolt Main
4HD1994Marine502380LX-2, 4-Bolt Main
4HH1994Marine502380LX-2, 4-Bolt Main
4HJ1994Marine502380LX-2, 4-Bolt Main
4T1968Chevelle396325Manual
4U1968Chevelle396350Manual
4UA1994Marine454370L-9 4-Bolt Main
4UB1994Marine454310L-9 4-Bolt Main
4UF1994Marine454370L-9 4-Bolt Main
4UH1994Marine454370L-19,  4-Bolt Main, Jet Drive
4W1968Chevelle396350Automatic
4XA1994Marine454370L-9 4-Bolt Main
4XB1984Marine454230LE-8
4XC1984Marine454230LE-8
4XC1994Marine454370L-9 4-Bolt Main
4XD1984Marine454230LE-8
4XF1984Marine454230LE-8
4XF1994Marine454370L-9 4-Bolt Main
4XH1984Marine454230LE-8
4XH1994Marine454370L-19,  4-Bolt Main, Jet Drive
4XJ1984Marine454230LE-8
4XK1984Marine454230LE-8
4XK1994Marine454310L-19,  4-Bolt Main, Jet Drive
4XL1984Marine454230LE-8
4XM1984Marine454230LE-8
4XN1984Marine454230LE-8
4XN1994Marine454310L-9 4-Bolt Main
4XR1984Marine454230LE-8
4XR1994Marine454310L-9 4-Bolt Main
4XS1984Marine454230LE-8
4XS1994Marine454310L-9 4-Bolt Main
4XT1984Marine454230LE-8
4XU1984Marine454230LE-8
4XW1994Marine454310L-9 4-Bolt Main
4XX1994Marine454310L-9 4-Bolt Main
4XY1984Marine454230LE-8
4XY1994Marine454310L-9 4-Bolt Main
4XZ1984Marine454230LE-8
4YD1994Marine454280L-9 4-Bolt Main
4YJ1994Marine454280L-9 4-Bolt Main
4YT1994Marine454280L-9 4-Bolt Main
4YU1994Marine454280L-9 4-Bolt Main
4YZ1994Marine454280L-9 4-Bolt Main
5XB1975Marine454215LS-4
5XB1985Marine454240LE-8
5XC1975Marine454215LS-4
5XC1985Marine454240LE-8
5XD1975Marine454215LS-4
5XD1985Marine454240LE-8
5XF1985Marine454240LE-8
5XH1985Marine454240LE-8
5XI1985Marine454240LE-8
5XK1985Marine454240LE-8
5XM1985Marine454240LE-8
5XN1985Marine454240LE-8
5XR1985Marine454240LE-8
5XS1985Marine454240LE-8
5XT1985Marine454240LE-8
5XU1985Marine454240LE-8
5XY1985Marine454240LE-8
5XZ1985Marine454240LE-8
6HF1986Marine454240LE-8
6HH1986Marine454240LE-8
6XB1976Marine454215LS-4
6XB1986Marine454240LE-8
6XC1976Marine454215LS-4
6XC1986Marine454240LE-8
6XD1976Marine454215LS-4
6XD1986Marine454240LE-8
6XF1976Marine454215LS-4
6XF1986Marine454240LE-8
6XH1976Marine454215LS-4
6XH1986Marine454240LE-8
6XJ1976Marine454215LS-4
6XJ1986Marine454240LE-8
6XK1976Marine454215LS-4
6XK1986Marine454240LE-8
6XL1986Marine454240LE-8
6XM1986Marine454240LE-8
6XN1986Marine454240LE-8
6XR1986Marine454240LE-8
6XS1986Marine454240LE-8
6XT1986Marine454240LE-8
6XU1986Marine454240LE-8
6XY1986Marine454240LE-8
6XZ1986Marine454240LE-8
7XA1987Marine454240LE-8
7XB1977Marine454250LF-8
7XC1977Marine454250LF-8
7XD1987Marine454240LE-8
7XF1977Marine454250LF-8
7XF1987Marine454240LE-8 , 4-Bolt Main
7XH1977Marine454250LF-8
7XH1987Marine454240LE-8,  4-Bolt Main Jet Drive
7XJ1977Marine454250LF-8
7XJ1987Marine454240LE-8
7XK1977Marine454250LF-8
7XK1987Marine454240LE-8,  2-Bolt Main, Jet Drive
7XL1987Marine454240LE-8
7XM1977Marine454250LF-8
7XN1977Marine454250LF-8
7XN1987Marine454240LE-8 , 2-Bolt Main
7XP1987Marine454240LE-8 , 4-Bolt Main
7XR1977Marine454250LF-8
7XR1987Marine454240LE-8 , 2-Bolt Main
7XS1977Marine454250LF-8
7XS1987Marine454240LE-8 , 2-Bolt Main
7XT1977Marine454250LF-8
7XT1987Marine454240LE-8
7XU1987Marine454240LE-8
7XX1987Marine454310L-9 4-Bolt Main
7XY1987Marine454240LE-8, 2- Bolt Main Inboard
7XZ1987Marine454240LE-8, 2- Bolt Main Inboard
8FA1988Marine502380LX-2
8FB1988Marine502380LX-2
8FC1988Marine502380LX-2
8XA1988Marine454310L-19
8XB1978Marine454250LF-8
8XC1978Marine454250LF-8
8XD1988Marine454310L-19
8XF1978Marine454250LF-8
8XF1988Marine454310L-9 4-Bolt Main
8XH1978Marine454250LF-8
8XH1988Marine454310L-19,  4-Bolt Main, Jet Drive
8XJ1978Marine454250LF-8
8XJ1988Marine454310L-19
8XK1978Marine454250LF-8
8XK1988Marine454310L19 2-Bolt Main
8XL1988Marine454310L-19
8XM1978Marine454250LF-8
8XN1978Marine454250LF-8
8XN1988Marine454310L19 2-Bolt Main
8XP1988Marine454310L-9 4-Bolt Main
8XR1978Marine454250LF-8
8XR1988Marine454310L19 2-Bolt Main
8XS1978Marine454250LF-8
8XS1988Marine454310L19 2-Bolt Main
8XT1978Marine454250LF-8
8XT1988Marine454310L-19
8XU1988Marine454310L-19
8XX1988Marine454310L-9 4-Bolt Main
8XY1988Marine454310L19 2-Bolt Main
8XZ1988Marine454310L19 2-Bolt Main
8ZA1979Marine427220L-43
9FA1989Marine502380LX-2
9FB1989Marine502380LX-2
9FC1989Marine502310LX-2
9XA1989Marine454310L-19
9XB1979Marine454245LF-8
9XC1979Marine454245LF-8
9XD1989Marine454310L-19
9XF1979Marine454245LF-8
9XF1989Marine454310L-9 4-Bolt Main
9XH1979Marine454245LF-8
9XH1989Marine454310L-19,  4-Bolt Main, Jet Drive
9XJ1979Marine454245LF-8
9XJ1989Marine454310L-19
9XK1979Marine454245LF-8
9XK1989Marine454310L19, 2-Bolt Main, Jet Drive
9XL1989Marine454310L-19
9XM1979Marine454245LF-8
9XN1979Marine454245LF-8
9XN1989Marine454310L19 2-Bolt Main
9XP1989Marine454310L-9 4-Bolt Main
9XR1979Marine454245LF-8
9XR1989Marine454310L19 2-Bolt Main
9XS1979Marine454245LF-8
9XS1989Marine454310L19 2-Bolt Main
9XT1979Marine454245LF-8
9XT1989Marine454310L-19
9XU1989Marine454310L-19
9XX1989Marine454310L-9 4-Bolt Main
9XY1989Marine454310L19 2-Bolt Main
9XZ1989Marine454310L19 2-Bolt Main
AAA1973Truck366200ManualL-86
AAS1973Truck427230ManualL-43
ACA1984Marine427220.L-43
ACB1984Marine427220.L-43
ACF1984Marine427220.L-43
ADA1983Marine427220.L-43
ADB1983Marine427220.L-43
ADC1983Marine427220.L-43
ADS1973Truck366200ManualL-86
ADU1973Truck366200540L-86
ADV1973Truck366200AutomaticL-86
ADW1973Truck366200ManualL-86
ADX1973Truck366200540L-86
ADZ1973Truck427230ManualL-43
AEA1973Truck427230ManualL-43
AFA1976Truck366200ManualL-86
AFD1977Truck366200ManualL-86
AFF1977Truck366200540L-86
AFH1977Truck366200ManualL-86
AFJ1977Truck366200540L-86
AFK1978Marine427220ManualL-43
AFL1977Truck366200ManualL-86
AFM1978Truck366200ManualL-86
AFR1978Truck366200ManualL-86
AFS1976Truck366200540L-86
AFT1973Truck366200ManualL-86
AFT1974Truck366200ManualL-86
AFU1973Truck366200ManualL-86
AFU1974Truck366200ManualL-86
AFU1978Truck366200ManualL-86
AHA1974Truck366200ManualL-86
AHA1979Truck366190ManualL-86 VIN B
AHC1979Truck366190ManualL-86 VIN B
AHD1975Truck366200ManualL-86
AHD1976Truck366200ManualL-86
AHH1975Truck366200ManualL-86
AHH1976Truck366200ManualL-86
AHH1977Truck366200650L-86
AHH1979Truck366190ManualL-86 VIN B
AHJ1975Truck366200540L-86
AHJ1976Truck366200540L-86
AHJ1978Truck366200ManualL-86
AHK1973Truck366200ManualL-86
AHK1974Truck366200ManualL-86
AHL1975Truck366200AutomaticL-86
AHL1976Truck366200AutomaticL-86
AHL1979Truck366190ManualL-86 VIN B
AHM1973Truck366200540L-86
AHM1974Truck366200540L-86
AHN1973Truck366200ManualL-86
AHR1973Truck366200540L-86
AHR1974Truck366200540L-86
AHR1978Truck366200ManualL-86
AHS1973Truck366200ManualL-86
AHS1974Truck366200AutomaticL-86
AHS1978Truck366200ManualL-86
AHS1979Truck366190ManualL-86 VIN B
AHT1973Truck427230ManualL-43
AHT1978Truck366200ManualL-86
AHU1973Truck427230ManualL-43
AHU1975Truck366200ManualL-86
AHU1976Truck366200ManualL-86
AHU1977Truck366200ManualL-86
AHW1973Truck427230ManualL-43
AHW1975Truck366200540L-86
AHW1976Truck366200540L-86
AHW1977Truck366200540L-86
AHX1975Truck366200ManualL-86
AHX1976Truck366200ManualL-86
AHX1977Truck366200ManualL-86
AHY1975Truck366200ManualL-86
AHY1976Truck366200ManualL-86
AHY1977Truck366200ManualL-86
AHZ1975Truck366200540L-86
AHZ1976Truck366200540L-86
AHZ1977Truck366200540L-86
AJA1977Truck427220540L-43
AJB1973Truck366200AutomaticL-86
AKA1975Truck427220ManualL-43
AKA1976Marine427260.L-43
AKA1977Marine427260.L-43
AKA1979Truck427220ManualL-43 VIN E
AKA1985Truck454240ManualLE-8 VIN W
AKB1975Truck427220.L-43
AKB1975Marine427260.L-43
AKB1976Truck427220.L-43
AKB1976Marine427260.L-43
AKB1977Truck427220.L-43
AKB1977Marine427260.L-43
AKB1979Truck427220ManualL-43 VIN E
AKB1985Truck454240ManualLE-8 VIN W
AKC1975Truck427220.L-43
AKC1975Marine427260.L-43
AKC1976Truck427220ManualL-43
AKC1977Truck427220ManualL-43
AKC1979Truck427220ManualL-43 VIN E
AKC1985Truck454240ManualLE-8 VIN W
AKD1975Truck427220ManualL-43
AKD1976Truck427220ManualL-43
AKD1977Truck427220ManualL-43
AKD1979Truck, Marine427220.L-43 VIN E
AKD1985Truck454240ManualLE-8 VIN W
AKF1978Truck427220ManualL-43 VIN E
AKF1985Truck454240ManualLE-8 VIN W
AKH1975Truck427220ManualL-43
AKH1976Truck427220ManualL-43
AKH1977Truck427220ManualL-43
AKH1979Truck427220ManualL-43 VIN E
AKJ1975Truck427220ManualL-43
AKJ1976Truck427220ManualL-43
AKJ1977Truck427220ManualL-43
AKJ1979Truck427220ManualL-43 VIN E
AKJ1985Truck454240ManualLE-8 VIN W
AKK1976Truck366200ManualL-86
AKK1978Truck, Marine427220.L-43 VIN E
AKK1985Truck454240ManualLE-8 VIN W
AKL1976Truck366200540L-86
AKL1977Truck366200540L-86
AKM1976Truck366200ManualL-86
AKM1977Truck366200ManualL-86
AKM1979Truck427220AutomaticL-43 VIN E
AKM1985Truck454240ManualLE-8 VIN W
AKN1985Truck454240ManualLE-8 VIN W
AKR1976Truck366200540L-86
AKR1977Truck366200540L-86
AKR1985Truck, Marine454240.LE-8 VIN W
AKS1976Truck427220ManualL-43
AKS1977Truck427220ManualL-43
AKS1986Marine454240.LE-8
AKT1974Truck427230ManualL-43
AKT1978Truck427220ManualL-43 VIN E
AKT1986Truck454240ManualLE-8 VIN W
AKU1974Truck427230ManualL-43
AKU1978Truck427220ManualL-43 VIN E
AKU1986Marine454240.LE-8
AKW1974Truck427230ManualL-43
AKW1986Truck454240ManualLE-8 VIN W
AKX1976Truck427220ManualL-43
AKX1977Truck427220ManualL-43
AKX1986Truck454240ManualLE-8 VIN W
AKY1986Truck454240ManualLE-8 VIN W
AKZ1986Truck454240ManualLE-8 VIN W
ALA1977Truck427220540L-43
ALA1986Truck454240ManualLE-8 VIN W
ALB1977Truck427220540L-43
ALB1980Marine427220.L-43
ALB1986Truck454240ManualLE-8 VIN W
ALC1977Truck427220540L-43
ALC1986Truck454240ManualLE-8 VIN W
ALD1977Truck427220540L-43
ALD1986Truck454240ManualLE-8 VIN W
ALF1977Truck427220ManualL-43
ALH1986Truck454240ManualLE-8 VIN W
ALK1978Truck427220ManualL-43 VIN E
ALK1987Truck454230ManualL-19 TBI VIN N
ALM1978Truck427220ManualL-43 VIN E
ALS1978Truck427220ManualL-43 VIN E
ALS1987Truck454230ManualL-19 TBI VIN N
ALX1987Truck454230ManualL-19 TBI VIN N
ALY1987Truck454230ManualL-19 TBI VIN N
AMA1986Marine427220.L-43
AMB1986Marine427220.L-43
AMC1986Marine427220.L-43
AMD1981Marine427220.L-43
AMJ1986Marine427220.L-43
AML1986Marine427220.L-43
ARM1978Truck366200ManualL-86
ASB1988Truck454230ManualL-19 TBI VIN N
ASC1988Truck454230ManualL-19 TBI VIN N
ATA1975Truck366200AutomaticL-86
ATB1975Truck366200ManualL-86
ATB1976Truck366200ManualL-86
ATB1977Truck366200ManualL-86
ATC1975Truck366200540L-86
ATC1976Truck366200540L-86
ATC1977Truck366200540L-86
AUA1979Truck454245ManualL-42 VIN S
AUB1979Truck454245ManualL-42 VIN S
AWB1989Truck454230ManualLE-8 VIN W
AWC1989Truck454230ManualLE-8 VIN W
AWH1989Truck454230ManualL-19 TBI VIN N
AWJ1989Truck454230ManualL-19 TBI VIN N
AWK1989Truck454230ManualLE-8 VIN W
AWL1989Truck454230ManualLE-8 VIN W
AWM1989Truck454230ManualLE-8 VIN W
AWN1989Truck454230ManualLE-8 VIN W
AWP1989Truck454230ManualL-19 TBI VIN N
AWR1989Truck454230ManualL-19 TBI VIN N
CGS1970Chevrolet454345ManualLS-4, Police
CGT1970Chevrolet454390ManualLS-5 HP, Police
CGU1970Chevrolet454390ManualLS-5 HP
CGV1970Chevrolet454345ManualLS-4
CGW1970Corvette454390AutomaticLS-5 HP
CIL1969Camaro402350AutomaticHigh Performance
CJA1969Chevelle402325ManualL-35
CJB1969Camaro402325PowerglideL-35 Aluminum Heads
CJC1969Chevelle402350ManualL-34 High Performance
CJD1969Chevelle4023754 Speed ManualL-78, Solid Cam, Hollye Carb
CJE1969Chevelle402350AutomaticL-34 High Performance
CJF1969Chevelle402375AutomaticL-78
CJF1970Camaro396350Manual
CJG1969Camaro402325AutomaticL-35
CJH1969Camaro402375ManualL-78
CJH1970Camaro396375L-78
CJI1969Camaro402350TH 400L-34
CJK1969Chevelle402325AutomaticL-35
CJL1969Camaro402375AutomaticL-78
CJL1970Camaro396350AutomaticL-34
CJU1969Camaro402325ManualL-35
CJV1969Chevelle402325ManualL-35
CKF1969Chevelle402375TH 400L-78, Solid Cam
CKN1970Chevelle402330TH 400LS-3
CKO1970Chevelle396375ManualL-78
CKP1970Nova396375AutomaticL-89 SHP
CKQ1970Chevelle396375ManualL-78
CKR1970Chevelle4023304 Speed ManualLS-3
CKS1970Chevelle4023304 Speed ManualLS-3, HD Clutch
CKT1970Chevy II, Chevelle396375ManualL-89 SHP
CKU1970Chevelle396375ManualL-89 SHP
CLA1971Chevelle402300TH 400LS-3
CLA1972Chevelle402240ManualLS-3
CLB1971Monte Carlo, Chevelle396300AutomaticLS-3
CLB1972Monte Carlo, Chevelle396210ManualLS-3
CLC1971Camaro402300ManualLS-3
CLD1971Camaro396300AutomaticLS-3
CLL1971Monte Carlo, Chevelle402300ManualLS-3
CLP1971Monte Carlo402300AutomaticLS-3
CLR1971Chevrolet402300ManualLS-3
CLR1972Chevrolet402210LS-3
CLS1971Chevelle, Monte Carlo402300ManualLS-3
CLS1972Chevelle402240ManualLS-3
CPA1971Monte Carlo, Chevelle454365ManualLS-5
CPA1972Chevelle454270ManualLS-5
CPD1971Monte Carlo, Chevelle454365ManualLS-5
CPD1972Monte Carlo, Chevelle454270AutomaticLS-5
CPG1971Chevelle, Monte Carlo454365ManualLS-5
CPG1972Chevrolet454270AutomaticLS-5
CPH1971Corvette454365ManualLS-5
CPH1972Corvette454270ManualLS-5
CPJ1971Corvette454365AutomaticLS-5
CPJ1972Corvette454270AutomaticLS-5
CPP1971Chevelle454425ManualLS-6
CPR1971Chevelle454425AutomaticLS-6
CPS1971Nova454425TH 400LS-6
CPT1971Nova4544254 Speed ManualLS-6
CPW1971Corvette454425ManualZR-2
CPX1971Corvette454425AutomaticLS-6
CPY1971Chevelle454425TH 400LS-6
CPZ1971Chevelle454425TH 400LS-6
CRI1970Corvette454390ManualLS-5 HP
CRJ1970Corvette454390ManualLS-5
CRN1970Chevelle454360ManualLS-5 HP
CRQ1970Chevelle454360AutomaticLS-5 HP
CRR1970Chevelle454450AutomaticLS-6 SHP
CRS1970Chevelle454450AutomaticLS-6 SHP, Aluminum  Heads
CRT1970Chevelle454360ManualLS-5 HP
CRV1970Chevelle454450ManualLS-6 HP
CRW1972Chevelle454270AutomaticLS-5
CRX1972Chevelle454270ManualLS-5
CRY1972Chevrolet454270AutomaticLS-5
CSR1972Corvette454270ManualLS-5
CSS1972Corvette454270ManualLS-5
CTA1972Chevelle, Camaro402240ManualLS-3
CTB1972Chevelle, Camaro396240AutomaticLS-3
CTH1972Chevelle402240AR
CTJ1972Monte Carlo402210
CTW1970Chevy II, Chevelle396350ManualHP
CTX1970Chevy II, Chevelle396350HP
CTY1970Camaro, Chevelle396375Special High Performance
CTZ1970Chevelle396350ManualHP
CWA1973Chevelle454250Automatic
CWA1974Chevelle454235Manual
CWB1973Chevelle454250Manual
CWC1973Chevelle454250AutomaticCA
CWD1973Monte Carlo454245ManualCA
CWD1974Monte Carlo, Chevelle454235AutomaticCalifornia
CWI1973Chevrolet454250AutomaticCA
CWK1973Chevrolet454250Automatic
CWL1973Chevrolet454250
CWM1973Corvette454275Automatic
CWM1974Corvette454270Automatic
CWR1973Corvette454275Automatic
CWR1974Corvette454270Automatic
CWS1973Corvette454275ManualCA
CWS1974Corvette454270ManualCA
CWT1973Corvette454275CA
CWT1974Corvette454270
CWU1974Chevrolet454235AutomaticPolice
CWW1974Chevrolet454235AutomaticCA Police
CWX1974Monte Carlo, Chevelle454235Automatic
CWY1974Chevrolet454235AutomaticCA
CXA1974Chevrolet454235AutomaticCA
CXB1974Chevrolet454235AutomaticCA
CXC1974Chevrolet454235AutomaticCA
CXK1975Chevrolet454215Automatic
CXL1975Chevrolet454215Automatic
CXM1974Chevelle454235Automatic
CXR1974Monte Carlo, Chevelle454235
CXS1974Chevelle454235Automatic
CXT1974Chevrolet454235Automatic
CXU1974Chevrolet454235Automatic
CXW1975Chevelle454215Automatic
CXX1975Chevrolet454215Automatic
CXX1976Chevrolet454225LS4
CXY1975Chevrolet454215
CZL1970Corvette454465AutomaticHD
CZN1970Corvette454465HD
CZU1970Corvette454390HP
ED1966Chevelle396325Manual
ED1967Chevelle396325Manual
ED1968Chevelle396325Manual
EF1966Chevelle396360ManualHP
EF1967Chevelle396350ManualHP
EF1968Chevelle396350ManualHP
EG1966Chevelle396375ManualSpecial High Performance
EG1967Chevelle396375ManualSpecial High Performance
EG1968Chevelle396375ManualSpecial High Performance
EH1966Chevelle396325Manual
EH1967Chevelle396325Powerglide
EI1967Camaro396350AutomaticHP
EJ1966Chevelle396360PowerglideHP
EJ1967Chevelle396350PowerglideHP
EK1966Chevelle396325Powerglide
EK1967Chevelle396325Powerglide
EK1968Chevelle396325Powerglide
EL1966Chevelle396360PowerglideHP
EL1967Chevelle396350PowerglideHP
EL1968Chevelle396350PowerglideHP
EM1966Chevelle396325Powerglide
EM1967Chevelle396325Automatic
EN1966Chevelle396360HP
EN1967Chevelle396350AutomaticHP
EQ1967Camaro3963500Turbo Hydramatic
ET1967Chevelle396325Automatic
ET1968Chevelle396325Manual
EU1967Chevelle396350AutomaticHP
EU1968Chevelle396350AutomaticHP
EV1967Chevelle396350AutomaticHP
EW1967Chevelle396350AutomaticHP
EX1967Chevelle396375Special High Performance
EY1967Camaro396350ManualHP Air Injector Reactor
IA1965Chevrolet396325Manual
IA1966Chevrolet396325Manual
IA1967Chevrolet396325Manual
IA1968Chevrolet427425ManualSpecial High Performance
IB1966Chevrolet396325Manual
IB1967Chevrolet396325ManualAir Brakes
IB1968Chevrolet427385ManualPolice
IC1965Chevrolet396325PowerglideTransistor Ignition
IC1966Chevrolet396325PowerglideAir Brakes
IC1967Chevrolet396325Automatic
ID1966Chevrolet427425ManualSpecial High Performance
ID1967Chevrolet427425ManualSpecial High Performance
ID1968Chevrolet427425Special High Performance
IE1965Chevrolet396425ManualSpecial High Performance
IE1967Chevrolet427385ManualImpala SS
IE1968Chevrolet427385Automatic
IF1965Corvette396425Manual
IF1967Chevrolet427385ManualAir Brakes  Impala SS
IF1968Chevrolet396325PowerglidePolice
IG1965Chevrolet396325Powerglide
IG1966Chevrolet396325Powerglide
IG1967Chevrolet396325PowerglideAir Brakes
IG1968Chevrolet396325Powerglide
IH1966Chevrolet427390Manual
IH1967Chevrolet427385ManualAir Brakes
IH1968Chevrolet427385Manual
II1965Chevrolet396325Transistor Ignition
II1966Chevrolet427390AutomaticAir Brakes
II1967Chevrolet427385AutomaticAir Brakes
IJ1966Chevrolet427390
IJ1967Chevrolet427385AutomaticAir Brakes
IJ1968Chevrolet427385
IK1966Corvette427425SHP
IK1967Chevrolet427425
IK1968Chevrolet396325Police
IL1966Corvette427390
IL1967Corvette427390
IL1968Corvette427390
IM1966Corvette427390
IM1967Corvette427390
IM1968Corvette427400High Performance
IN1966Chevrolet396325
IN1967Chevrolet396325
IN1968Chevrolet396325Police
IO1966Chevrolet396325
IO1967Chevrolet427385
IO1968Chevrolet427425SHP
IP1966Corvette427425ManualSHP
IQ1966Corvette427390
IQ1967Corvette427390
IQ1968Corvette427390
IR1966Corvette427390
IR1967Corvette427390
IR1968Corvette427435SHP
IS1967Impala SS427385
IS1968Chevrolet427385
IT1967Corvette427435SHP
IT1968Corvette427435SHP
IU1967Corvette427435SHP
IU1968Corvette427435SHP
IV1965Chevrolet396325
IV1966Chevrolet396325
IV1967Chevrolet396325
IV1968Chevrolet396325
IW1965Chevrolet396325
IX1967Impala SS427385Automatic
JA1967Corvette427435SHP
JA1969Chevelle396325
JB1969Camaro396325
JC1967Corvette427400
JC1969Chevelle396350High Performance
JD1967Corvette427400
JD1969Chevelle396375SHP
JE1967Corvette427435SHP
JE1969Chevelle396350High Performance
JF1967Corvette427400
JF1969Chevy II396350High Performance
JG1967Corvette427400
JG1969Camaro396325
JH1967Corvette427435SHP
JH1969Chevy II396375SHP
JI1969Chevy II396350High Performance
JJ1969Camaro396375With Aluminum Heads
JK1969Chevelle396325
JL1969Chevy II396375SHP
JM1969Camaro396375With Aluminum Heads
JN1969Chevrolet396265
JO1969Chevrolet396265Police
JP1969Chevrolet396265Police
JQ1969Chevrolet396265
JR1969Chevrolet396265Police
JT1969Chevrolet396265
JU1969Chevy II396
JV1969Chevelle396325
KA1969Chevy II396350High Performance
KB1969Chevelle396350High Performance
KC1969Camaro396375SHP
KD1969Chevelle396375SHP
KE1969Camaro396375With Aluminum Heads
KF1969Chevelle396375SHP
KG1969Chevelle396375With Aluminum Heads
KH1969Chevelle396375With Aluminum Heads
KI1969Chevelle396375With Aluminum Heads
LA1969Chevrolet427390High Performance
LB1965Chevrolet396325
LB1969Chevrolet427335
LC1965Chevrolet396325
LC1969Chevrolet427390High Performance
LD1969Chevrolet427425SHP
LE1969Chevrolet427335
LF1965Chevrolet396325Manual
LF1969Chevrolet427390High Performance Police
LG1969Chevrolet427390High Performance Police
LH1969Chevrolet427390High Performance
LI1969Chevrolet427335
LJ1969Chevrolet427335Police
LK1969Chevrolet427335Police
LL1969Corvette427390High Performance
LM1969Corvette427390High Performance
LN1969Corvette427400High Performance
LO1969Corvette427430Heavy Duty
LP1969Corvette427435With Aluminum Heads
LQ1969Corvette427400High Performance
LR1969Corvette427435SHP
LS1969Chevrolet427425SHP
LT1969Corvette427435SHP
LU1969Corvette427435With Aluminum Heads
LV1969Corvette427430Heavy Duty
LW1969Corvette427435With Aluminum Heads
LX1969Corvette427435SHD
LY1969Chevrolet427335Police
LZ1969Chevrolet427390High Performance Police
MA1969Chevrolet427335
MB1969Chevrolet427390High Performance Police
MC1969Chevrolet427390High Performance
MD1969Chevrolet427425SHP
ME1969Corvette427430
MG1969Corvette427430
MH1969Corvette427390
MI1969Corvette427390Manual
MJ1969Corvette427400
MK1969Corvette427400
MQ1967Camaro396375
MQ1968Chevy II396375High Performance
MR1967Camaro396375
MR1968Camaro396350
MR1969Corvette427430
MS1969Corvette427
MT1968Camaro396375
MW1967Camaro396325
MW1968Camaro396325
MX1967Camaro396325
MX1968Camaro396350
MY1967Camaro396325
MY1968Camaro396325
MZ1967Camaro396325
OA1963Impala409400L-31
Q1961Impala409360HP With Solid CAM
QA1961Impala409360ManualHP With Solid CAM
QA1962Impala409380HP With Solid CAM
QA1964Impala409400L-31
QB1962Impala409409Dual 4-Barrel
QB1963Impala409425L-80, Dual 4-Barrel
QB1964Impala409425L-80, Dual 4-Barrel
QC1963Impala409340L-33
QC1964Impala409340L-33
QD1962Truck409252
QD1963Truck409252L-40
QD1964Truck409252L-40
QD1965Truck409252L-40
QE1962Truck409252
QE1963Truck409252L-40
QE1964Truck409252L-40
QE1965Truck409252L-40
QG1963Impala409340L-33
QG1964Impala409340L-33
QJ1963Truck409252L-40
QJ1964Truck409252L-40
QJ1965Truck409252L-40
QM1963Impala427435Z-11 Dual 4-Barrel HP, Solid Cam
QN1964Impala409400L-31
QP1964Impala409425L-80, Dual 4-Barrel
QQ1964Impala409340L-33
QR1964Impala409340L-33
T1958Truck348230
T1959Truck348230
TA1958Truck348230
TA1959Truck348230
TBG1970Truck402310L-47
TBH1970Truck402310L-47
TC1960Truck348230
TC1961Truck348230
TC1962Truck348220
TC1963Truck348220
TC1964Truck348220
TCH1992Truck454230L-19 TBI VIN N
TCJ1992Truck454230L-19 TBI VIN N
TCK1992Truck454230L-19 TBI VIN N
TCL1992Truck454230L-19 TBI VIN N
TCN1992Truck454230L-19 TBI VIN N
TCS1992Truck454230L-19 TBI VIN N
TCT1992Truck454230L-19 TBI VIN N
TD1960Truck348230
TD1961Truck348230
TD1962Truck348220
TD1963Truck348220
TD1964Truck348220
TDH1992Truck454230L-19 TBI VIN N
TDJ1992Truck454230L-19 TBI VIN N
TDK1992Truck454230L-19 TBI VIN N
TDL1992Truck454230L-19 TBI VIN N
TE1960Truck348230
TE1961Truck348230
TE1962Truck348220
TE1963Truck348220
TE1964Truck348220
TF1960Truck348230
TF1961Truck348230
TF1962Truck348220
TF1963Truck348220
TF1964Truck348220
THB1972Truck402210
TKA1971Truck402310L-47
TKA1972Truck402210
TKA1982Truck454210LE-8 VIN W
TKB1971Truck402310L-47
TKB1972Truck402210
TKC1982Truck454210LE-8 VIN W
TKD1982Truck454210LE-8 VIN W
TKF1982Truck454210LE-8 VIN W
TKH1982Marine454210LE-8
TKM1972Truck402210
TKW1972Truck402210
TKX1972Truck402210
TLM1972Truck402210
TMI1970Truck427260L-43
TPH1992Truck454230L-19 TBI VIN N, fwd
TPJ1992Truck454230L-19 TBI VIN N
TPK1992Truck454230L-19 TBI VIN N, fwd
TRA1973Truck454240LS-4 VIN Z, L,
TRB1973Truck454240LS-4 VIN Z, L,
TRB1977Truck454250LE-8 VIN W
TRC1973Truck454250LS-4 VIN Z, L,
TRC1977Truck454250LE-8 VIN W
TRC1980Truck454225LE-8 VIN W
TRD1977Truck454250LE-8 VIN W
TRF1978Truck454250LE-8 VIN W
TRF1980Truck454225LE-8 VIN W
TRH1973Truck454240LS-4 VIN Z, L,
TRH1974Truck454245LS-4 VIN Z, L,
TRH1978Truck454250LE-8 VIN W
TRH1980Truck454225AutomaticLE-8 VIN W
TRJ1973Truck454240LS-4 VIN Z, L,
TRJ1974Truck454245LS-4 VIN Z, L,
TRK1973Truck454240LS-4 VIN Z, L,
TRK1978Truck454250LE-8 VIN W
TRK1981Truck454210LE-8 VIN W
TRL1973Truck454240LS-4 VIN Z, L,
TRL1974Truck454245LS-4 VIN Z, L,
TRL1978Truck454250LE-8 VIN W
TRL1981Truck454210LE-8 VIN W
TRM1978Truck454250LE-8 VIN W
TRR1973Truck454250LS-4 VIN Z, L,
TRR1979Truck454205
TRS1979Truck454205
TRT1974Truck454245LS-4 VIN Z, L,
TRT1979Truck454210LE-8 VIN S
TRU1974Truck454245LS-4 VIN Z, L,
TRU1979Truck454205
TRW1974Truck454245LS-4 VIN Z, L,
TRW1979Truck454210LE-8 VIN S
TRX1974Truck454245LS-4 VIN Z, L,
TRX1979Truck454210LE-8 VIN S
TRY1975Truck454215LS-4 VIN Z, L
TRY1978Truck454250LE-8 VIN W
TRZ1975Truck454215LS-4 VIN Z, L
TRZ1976Truck454250LF-8 VIN Y
TRZ1977Truck454250LE-8 VIN W
TRZ1979Truck454205
TSA1975Truck454215LS-4 VIN Z, L
TSA1976Truck454250LF-8 VIN Y
TSA1977Truck454250LE-8 VIN W
TSB1975Truck454215LS-4 VIN Z, L, fwd
TSB1978Truck454250LE-8 VIN W
TSC1975Truck454215LS-4 VIN Z, L
TSC1977Truck454250LE-8 VIN W
TSD1975Truck454215LS-4 VIN Z, L
TSD1977Truck454250LE-8 VIN W
TSF1978Truck454250LE-8 VIN W
TSH1975Truck454215LS-4 VIN Z, L, fwd
TSH1978Truck454250LE-8 VIN W
TSJ1975Truck454215LS-4 VIN Z, L
TSJ1978Truck454250LE-8 VIN W
TSK1975Truck454215LS-4 VIN Z, L
TSK1977Truck454250LE-8 VIN W
TSL1975Truck454215LS-4 VIN Z, L
TSL1976Truck454250LF-8 VIN Y
TSL1977Truck454250LE-8 VIN W
TSM1975Truck454215AutomaticLS-4 VIN Z, L,
TSM1977Truck454250LE-8 VIN W
TSR1977Truck454250LE-8 VIN W
TSS1978Truck454250LE-8 VIN W
TST1978Truck454250LE-8 VIN W
TSU1978Truck454250AutomaticLE-8 VIN W
TTZ1970Truck427260L-43
TXA1989Truck454230L-19 TBI VIN N,
TXB1989Truck454230L-19 TBI VIN N,
TXF1989Truck454230L-19 TBI VIN N,
TZB1985Truck454240LE-8 VIN W
TZC1985Truck454240LE-8 VIN W
TZD1985Truck454240LE-8 VIN W
TZF1985Truck454240LE-8 VIN W
TZG1985Truck454240LE-8 VIN W
TZH1985Truck454240LE-8 VIN W
TZJ1985Truck454240LE-8 VIN W
TZK1985Truck454240LE-8 VIN W
TZL1985Marine454240LE-8
TZM1985Truck454240LE-8 VIN W
U1958Truck348230
U1959Truck348230
U2C1989Truck454230L-19 TBI VIN N,
U2D1989Truck454230L-19 TBI VIN N,
U2J1989Truck454230L-19 TBI VIN N,
U2K1989Truck454230L-19 TBI VIN N,
U2L1989Truck454230L-19 TBI VIN N,
U2W1989Truck454230L-19 TBI VIN N,
U2Z1989Truck454230L-19 TBI VIN N,
UA1958Truck348230
UA1959Truck348230
UBA1983Truck454230LE-8 VIN W
UBB1983Truck454230LE-8 VIN W
UBC1983Truck454230LE-8 VIN W
UBD1983Truck454230LE-8 VIN W
UBF1983Truck454230LE-8 VIN W
UBH1983Truck454230LE-8 VIN W
UCA1981Truck454210LE-8 VIN W
UCB1981Truck454210LE-8 VIN W
UCH1993Truck454230L-19 TBI VIN N
UCJ1993Truck454230L-19 TBI VIN N
UCK1993Truck454230L-19 TBI VIN N
UCL1993Truck454230L-19 TBI VIN N
UCN1993Truck454230L-19 TBI VIN N
UCS1993Truck454230L-19 TBI VIN N
UCT1993Truck454230L-19 TBI VIN N
UDL1993Truck454230L-19 TBI VIN N
UPH1993Truck454230L-19 TBI VIN N, fwd
UPJ1993Truck454230L-19 TBI VIN N
UPK1993Truck454230L-19 TBI VIN N, fwd
XE1968Truck396310L-66
XF1968Truck396310L-66
XG1968Truck396310L-66
XH1968Truck396310L-66
XK1968Truck396275L-66, 2-Barrel
XL1968Truck396275L-66, 2-Barrel
XM1968Truck396275L-66, 2-Barrel
XN1968Truck396275ManualL-66, 2-Barrel
YM1965Truck348220
YO1965Truck348220
YP1965Truck348220
YP1969Truck396310L-66
YQ1965Truck348220
YQ1969Truck396310L-66
YR1969Truck396310L-66
YS1969Truck396310L-66
YT1969Truck427260L-43
YU1969Truck427260L-43
YV1969Truck427260L-43
YW1969Truck427260L-43

 

Block Casting Number

The casting number consists of 6, 7, or 8 digits without any letters. Any letters cast near the 6,7 or 8 digit number are not part of the Casting number. The Block Casting Number designates veries information of the block such as the displacement, the year of production, 2 or 4 bolt main, and also vehicle application.

Chevrolet Big Block Casting Number Location

The Block Casting Number is located at the back ledge of the block behind the driver-side cylinder head. However, on some later production blocks, the casting number may be located on the passenger side ledge.

Chevrolet Big Block Casting Numbers

Casting No.DisplacementYearNoteMainDeckHP Rating
34022042772-76Truck4-boltTall
34501445474-86Truck
34623645474-762-Bolt215
35907045474-90Truck
36195945473-85Car & Truck2 or 4-Bolt
36477642768-84Truck4-BoltTall
36477936668-88Truck4-BoltTall
39920450970-71Aluminum Can-AM4-Bolt
39928945473-792-bolt
39929336677-78Truck4-Bolt
47347842768-84Truck4-BoltTall
101418336691-924-boltTall
140154445475-87Truck
373275534859-61
373281134858
375187234858
375501134859-61
377170534859-61
378201234858-61
378287042768-76Truck4-BoltTall
378806840962
379562340961
379896234862-65Truck
381570734858-61
382455336666-67Truck
383081440963
383975240962-63
383975440965
384442240964
385506139665-67
385596139666-672-bolt325 and 360
385596239665-664-Bolt360, 375, and 425
385597736665-67Truck4-BoltTall
385765534862-65Truck
385765640965
386038640962-64
386038734858
386696139666-69Truck
386994242766-672 or 4-Bolt390 and 425
3873858396664-Bolt375
3902406396672 or 4-Bolt325, 350, and 375
390246639665-67
3904351427672 or 4-Bolt385, 390, 400, 425, 430,and 435
390435436666-67Truck4-BoltTall
391631936668-85Truck4-BoltTall
3916321427682 or 4-Bolt385, 390, 400, 425, 430, and 435
3916323396682 or 4-Bolt325, 350, and 375
391831936666-70TruckTall
392552136668-85Truck4-BoltTall
392831936669-73TruckTall
393543942768-692 or 4-Bolt335, 390, 400, 425, 430, and 435
393544039668-692 or 4-Bolt265, 325, 350, and 375
393772436668-85Truck4-BoltTall
393772642768-84Truck4-BoltTall
394605242769ZL-1, aluminum Mark IV4-Bolt430
394605342797ZL-I Aluminum4-Bolt
3955270427692 or 4-Bolt335, 390, 400, 425, 430, and 435
3955272396692 or 4-Bolt325, 350, and 375
395527436668-85Truck4-BoltTall
395527642768-84Truck4-BoltTall
396351242769-71COPO2 or 4-Bolt360, 375, 425, and 460
396351345473-76215
396544039668-69
396544939668-72
396554039668
396885236668-85HD
396885439668-69Light Duty
396985236668-84Truck4-Bolt
3969854396692 or 4-Bolt240, 265, 300, 325, 330, 350, and 375
396985440270-722 or 4-Bolt240, 265, 300, 325, 330, 350, and 375
396985842768-84Truck4-BoltTall
399562340961
399928945472-78Car & Truck2-BoltTall215, 235, 240 and  270
3999290402722-Bolt240
399929336668-85Truck4-BoltTall
399929442768-84Truck4-BoltTall
627217636668-76TruckTall
6272177402722-bolt210
627218142773-76TruckTall
1006828645490-91Mark IV4-BoltShort
1011418245491-954-BoltTall
1011418336691-95Truck Gen V4-Bolt
1011418442791-95Truck Gen V4-Bolt
1023729745496-upVortex L-294-Bolt
1023730050296-up4-Bolt
1255031242796-up4-Bolt
1255031345491-up4-Bolt
1255611049601-upTruck Vortex Gen VII4-Bolt
1401544345487-90Truck Mark IV4-Bolt
1401544545475-90Car & Truck2 or 4-Bolt
1401554345487-904-Bolt

Chevy Big Block Date Code

The Engine Block Date Code indicates the month, date, and year the engine block was cast. The Date Code does not indicate the day the engine was assembled. The engine assembly date is indicated in the Engine Code located in the front of the block.

Engine Block Date Code Location

On most big Blocks the Date code is located at the back ledge of the block behind the passenger side cylinder head. Some earlier production blocks from the 60s have the Date code cast on the passenger side of the block near the freeze plug. And, on some later blocks, the Date code may be found on the driver side ledge.

 

Decoding the Block Date Code

The code consists of 3 or 4 digits. The first digit is a letter that represents the month. The next 1 or 2 numerical digits represent the date, and the last number is the year.

Example:  A17 = January 1, 1967.
Example:  B117 = February 11, 1977.
Example:  D137 = April 13, 1987.

Note: For the year, more info is needed as the 7 can mean 67, 77, 87, or 97.

Cast Date Month Code

A = January
B = February
C = March
D = April
E =May
F = June
G = July
H = August
I = September
J = November
K = December

 

Chevrolet Big Block Engine Identification –  A Quick ways to visually identifying a Chevy Big Block Series

W-Series 348, 409, and 427 Cubic Inch Engines 1958 to 1965

Mark IV Series 366, 396, 402, 427, and 454 Cubic Inch Engines 1965 to 1990

Generation V 366, 454, 502, and 572 Cubic Inch Engines 1991 to  1995

 

409 with W shape Valve covers

Chevrolet Big Block Engine Identification – 409 with W shape Valve covers

 

The W-Series Chevrolet engines have W shape valve covers.

Chevrolet Big Block Mark IV 427 Cubic Inch Engine

Chevrolet Big Block Engine Identification – Mark IV 427 with rectangular valve covers

The Mark IV and Generation V have rectangular valve covers.

Mark IV blocks have a mechanical fuel pump mounting pad the Gen V does not.

 

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