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

Chevrolet Big Block

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

Chevrolet Big Block Engine Identification using casting numbers, date codes, partial VIN numbers, and engine suffix codes. These numbers and codes can help determine the engine’s displacement, horsepower rating, original application, assembly plant, and production date.

This guide explains where to locate Chevrolet Big Block casting numbers, date codes, and engine suffix codes, and how to use them to identify popular Chevrolet Big Block engines including the 396, 402, 427, and 454.

Chevrolet Big Block Engine Identification

Chevrolet Big Block Partial VIN Number.

The partial VIN number can help verify whether a Chevrolet Big Block engine is original to a specific vehicle. Beginning in 1968, Chevrolet stamped a partial VIN on most production engines. This number identifies the GM division, model year, assembly plant, and the vehicle the engine was originally installed in.

Chevrolet Big Block Partial VIN Number Location

The Chevrolet Big Block partial VIN is typically stamped on the machined pad located at the front passenger side of the engine block, just below the cylinder head. On some truck and marine applications, the VIN may be stamped on a flat pad above the timing cover. This stamped number can be used to verify whether the engine is original to a specific vehicle.

The stamped VIN can help verify whether the engine is original to a specific vehicle. The 1st digit identifies the GM division, the 2nd digit represents the model year, and the 3rd digit identifies the vehicle assembly plant. The final 6 digits match the last 6 digits of the vehicle VIN that the engine was originally installed in.

Decoding the VIN Number

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

Example: VIN 19F123456

1 = Chevrolet Division
9 = 1969 Model Year
F = Flint, Michigan Assembly Plant
123456 = Matches the last 6 digits of the vehicle VIN

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 Identification Code.

The Chevrolet Big Block engine code provides information about where and when the engine was assembled, along with the engine suffix code that identifies the original vehicle application. When combined with the casting number and partial VIN, the engine code can help accurately identify a Chevrolet Big Block engine.

Chevrolet Big Block Engine Code Location.

The Chevrolet Big Block engine code is stamped on a machined pad located on the front passenger side of the engine block. This pad typically contains both the engine assembly code and the partial VIN, making it one of the most important locations for identifying a Chevrolet Big Block engine. 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 engine code identifies the assembly plant. The 2nd and 3rd digits represent the month, and the 4th and 5th digits represent the day of assembly. The final 2 or 3 characters are the engine suffix code, which identifies the original vehicle application and engine configuration.

Example: T0525ED

T = Tonawanda Engine Plant
05 = May
25 = 25th Day of Assembly
ED = Chevelle with Manual Transmission

Engine Assembly Plant Code

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

Chevrolet Big Block Engine Suffix Codes.

Code	Year	Application	Size	HP	Trans	Notes
0FC	1990	Marine	502	380		LX-2, 4-Bolt Main
0FD	1990	Marine	502	380		LX-2, 4-Bolt Main
0FF	1990	Marine	502	380		LX-2, 4-Bolt Main
0FH	1990	Marine	502	380		LX-2, 4-Bolt Main
0FJ	1990	Marine	502	380		LX-2, 4-Bolt Main
0XA	1990	Marine	454	370		L-9 4-Bolt Main
0XB	1980	Marine	454	225		LE-8
0XC	1980	Marine	454	225		LE-8
0XC	1990	Marine	454	370		L-9 4-Bolt Main
0XD	1990	Marine	454	310		L-9 4-Bolt Main
0XF	1980	Marine	454	225		LE-8
0XF	1990	Marine	454	370		L-9 4-Bolt Main
0XG	1990	Marine	454	310		L-9 4-Bolt Main
0XH	1980	Marine	454	225		LE-8
0XH	1990	Marine	454	370		L-19, 4-Bolt Main, Jet Drive
0XJ	1980	Marine	454	225		LE-8
0XJ	1990	Marine	454	310		L-9 4-Bolt Main
0XK	1980	Marine	454	225		LE-8
0XK	1990	Marine	454	310		L-19, 4-Bolt Main, Jet Drive
0XN	1980	Marine	454	225		LE-8
0XN	1990	Marine	454	310		L-9 4-Bolt Main
0XR	1980	Marine	454	225		LE-8
0XR	1990	Marine	454	310		L-9 4-Bolt Main
0XS	1980	Marine	454	225		LE-8
0XS	1990	Marine	454	310		L-9 4-Bolt Main
0XT	1990	Marine	454	310		L-9 4-Bolt Main
0XU	1980	Marine	454	225		LE-8
0XU	1990	Marine	454	310		L-9 4-Bolt Main
0XW	1990	Marine	454	310		L-9 4-Bolt Main
0XY	1980	Marine	454	225		LE-8
0XY	1990	Marine	454	310		L-9 4-Bolt Main
0XZ	1980	Marine	454	225		LE-8
0XZ	1990	Marine	454	310		L-9 4-Bolt Main
0ZA	1980	Marine	427	220		L-43
0ZB	1980	Marine	427	220		L-43
1FC	1991	Marine	502	380		LX-2, 4-Bolt Main
1FD	1991	Marine	502	380		LX-2, 4-Bolt Main
1FF	1991	Marine	502	380		LX-2, 4-Bolt Main
1FH	1991	Marine	502	380		LX-2, 4-Bolt Main
1FJ	1991	Marine	502	380		LX-2, 4-Bolt Main
1XA	1991	Marine	454	370		L-9 4-Bolt Main
1XB	1981	Marine	454	210		LE-8
1XC	1981	Marine	454	210		LE-8
1XC	1991	Marine	454	370		L-9 4-Bolt Main
1XD	1991	Marine	454	310		L-9 4-Bolt Main
1XF	1981	Marine	454	210		LE-8
1XF	1991	Marine	454	370		L-9 4-Bolt Main
1XG	1991	Marine	454	310		L-9 4-Bolt Main
1XH	1981	Marine	454	210		LE-8
1XH	1991	Marine	454	370		L-19, 4-Bolt Main, Jet Drive
1XJ	1981	Marine	454	210		LE-8
1XJ	1991	Marine	454	280		L-9 4-Bolt Main
1XK	1981	Marine	454	210		LE-8
1XK	1991	Marine	454	310		L-19, 4-Bolt Main, Jet Drive
1XN	1981	Marine	454	210		LE-8
1XN	1991	Marine	454	310		L-9 4-Bolt Main
1XR	1981	Marine	454	210		LE-8
1XR	1991	Marine	454	310		L-9 4-Bolt Main
1XS	1981	Marine	454	210		LE-8
1XS	1991	Marine	454	310		L-9 4-Bolt Main
1XT	1981	Marine	454	210		LE-8
1XT	1991	Marine	454	310		L-19, 4-Bolt Main
1XU	1991	Marine	454	310		L-19, 4-Bolt Main
1XW	1991	Marine	454	310		L-9 4-Bolt Main
1XY	1981	Marine	454	210		LE-8
1XY	1991	Marine	454	310		L-9 4-Bolt Main
1XZ	1981	Marine	454	210		LE-8
1XZ	1991	Marine	454	310		L-9 4-Bolt Main
1ZA	1981	Marine	427	220		L-43
1ZB	1981	Marine	427	220		L-43
2FC	1992	Marine	502	380		LX-2, 4-Bolt Main
2FD	1992	Marine	502	380		LX-2, 4-Bolt Main
2FF	1992	Marine	502	380		LX-2, 4-Bolt Main
2FH	1992	Marine	502	380		LX-2, 4-Bolt Main
2FJ	1992	Marine	502	380		LX-2, 4-Bolt Main
2XA	1992	Marine	454	370		L-9 4-Bolt Main
2XB	1982	Marine	454	210		LE-8
2XC	1982	Marine	454	210		LE-8
2XC	1992	Marine	454	370		L-9 4-Bolt Main
2XD	1992	Marine	454	310		L-9 4-Bolt Main
2XF	1982	Marine	454	210		LE-8
2XF	1992	Marine	454	370		L-9 4-Bolt Main
2XG	1992	Marine	454	310		L-9 4-Bolt Main
2XH	1982	Marine	454	210		LE-8
2XH	1992	Marine	454	370		L-19, 4-Bolt Main, Jet Drive
2XJ	1982	Marine	454	210		LE-8
2XJ	1992	Marine	454	280		L-9 4-Bolt Main
2XK	1982	Marine	454	210		LE-8
2XK	1992	Marine	454	310		L-19, 4-Bolt Main, Jet Drive
2XN	1982	Marine	454	210		LE-8
2XN	1992	Marine	454	310		L-9 4-Bolt Main
2XR	1982	Marine	454	210		LE-8
2XR	1992	Marine	454	310		L-9 4-Bolt Main
2XS	1982	Marine	454	210		LE-8
2XS	1992	Marine	454	310		L-9 4-Bolt Main
2XT	1982	Marine	454	210		LE-8
2XT	1992	Marine	454	310		L-9 4-Bolt Main
2XU	1992	Marine	454	310		L-9 4-Bolt Main
2XW	1992	Marine	454	310		L-9 4-Bolt Main
2XY	1982	Marine	454	210		LE-8
2XY	1992	Marine	454	310		L-9 4-Bolt Main
2XZ	1982	Marine	454	210		LE-8
2XZ	1992	Marine	454	310		L-9 4-Bolt Main
2ZA	1982	Marine	427	220		L-43
2ZB	1982	Marine	427	220		L-43
2ZC	1982	Marine	427	220		L-43
3FC	1993	Marine	502	380		LX-2, 4-Bolt Main
3FD	1993	Marine	502	380		LX-2, 4-Bolt Main
3FF	1993	Marine	502	380		LX-2, 4-Bolt Main
3FH	1993	Marine	502	380		LX-2, 4-Bolt Main
3FJ	1993	Marine	502	380		LX-2, 4-Bolt Main
3HC	1993	Marine	502	380		LX-2, 4-Bolt Main
3HD	1993	Marine	502	380		LX-2, 4-Bolt Main
3HH	1993	Marine	502	380		LX-2, 4-Bolt Main
3HJ	1993	Marine	502	380		LX-2, 4-Bolt Main
3UA	1993	Marine	454	370		L-9 4-Bolt Main
3UB	1993	Marine	454	310		L-9 4-Bolt Main
3UF	1993	Marine	454	370		L-9 4-Bolt Main
3UH	1993	Marine	454	370		L-19, 4-Bolt Main, Jet Drive
3XA	1993	Marine	454	370		L-9 4-Bolt Main
3XB	1983	Marine	454	230		LE-8
3XC	1983	Marine	454	230		LE-8
3XC	1993	Marine	454	370		L-9 4-Bolt Main
3XD	1983	Marine	454	230		LE-8
3XF	1983	Marine	454	230		LE-8
3XF	1993	Marine	454	370		L-9 4-Bolt Main
3XH	1983	Marine	454	230		LE-8
3XH	1993	Marine	454	370		L-19, 4-Bolt Main, Jet Drive
3XJ	1983	Marine	454	230		LE-8
3XK	1983	Marine	454	230		LE-8
3XK	1993	Marine	454	310		L-19, 4-Bolt Main, Jet Drive
3XN	1983	Marine	454	230		LE-8
3XN	1993	Marine	454	310		L-9 4-Bolt Main
3XR	1983	Marine	454	230		LE-8
3XR	1993	Marine	454	310		L-9 4-Bolt Main
3XS	1983	Marine	454	230		LE-8
3XS	1993	Marine	454	310		L-9 4-Bolt Main
3XT	1983	Marine	454	230		LE-8
3XW	1993	Marine	454	310		L-9 4-Bolt Main
3XX	1993	Marine	454	310		L-9 4-Bolt Main
3XY	1983	Marine	454	230		LE-8
3XY	1993	Marine	454	310		L-9 4-Bolt Main
3XZ	1983	Marine	454	230		LE-8
3YD	1993	Marine	454	280		L-9 4-Bolt Main
3YJ	1993	Marine	454	280		L-9 4-Bolt Main
3YT	1993	Marine	454	280		L-9 4-Bolt Main
3YU	1993	Marine	454	280		L-9 4-Bolt Main
3YZ	1993	Marine	454	280		L-9 4-Bolt Main
4FC	1994	Marine	502	380		LX-2, 4-Bolt Main
4FD	1994	Marine	502	380		LX-2, 4-Bolt Main
4FF	1994	Marine	502	380		LX-2, 4-Bolt Main
4FH	1994	Marine	502	380		LX-2, 4-Bolt Main
4FJ	1994	Marine	502	380		LX-2, 4-Bolt Main
4HC	1994	Marine	502	380		LX-2, 4-Bolt Main
4HD	1994	Marine	502	380		LX-2, 4-Bolt Main
4HH	1994	Marine	502	380		LX-2, 4-Bolt Main
4HJ	1994	Marine	502	380		LX-2, 4-Bolt Main
4T	1968	Chevelle	396	325	Manual
4U	1968	Chevelle	396	350	Manual
4UA	1994	Marine	454	370		L-9 4-Bolt Main
4UB	1994	Marine	454	310		L-9 4-Bolt Main
4UF	1994	Marine	454	370		L-9 4-Bolt Main
4UH	1994	Marine	454	370		L-19, 4-Bolt Main, Jet Drive
4W	1968	Chevelle	396	350		Automatic
4XA	1994	Marine	454	370		L-9 4-Bolt Main
4XB	1984	Marine	454	230		LE-8
4XC	1984	Marine	454	230		LE-8
4XC	1994	Marine	454	370		L-9 4-Bolt Main
4XD	1984	Marine	454	230		LE-8
4XF	1984	Marine	454	230		LE-8
4XF	1994	Marine	454	370		L-9 4-Bolt Main
4XH	1984	Marine	454	230		LE-8
4XH	1994	Marine	454	370		L-19, 4-Bolt Main, Jet Drive
4XJ	1984	Marine	454	230		LE-8
4XK	1984	Marine	454	230		LE-8
4XK	1994	Marine	454	310		L-19, 4-Bolt Main, Jet Drive
4XL	1984	Marine	454	230		LE-8
4XM	1984	Marine	454	230		LE-8
4XN	1984	Marine	454	230		LE-8
4XN	1994	Marine	454	310		L-9 4-Bolt Main
4XR	1984	Marine	454	230		LE-8
4XR	1994	Marine	454	310		L-9 4-Bolt Main
4XS	1984	Marine	454	230		LE-8
4XS	1994	Marine	454	310		L-9 4-Bolt Main
4XT	1984	Marine	454	230		LE-8
4XU	1984	Marine	454	230		LE-8
4XW	1994	Marine	454	310		L-9 4-Bolt Main
4XX	1994	Marine	454	310		L-9 4-Bolt Main
4XY	1984	Marine	454	230		LE-8
4XY	1994	Marine	454	310		L-9 4-Bolt Main
4XZ	1984	Marine	454	230		LE-8
4YD	1994	Marine	454	280		L-9 4-Bolt Main
4YJ	1994	Marine	454	280		L-9 4-Bolt Main
4YT	1994	Marine	454	280		L-9 4-Bolt Main
4YU	1994	Marine	454	280		L-9 4-Bolt Main
4YZ	1994	Marine	454	280		L-9 4-Bolt Main
5XB	1975	Marine	454	215		LS-4
5XB	1985	Marine	454	240		LE-8
5XC	1975	Marine	454	215		LS-4
5XC	1985	Marine	454	240		LE-8
5XD	1975	Marine	454	215		LS-4
5XD	1985	Marine	454	240		LE-8
5XF	1985	Marine	454	240		LE-8
5XH	1985	Marine	454	240		LE-8
5XI	1985	Marine	454	240		LE-8
5XK	1985	Marine	454	240		LE-8
5XM	1985	Marine	454	240		LE-8
5XN	1985	Marine	454	240		LE-8
5XR	1985	Marine	454	240		LE-8
5XS	1985	Marine	454	240		LE-8
5XT	1985	Marine	454	240		LE-8
5XU	1985	Marine	454	240		LE-8
5XY	1985	Marine	454	240		LE-8
5XZ	1985	Marine	454	240		LE-8
6HF	1986	Marine	454	240		LE-8
6HH	1986	Marine	454	240		LE-8
6XB	1976	Marine	454	215		LS-4
6XB	1986	Marine	454	240		LE-8
6XC	1976	Marine	454	215		LS-4
6XC	1986	Marine	454	240		LE-8
6XD	1976	Marine	454	215		LS-4
6XD	1986	Marine	454	240		LE-8
6XF	1976	Marine	454	215		LS-4
6XF	1986	Marine	454	240		LE-8
6XH	1976	Marine	454	215		LS-4
6XH	1986	Marine	454	240		LE-8
6XJ	1976	Marine	454	215		LS-4
6XJ	1986	Marine	454	240		LE-8
6XK	1976	Marine	454	215		LS-4
6XK	1986	Marine	454	240		LE-8
6XL	1986	Marine	454	240		LE-8
6XM	1986	Marine	454	240		LE-8
6XN	1986	Marine	454	240		LE-8
6XR	1986	Marine	454	240		LE-8
6XS	1986	Marine	454	240		LE-8
6XT	1986	Marine	454	240		LE-8
6XU	1986	Marine	454	240		LE-8
6XY	1986	Marine	454	240		LE-8
6XZ	1986	Marine	454	240		LE-8
7XA	1987	Marine	454	240		LE-8
7XB	1977	Marine	454	250		LF-8
7XC	1977	Marine	454	250		LF-8
7XD	1987	Marine	454	240		LE-8
7XF	1977	Marine	454	250		LF-8
7XF	1987	Marine	454	240		LE-8 , 4-Bolt Main
7XH	1977	Marine	454	250		LF-8
7XH	1987	Marine	454	240		LE-8, 4-Bolt Main Jet Drive
7XJ	1977	Marine	454	250		LF-8
7XJ	1987	Marine	454	240		LE-8
7XK	1977	Marine	454	250		LF-8
7XK	1987	Marine	454	240		LE-8, 2-Bolt Main, Jet Drive
7XL	1987	Marine	454	240		LE-8
7XM	1977	Marine	454	250		LF-8
7XN	1977	Marine	454	250		LF-8
7XN	1987	Marine	454	240		LE-8 , 2-Bolt Main
7XP	1987	Marine	454	240		LE-8 , 4-Bolt Main
7XR	1977	Marine	454	250		LF-8
7XR	1987	Marine	454	240		LE-8 , 2-Bolt Main
7XS	1977	Marine	454	250		LF-8
7XS	1987	Marine	454	240		LE-8 , 2-Bolt Main
7XT	1977	Marine	454	250		LF-8
7XT	1987	Marine	454	240		LE-8
7XU	1987	Marine	454	240		LE-8
7XX	1987	Marine	454	310		L-9 4-Bolt Main
7XY	1987	Marine	454	240		LE-8, 2- Bolt Main Inboard
7XZ	1987	Marine	454	240		LE-8, 2- Bolt Main Inboard
8FA	1988	Marine	502	380		LX-2
8FB	1988	Marine	502	380		LX-2
8FC	1988	Marine	502	380		LX-2
8XA	1988	Marine	454	310		L-19
8XB	1978	Marine	454	250		LF-8
8XC	1978	Marine	454	250		LF-8
8XD	1988	Marine	454	310		L-19
8XF	1978	Marine	454	250		LF-8
8XF	1988	Marine	454	310		L-9 4-Bolt Main
8XH	1978	Marine	454	250		LF-8
8XH	1988	Marine	454	310		L-19, 4-Bolt Main, Jet Drive
8XJ	1978	Marine	454	250		LF-8
8XJ	1988	Marine	454	310		L-19
8XK	1978	Marine	454	250		LF-8
8XK	1988	Marine	454	310		L19 2-Bolt Main
8XL	1988	Marine	454	310		L-19
8XM	1978	Marine	454	250		LF-8
8XN	1978	Marine	454	250		LF-8
8XN	1988	Marine	454	310		L19 2-Bolt Main
8XP	1988	Marine	454	310		L-9 4-Bolt Main
8XR	1978	Marine	454	250		LF-8
8XR	1988	Marine	454	310		L19 2-Bolt Main
8XS	1978	Marine	454	250		LF-8
8XS	1988	Marine	454	310		L19 2-Bolt Main
8XT	1978	Marine	454	250		LF-8
8XT	1988	Marine	454	310		L-19
8XU	1988	Marine	454	310		L-19
8XX	1988	Marine	454	310		L-9 4-Bolt Main
8XY	1988	Marine	454	310		L19 2-Bolt Main
8XZ	1988	Marine	454	310		L19 2-Bolt Main
8ZA	1979	Marine	427	220		L-43
9FA	1989	Marine	502	380		LX-2
9FB	1989	Marine	502	380		LX-2
9FC	1989	Marine	502	310		LX-2
9XA	1989	Marine	454	310		L-19
9XB	1979	Marine	454	245		LF-8
9XC	1979	Marine	454	245		LF-8
9XD	1989	Marine	454	310		L-19
9XF	1979	Marine	454	245		LF-8
9XF	1989	Marine	454	310		L-9 4-Bolt Main
9XH	1979	Marine	454	245		LF-8
9XH	1989	Marine	454	310		L-19, 4-Bolt Main, Jet Drive
9XJ	1979	Marine	454	245		LF-8
9XJ	1989	Marine	454	310		L-19
9XK	1979	Marine	454	245		LF-8
9XK	1989	Marine	454	310		L19, 2-Bolt Main, Jet Drive
9XL	1989	Marine	454	310		L-19
9XM	1979	Marine	454	245		LF-8
9XN	1979	Marine	454	245		LF-8
9XN	1989	Marine	454	310		L19 2-Bolt Main
9XP	1989	Marine	454	310		L-9 4-Bolt Main
9XR	1979	Marine	454	245		LF-8
9XR	1989	Marine	454	310		L19 2-Bolt Main
9XS	1979	Marine	454	245		LF-8
9XS	1989	Marine	454	310		L19 2-Bolt Main
9XT	1979	Marine	454	245		LF-8
9XT	1989	Marine	454	310		L-19
9XU	1989	Marine	454	310		L-19
9XX	1989	Marine	454	310		L-9 4-Bolt Main
9XY	1989	Marine	454	310		L19 2-Bolt Main
9XZ	1989	Marine	454	310		L19 2-Bolt Main
AAA	1973	Truck	366	200	Manual	L-86
AAS	1973	Truck	427	230	Manual	L-43
ACA	1984	Marine	427	220	.	L-43
ACB	1984	Marine	427	220	.	L-43
ACF	1984	Marine	427	220	.	L-43
ADA	1983	Marine	427	220	.	L-43
ADB	1983	Marine	427	220	.	L-43
ADC	1983	Marine	427	220	.	L-43
ADS	1973	Truck	366	200	Manual	L-86
ADU	1973	Truck	366	200	540	L-86
ADV	1973	Truck	366	200	Automatic	L-86
ADW	1973	Truck	366	200	Manual	L-86
ADX	1973	Truck	366	200	540	L-86
ADZ	1973	Truck	427	230	Manual	L-43
AEA	1973	Truck	427	230	Manual	L-43
AFA	1976	Truck	366	200	Manual	L-86
AFD	1977	Truck	366	200	Manual	L-86
AFF	1977	Truck	366	200	540	L-86
AFH	1977	Truck	366	200	Manual	L-86
AFJ	1977	Truck	366	200	540	L-86
AFK	1978	Marine	427	220	Manual	L-43
AFL	1977	Truck	366	200	Manual	L-86
AFM	1978	Truck	366	200	Manual	L-86
AFR	1978	Truck	366	200	Manual	L-86
AFS	1976	Truck	366	200	540	L-86
AFT	1973	Truck	366	200	Manual	L-86
AFT	1974	Truck	366	200	Manual	L-86
AFU	1973	Truck	366	200	Manual	L-86
AFU	1974	Truck	366	200	Manual	L-86
AFU	1978	Truck	366	200	Manual	L-86
AHA	1974	Truck	366	200	Manual	L-86
AHA	1979	Truck	366	190	Manual	L-86 VIN B
AHC	1979	Truck	366	190	Manual	L-86 VIN B
AHD	1975	Truck	366	200	Manual	L-86
AHD	1976	Truck	366	200	Manual	L-86
AHH	1975	Truck	366	200	Manual	L-86
AHH	1976	Truck	366	200	Manual	L-86
AHH	1977	Truck	366	200	650	L-86
AHH	1979	Truck	366	190	Manual	L-86 VIN B
AHJ	1975	Truck	366	200	540	L-86
AHJ	1976	Truck	366	200	540	L-86
AHJ	1978	Truck	366	200	Manual	L-86
AHK	1973	Truck	366	200	Manual	L-86
AHK	1974	Truck	366	200	Manual	L-86
AHL	1975	Truck	366	200	Automatic	L-86
AHL	1976	Truck	366	200	Automatic	L-86
AHL	1979	Truck	366	190	Manual	L-86 VIN B
AHM	1973	Truck	366	200	540	L-86
AHM	1974	Truck	366	200	540	L-86
AHN	1973	Truck	366	200	Manual	L-86
AHR	1973	Truck	366	200	540	L-86
AHR	1974	Truck	366	200	540	L-86
AHR	1978	Truck	366	200	Manual	L-86
AHS	1973	Truck	366	200	Manual	L-86
AHS	1974	Truck	366	200	Automatic	L-86
AHS	1978	Truck	366	200	Manual	L-86
AHS	1979	Truck	366	190	Manual	L-86 VIN B
AHT	1973	Truck	427	230	Manual	L-43
AHT	1978	Truck	366	200	Manual	L-86
AHU	1973	Truck	427	230	Manual	L-43
AHU	1975	Truck	366	200	Manual	L-86
AHU	1976	Truck	366	200	Manual	L-86
AHU	1977	Truck	366	200	Manual	L-86
AHW	1973	Truck	427	230	Manual	L-43
AHW	1975	Truck	366	200	540	L-86
AHW	1976	Truck	366	200	540	L-86
AHW	1977	Truck	366	200	540	L-86
AHX	1975	Truck	366	200	Manual	L-86
AHX	1976	Truck	366	200	Manual	L-86
AHX	1977	Truck	366	200	Manual	L-86
AHY	1975	Truck	366	200	Manual	L-86
AHY	1976	Truck	366	200	Manual	L-86
AHY	1977	Truck	366	200	Manual	L-86
AHZ	1975	Truck	366	200	540	L-86
AHZ	1976	Truck	366	200	540	L-86
AHZ	1977	Truck	366	200	540	L-86
AJA	1977	Truck	427	220	540	L-43
AJB	1973	Truck	366	200	Automatic	L-86
AKA	1975	Truck	427	220	Manual	L-43
AKA	1976	Marine	427	260	.	L-43
AKA	1977	Marine	427	260	.	L-43
AKA	1979	Truck	427	220	Manual	L-43 VIN E
AKA	1985	Truck	454	240	Manual	LE-8 VIN W
AKB	1975	Truck	427	220	.	L-43
AKB	1975	Marine	427	260	.	L-43
AKB	1976	Truck	427	220	.	L-43
AKB	1976	Marine	427	260	.	L-43
AKB	1977	Truck	427	220	.	L-43
AKB	1977	Marine	427	260	.	L-43
AKB	1979	Truck	427	220	Manual	L-43 VIN E
AKB	1985	Truck	454	240	Manual	LE-8 VIN W
AKC	1975	Truck	427	220	.	L-43
AKC	1975	Marine	427	260	.	L-43
AKC	1976	Truck	427	220	Manual	L-43
AKC	1977	Truck	427	220	Manual	L-43
AKC	1979	Truck	427	220	Manual	L-43 VIN E
AKC	1985	Truck	454	240	Manual	LE-8 VIN W
AKD	1975	Truck	427	220	Manual	L-43
AKD	1976	Truck	427	220	Manual	L-43
AKD	1977	Truck	427	220	Manual	L-43
AKD	1979	Truck, Marine	427	220	.	L-43 VIN E
AKD	1985	Truck	454	240	Manual	LE-8 VIN W
AKF	1978	Truck	427	220	Manual	L-43 VIN E
AKF	1985	Truck	454	240	Manual	LE-8 VIN W
AKH	1975	Truck	427	220	Manual	L-43
AKH	1976	Truck	427	220	Manual	L-43
AKH	1977	Truck	427	220	Manual	L-43
AKH	1979	Truck	427	220	Manual	L-43 VIN E
AKJ	1975	Truck	427	220	Manual	L-43
AKJ	1976	Truck	427	220	Manual	L-43
AKJ	1977	Truck	427	220	Manual	L-43
AKJ	1979	Truck	427	220	Manual	L-43 VIN E
AKJ	1985	Truck	454	240	Manual	LE-8 VIN W
AKK	1976	Truck	366	200	Manual	L-86
AKK	1978	Truck, Marine	427	220	.	L-43 VIN E
AKK	1985	Truck	454	240	Manual	LE-8 VIN W
AKL	1976	Truck	366	200	540	L-86
AKL	1977	Truck	366	200	540	L-86
AKM	1976	Truck	366	200	Manual	L-86
AKM	1977	Truck	366	200	Manual	L-86
AKM	1979	Truck	427	220	Automatic	L-43 VIN E
AKM	1985	Truck	454	240	Manual	LE-8 VIN W
AKN	1985	Truck	454	240	Manual	LE-8 VIN W
AKR	1976	Truck	366	200	540	L-86
AKR	1977	Truck	366	200	540	L-86
AKR	1985	Truck, Marine	454	240	.	LE-8 VIN W
AKS	1976	Truck	427	220	Manual	L-43
AKS	1977	Truck	427	220	Manual	L-43
AKS	1986	Marine	454	240	.	LE-8
AKT	1974	Truck	427	230	Manual	L-43
AKT	1978	Truck	427	220	Manual	L-43 VIN E
AKT	1986	Truck	454	240	Manual	LE-8 VIN W
AKU	1974	Truck	427	230	Manual	L-43
AKU	1978	Truck	427	220	Manual	L-43 VIN E
AKU	1986	Marine	454	240	.	LE-8
AKW	1974	Truck	427	230	Manual	L-43
AKW	1986	Truck	454	240	Manual	LE-8 VIN W
AKX	1976	Truck	427	220	Manual	L-43
AKX	1977	Truck	427	220	Manual	L-43
AKX	1986	Truck	454	240	Manual	LE-8 VIN W
AKY	1986	Truck	454	240	Manual	LE-8 VIN W
AKZ	1986	Truck	454	240	Manual	LE-8 VIN W
ALA	1977	Truck	427	220	540	L-43
ALA	1986	Truck	454	240	Manual	LE-8 VIN W
ALB	1977	Truck	427	220	540	L-43
ALB	1980	Marine	427	220	.	L-43
ALB	1986	Truck	454	240	Manual	LE-8 VIN W
ALC	1977	Truck	427	220	540	L-43
ALC	1986	Truck	454	240	Manual	LE-8 VIN W
ALD	1977	Truck	427	220	540	L-43
ALD	1986	Truck	454	240	Manual	LE-8 VIN W
ALF	1977	Truck	427	220	Manual	L-43
ALH	1986	Truck	454	240	Manual	LE-8 VIN W
ALK	1978	Truck	427	220	Manual	L-43 VIN E
ALK	1987	Truck	454	230	Manual	L-19 TBI VIN N
ALM	1978	Truck	427	220	Manual	L-43 VIN E
ALS	1978	Truck	427	220	Manual	L-43 VIN E
ALS	1987	Truck	454	230	Manual	L-19 TBI VIN N
ALX	1987	Truck	454	230	Manual	L-19 TBI VIN N
ALY	1987	Truck	454	230	Manual	L-19 TBI VIN N
AMA	1986	Marine	427	220	.	L-43
AMB	1986	Marine	427	220	.	L-43
AMC	1986	Marine	427	220	.	L-43
AMD	1981	Marine	427	220	.	L-43
AMJ	1986	Marine	427	220	.	L-43
AML	1986	Marine	427	220	.	L-43
ARM	1978	Truck	366	200	Manual	L-86
ASB	1988	Truck	454	230	Manual	L-19 TBI VIN N
ASC	1988	Truck	454	230	Manual	L-19 TBI VIN N
ATA	1975	Truck	366	200	Automatic	L-86
ATB	1975	Truck	366	200	Manual	L-86
ATB	1976	Truck	366	200	Manual	L-86
ATB	1977	Truck	366	200	Manual	L-86
ATC	1975	Truck	366	200	540	L-86
ATC	1976	Truck	366	200	540	L-86
ATC	1977	Truck	366	200	540	L-86
AUA	1979	Truck	454	245	Manual	L-42 VIN S
AUB	1979	Truck	454	245	Manual	L-42 VIN S
AWB	1989	Truck	454	230	Manual	LE-8 VIN W
AWC	1989	Truck	454	230	Manual	LE-8 VIN W
AWH	1989	Truck	454	230	Manual	L-19 TBI VIN N
AWJ	1989	Truck	454	230	Manual	L-19 TBI VIN N
AWK	1989	Truck	454	230	Manual	LE-8 VIN W
AWL	1989	Truck	454	230	Manual	LE-8 VIN W
AWM	1989	Truck	454	230	Manual	LE-8 VIN W
AWN	1989	Truck	454	230	Manual	LE-8 VIN W
AWP	1989	Truck	454	230	Manual	L-19 TBI VIN N
AWR	1989	Truck	454	230	Manual	L-19 TBI VIN N
CGS	1970	Chevrolet	454	345	Manual	LS-4, Police
CGT	1970	Chevrolet	454	390	Manual	LS-5 HP, Police
CGU	1970	Chevrolet	454	390	Manual	LS-5 HP
CGV	1970	Chevrolet	454	345	Manual	LS-4
CGW	1970	Corvette	454	390	Automatic	LS-5 HP
CIL	1969	Camaro	402	350	Automatic	High Performance
CJA	1969	Chevelle	402	325	Manual	L-35
CJB	1969	Camaro	402	325	Powerglide	L-35 Aluminum Heads
CJC	1969	Chevelle	402	350	Manual	L-34 High Performance
CJD	1969	Chevelle	402	375	4 Speed Manual	L-78, Solid Cam, Hollye Carb
CJE	1969	Chevelle	402	350	Automatic	L-34 High Performance
CJF	1969	Chevelle	402	375	Automatic	L-78
CJF	1970	Camaro	396	350	Manual
CJG	1969	Camaro	402	325	Automatic	L-35
CJH	1969	Camaro	402	375	Manual	L-78
CJH	1970	Camaro	396	375		L-78
CJI	1969	Camaro	402	350	TH 400	L-34
CJK	1969	Chevelle	402	325	Automatic	L-35
CJL	1969	Camaro	402	375	Automatic	L-78
CJL	1970	Camaro	396	350	Automatic	L-34
CJU	1969	Camaro	402	325	Manual	L-35
CJV	1969	Chevelle	402	325	Manual	L-35
CKF	1969	Chevelle	402	375	TH 400	L-78, Solid Cam
CKN	1970	Chevelle	402	330	TH 400	LS-3
CKO	1970	Chevelle	396	375	Manual	L-78
CKP	1970	Nova	396	375	Automatic	L-89 SHP
CKQ	1970	Chevelle	396	375	Manual	L-78
CKR	1970	Chevelle	402	330	4 Speed Manual	LS-3
CKS	1970	Chevelle	402	330	4 Speed Manual	LS-3, HD Clutch
CKT	1970	Chevy II, Chevelle	396	375	Manual	L-89 SHP
CKU	1970	Chevelle	396	375	Manual	L-89 SHP
CLA	1971	Chevelle	402	300	TH 400	LS-3
CLA	1972	Chevelle	402	240	Manual	LS-3
CLB	1971	Monte Carlo, Chevelle	396	300	Automatic	LS-3
CLB	1972	Monte Carlo, Chevelle	396	210	Manual	LS-3
CLC	1971	Camaro	402	300	Manual	LS-3
CLD	1971	Camaro	396	300	Automatic	LS-3
CLL	1971	Monte Carlo, Chevelle	402	300	Manual	LS-3
CLP	1971	Monte Carlo	402	300	Automatic	LS-3
CLR	1971	Chevrolet	402	300	Manual	LS-3
CLR	1972	Chevrolet	402	210		LS-3
CLS	1971	Chevelle, Monte Carlo	402	300	Manual	LS-3
CLS	1972	Chevelle	402	240	Manual	LS-3
CPA	1971	Monte Carlo, Chevelle	454	365	Manual	LS-5
CPA	1972	Chevelle	454	270	Manual	LS-5
CPD	1971	Monte Carlo, Chevelle	454	365	Manual	LS-5
CPD	1972	Monte Carlo, Chevelle	454	270	Automatic	LS-5
CPG	1971	Chevelle, Monte Carlo	454	365	Manual	LS-5
CPG	1972	Chevrolet	454	270	Automatic	LS-5
CPH	1971	Corvette	454	365	Manual	LS-5
CPH	1972	Corvette	454	270	Manual	LS-5
CPJ	1971	Corvette	454	365	Automatic	LS-5
CPJ	1972	Corvette	454	270	Automatic	LS-5
CPP	1971	Chevelle	454	425	Manual	LS-6
CPR	1971	Chevelle	454	425	Automatic	LS-6
CPS	1971	Nova	454	425	TH 400	LS-6
CPT	1971	Nova	454	425	4 Speed Manual	LS-6
CPW	1971	Corvette	454	425	Manual	ZR-2
CPX	1971	Corvette	454	425	Automatic	LS-6
CPY	1971	Chevelle	454	425	TH 400	LS-6
CPZ	1971	Chevelle	454	425	TH 400	LS-6
CRI	1970	Corvette	454	390	Manual	LS-5 HP
CRJ	1970	Corvette	454	390	Manual	LS-5
CRN	1970	Chevelle	454	360	Manual	LS-5 HP
CRQ	1970	Chevelle	454	360	Automatic	LS-5 HP
CRR	1970	Chevelle	454	450	Automatic	LS-6 SHP
CRS	1970	Chevelle	454	450	Automatic	LS-6 SHP, Aluminum Heads
CRT	1970	Chevelle	454	360	Manual	LS-5 HP
CRV	1970	Chevelle	454	450	Manual	LS-6 HP
CRW	1972	Chevelle	454	270	Automatic	LS-5
CRX	1972	Chevelle	454	270	Manual	LS-5
CRY	1972	Chevrolet	454	270	Automatic	LS-5
CSR	1972	Corvette	454	270	Manual	LS-5
CSS	1972	Corvette	454	270	Manual	LS-5
CTA	1972	Chevelle, Camaro	402	240	Manual	LS-3
CTB	1972	Chevelle, Camaro	396	240	Automatic	LS-3
CTH	1972	Chevelle	402	240		AR
CTJ	1972	Monte Carlo	402	210
CTW	1970	Chevy II, Chevelle	396	350	Manual	HP
CTX	1970	Chevy II, Chevelle	396	350		HP
CTY	1970	Camaro, Chevelle	396	375		Special High Performance
CTZ	1970	Chevelle	396	350	Manual	HP
CWA	1973	Chevelle	454	250	Automatic
CWA	1974	Chevelle	454	235	Manual
CWB	1973	Chevelle	454	250	Manual
CWC	1973	Chevelle	454	250	Automatic	CA
CWD	1973	Monte Carlo	454	245	Manual	CA
CWD	1974	Monte Carlo, Chevelle	454	235	Automatic	California
CWI	1973	Chevrolet	454	250	Automatic	CA
CWK	1973	Chevrolet	454	250	Automatic
CWL	1973	Chevrolet	454	250
CWM	1973	Corvette	454	275	Automatic
CWM	1974	Corvette	454	270	Automatic
CWR	1973	Corvette	454	275	Automatic
CWR	1974	Corvette	454	270	Automatic
CWS	1973	Corvette	454	275	Manual	CA
CWS	1974	Corvette	454	270	Manual	CA
CWT	1973	Corvette	454	275		CA
CWT	1974	Corvette	454	270
CWU	1974	Chevrolet	454	235	Automatic	Police
CWW	1974	Chevrolet	454	235	Automatic	CA Police
CWX	1974	Monte Carlo, Chevelle	454	235	Automatic
CWY	1974	Chevrolet	454	235	Automatic	CA
CXA	1974	Chevrolet	454	235	Automatic	CA
CXB	1974	Chevrolet	454	235	Automatic	CA
CXC	1974	Chevrolet	454	235	Automatic	CA
CXK	1975	Chevrolet	454	215	Automatic
CXL	1975	Chevrolet	454	215	Automatic
CXM	1974	Chevelle	454	235	Automatic
CXR	1974	Monte Carlo, Chevelle	454	235
CXS	1974	Chevelle	454	235	Automatic
CXT	1974	Chevrolet	454	235	Automatic
CXU	1974	Chevrolet	454	235	Automatic
CXW	1975	Chevelle	454	215	Automatic
CXX	1975	Chevrolet	454	215	Automatic
CXX	1976	Chevrolet	454	225		LS4
CXY	1975	Chevrolet	454	215
CZL	1970	Corvette	454	465	Automatic	HD
CZN	1970	Corvette	454	465		HD
CZU	1970	Corvette	454	390		HP
ED	1966	Chevelle	396	325	Manual
ED	1967	Chevelle	396	325	Manual
ED	1968	Chevelle	396	325	Manual
EF	1966	Chevelle	396	360	Manual	HP
EF	1967	Chevelle	396	350	Manual	HP
EF	1968	Chevelle	396	350	Manual	HP
EG	1966	Chevelle	396	375	Manual	Special High Performance
EG	1967	Chevelle	396	375	Manual	Special High Performance
EG	1968	Chevelle	396	375	Manual	Special High Performance
EH	1966	Chevelle	396	325	Manual
EH	1967	Chevelle	396	325	Powerglide
EI	1967	Camaro	396	350	Automatic	HP
EJ	1966	Chevelle	396	360	Powerglide	HP
EJ	1967	Chevelle	396	350	Powerglide	HP
EK	1966	Chevelle	396	325	Powerglide
EK	1967	Chevelle	396	325	Powerglide
EK	1968	Chevelle	396	325	Powerglide
EL	1966	Chevelle	396	360	Powerglide	HP
EL	1967	Chevelle	396	350	Powerglide	HP
EL	1968	Chevelle	396	350	Powerglide	HP
EM	1966	Chevelle	396	325	Powerglide
EM	1967	Chevelle	396	325	Automatic
EN	1966	Chevelle	396	360		HP
EN	1967	Chevelle	396	350	Automatic	HP
EQ	1967	Camaro	396	350	0	Turbo Hydramatic
ET	1967	Chevelle	396	325	Automatic
ET	1968	Chevelle	396	325	Manual
EU	1967	Chevelle	396	350	Automatic	HP
EU	1968	Chevelle	396	350	Automatic	HP
EV	1967	Chevelle	396	350	Automatic	HP
EW	1967	Chevelle	396	350	Automatic	HP
EX	1967	Chevelle	396	375		Special High Performance
EY	1967	Camaro	396	350	Manual	HP Air Injector Reactor
IA	1965	Chevrolet	396	325	Manual
IA	1966	Chevrolet	396	325	Manual
IA	1967	Chevrolet	396	325	Manual
IA	1968	Chevrolet	427	425	Manual	Special High Performance
IB	1966	Chevrolet	396	325	Manual
IB	1967	Chevrolet	396	325	Manual	Air Brakes
IB	1968	Chevrolet	427	385	Manual	Police
IC	1965	Chevrolet	396	325	Powerglide	Transistor Ignition
IC	1966	Chevrolet	396	325	Powerglide	Air Brakes
IC	1967	Chevrolet	396	325	Automatic
ID	1966	Chevrolet	427	425	Manual	Special High Performance
ID	1967	Chevrolet	427	425	Manual	Special High Performance
ID	1968	Chevrolet	427	425		Special High Performance
IE	1965	Chevrolet	396	425	Manual	Special High Performance
IE	1967	Chevrolet	427	385	Manual	Impala SS
IE	1968	Chevrolet	427	385	Automatic
IF	1965	Corvette	396	425	Manual
IF	1967	Chevrolet	427	385	Manual	Air Brakes Impala SS
IF	1968	Chevrolet	396	325	Powerglide	Police
IG	1965	Chevrolet	396	325	Powerglide
IG	1966	Chevrolet	396	325	Powerglide
IG	1967	Chevrolet	396	325	Powerglide	Air Brakes
IG	1968	Chevrolet	396	325	Powerglide
IH	1966	Chevrolet	427	390	Manual
IH	1967	Chevrolet	427	385	Manual	Air Brakes
IH	1968	Chevrolet	427	385	Manual
II	1965	Chevrolet	396	325		Transistor Ignition
II	1966	Chevrolet	427	390	Automatic	Air Brakes
II	1967	Chevrolet	427	385	Automatic	Air Brakes
IJ	1966	Chevrolet	427	390
IJ	1967	Chevrolet	427	385	Automatic	Air Brakes
IJ	1968	Chevrolet	427	385
IK	1966	Corvette	427	425		SHP
IK	1967	Chevrolet	427	425
IK	1968	Chevrolet	396	325		Police
IL	1966	Corvette	427	390
IL	1967	Corvette	427	390
IL	1968	Corvette	427	390
IM	1966	Corvette	427	390
IM	1967	Corvette	427	390
IM	1968	Corvette	427	400		High Performance
IN	1966	Chevrolet	396	325
IN	1967	Chevrolet	396	325
IN	1968	Chevrolet	396	325		Police
IO	1966	Chevrolet	396	325
IO	1967	Chevrolet	427	385
IO	1968	Chevrolet	427	425		SHP
IP	1966	Corvette	427	425	Manual	SHP
IQ	1966	Corvette	427	390
IQ	1967	Corvette	427	390
IQ	1968	Corvette	427	390
IR	1966	Corvette	427	390
IR	1967	Corvette	427	390
IR	1968	Corvette	427	435		SHP
IS	1967	Impala SS	427	385
IS	1968	Chevrolet	427	385
IT	1967	Corvette	427	435		SHP
IT	1968	Corvette	427	435		SHP
IU	1967	Corvette	427	435		SHP
IU	1968	Corvette	427	435		SHP
IV	1965	Chevrolet	396	325
IV	1966	Chevrolet	396	325
IV	1967	Chevrolet	396	325
IV	1968	Chevrolet	396	325
IW	1965	Chevrolet	396	325
IX	1967	Impala SS	427	385	Automatic
JA	1967	Corvette	427	435		SHP
JA	1969	Chevelle	396	325
JB	1969	Camaro	396	325
JC	1967	Corvette	427	400
JC	1969	Chevelle	396	350		High Performance
JD	1967	Corvette	427	400
JD	1969	Chevelle	396	375		SHP
JE	1967	Corvette	427	435		SHP
JE	1969	Chevelle	396	350		High Performance
JF	1967	Corvette	427	400
JF	1969	Chevy II	396	350		High Performance
JG	1967	Corvette	427	400
JG	1969	Camaro	396	325
JH	1967	Corvette	427	435		SHP
JH	1969	Chevy II	396	375		SHP
JI	1969	Chevy II	396	350		High Performance
JJ	1969	Camaro	396	375		With Aluminum Heads
JK	1969	Chevelle	396	325
JL	1969	Chevy II	396	375		SHP
JM	1969	Camaro	396	375		With Aluminum Heads
JN	1969	Chevrolet	396	265
JO	1969	Chevrolet	396	265		Police
JP	1969	Chevrolet	396	265		Police
JQ	1969	Chevrolet	396	265
JR	1969	Chevrolet	396	265		Police
JT	1969	Chevrolet	396	265
JU	1969	Chevy II	396
JV	1969	Chevelle	396	325
KA	1969	Chevy II	396	350		High Performance
KB	1969	Chevelle	396	350		High Performance
KC	1969	Camaro	396	375		SHP
KD	1969	Chevelle	396	375		SHP
KE	1969	Camaro	396	375		With Aluminum Heads
KF	1969	Chevelle	396	375		SHP
KG	1969	Chevelle	396	375		With Aluminum Heads
KH	1969	Chevelle	396	375		With Aluminum Heads
KI	1969	Chevelle	396	375		With Aluminum Heads
LA	1969	Chevrolet	427	390		High Performance
LB	1965	Chevrolet	396	325
LB	1969	Chevrolet	427	335
LC	1965	Chevrolet	396	325
LC	1969	Chevrolet	427	390		High Performance
LD	1969	Chevrolet	427	425		SHP
LE	1969	Chevrolet	427	335
LF	1965	Chevrolet	396	325	Manual
LF	1969	Chevrolet	427	390		High Performance Police
LG	1969	Chevrolet	427	390		High Performance Police
LH	1969	Chevrolet	427	390		High Performance
LI	1969	Chevrolet	427	335
LJ	1969	Chevrolet	427	335		Police
LK	1969	Chevrolet	427	335		Police
LL	1969	Corvette	427	390		High Performance
LM	1969	Corvette	427	390		High Performance
LN	1969	Corvette	427	400		High Performance
LO	1969	Corvette	427	430		Heavy Duty
LP	1969	Corvette	427	435		With Aluminum Heads
LQ	1969	Corvette	427	400		High Performance
LR	1969	Corvette	427	435		SHP
LS	1969	Chevrolet	427	425		SHP
LT	1969	Corvette	427	435		SHP
LU	1969	Corvette	427	435		With Aluminum Heads
LV	1969	Corvette	427	430		Heavy Duty
LW	1969	Corvette	427	435		With Aluminum Heads
LX	1969	Corvette	427	435		SHD
LY	1969	Chevrolet	427	335		Police
LZ	1969	Chevrolet	427	390		High Performance Police
MA	1969	Chevrolet	427	335
MB	1969	Chevrolet	427	390		High Performance Police
MC	1969	Chevrolet	427	390		High Performance
MD	1969	Chevrolet	427	425		SHP
ME	1969	Corvette	427	430
MG	1969	Corvette	427	430
MH	1969	Corvette	427	390
MI	1969	Corvette	427	390	Manual
MJ	1969	Corvette	427	400
MK	1969	Corvette	427	400
MQ	1967	Camaro	396	375
MQ	1968	Chevy II	396	375		High Performance
MR	1967	Camaro	396	375
MR	1968	Camaro	396	350
MR	1969	Corvette	427	430
MS	1969	Corvette	427
MT	1968	Camaro	396	375
MW	1967	Camaro	396	325
MW	1968	Camaro	396	325
MX	1967	Camaro	396	325
MX	1968	Camaro	396	350
MY	1967	Camaro	396	325
MY	1968	Camaro	396	325
MZ	1967	Camaro	396	325
OA	1963	Impala	409	400		L-31
Q	1961	Impala	409	360		HP With Solid CAM
QA	1961	Impala	409	360	Manual	HP With Solid CAM
QA	1962	Impala	409	380		HP With Solid CAM
QA	1964	Impala	409	400		L-31
QB	1962	Impala	409	409		Dual 4-Barrel
QB	1963	Impala	409	425		L-80, Dual 4-Barrel
QB	1964	Impala	409	425		L-80, Dual 4-Barrel
QC	1963	Impala	409	340		L-33
QC	1964	Impala	409	340		L-33
QD	1962	Truck	409	252
QD	1963	Truck	409	252		L-40
QD	1964	Truck	409	252		L-40
QD	1965	Truck	409	252		L-40
QE	1962	Truck	409	252
QE	1963	Truck	409	252		L-40
QE	1964	Truck	409	252		L-40
QE	1965	Truck	409	252		L-40
QG	1963	Impala	409	340		L-33
QG	1964	Impala	409	340		L-33
QJ	1963	Truck	409	252		L-40
QJ	1964	Truck	409	252		L-40
QJ	1965	Truck	409	252		L-40
QM	1963	Impala	427	435		Z-11 Dual 4-Barrel HP, Solid Cam
QN	1964	Impala	409	400		L-31
QP	1964	Impala	409	425		L-80, Dual 4-Barrel
QQ	1964	Impala	409	340		L-33
QR	1964	Impala	409	340		L-33
T	1958	Truck	348	230
T	1959	Truck	348	230
TA	1958	Truck	348	230
TA	1959	Truck	348	230
TBG	1970	Truck	402	310		L-47
TBH	1970	Truck	402	310		L-47
TC	1960	Truck	348	230
TC	1961	Truck	348	230
TC	1962	Truck	348	220
TC	1963	Truck	348	220
TC	1964	Truck	348	220
TCH	1992	Truck	454	230		L-19 TBI VIN N
TCJ	1992	Truck	454	230		L-19 TBI VIN N
TCK	1992	Truck	454	230		L-19 TBI VIN N
TCL	1992	Truck	454	230		L-19 TBI VIN N
TCN	1992	Truck	454	230		L-19 TBI VIN N
TCS	1992	Truck	454	230		L-19 TBI VIN N
TCT	1992	Truck	454	230		L-19 TBI VIN N
TD	1960	Truck	348	230
TD	1961	Truck	348	230
TD	1962	Truck	348	220
TD	1963	Truck	348	220
TD	1964	Truck	348	220
TDH	1992	Truck	454	230		L-19 TBI VIN N
TDJ	1992	Truck	454	230		L-19 TBI VIN N
TDK	1992	Truck	454	230		L-19 TBI VIN N
TDL	1992	Truck	454	230		L-19 TBI VIN N
TE	1960	Truck	348	230
TE	1961	Truck	348	230
TE	1962	Truck	348	220
TE	1963	Truck	348	220
TE	1964	Truck	348	220
TF	1960	Truck	348	230
TF	1961	Truck	348	230
TF	1962	Truck	348	220
TF	1963	Truck	348	220
TF	1964	Truck	348	220
THB	1972	Truck	402	210
TKA	1971	Truck	402	310		L-47
TKA	1972	Truck	402	210
TKA	1982	Truck	454	210		LE-8 VIN W
TKB	1971	Truck	402	310		L-47
TKB	1972	Truck	402	210
TKC	1982	Truck	454	210		LE-8 VIN W
TKD	1982	Truck	454	210		LE-8 VIN W
TKF	1982	Truck	454	210		LE-8 VIN W
TKH	1982	Marine	454	210		LE-8
TKM	1972	Truck	402	210
TKW	1972	Truck	402	210
TKX	1972	Truck	402	210
TLM	1972	Truck	402	210
TMI	1970	Truck	427	260		L-43
TPH	1992	Truck	454	230		L-19 TBI VIN N, fwd
TPJ	1992	Truck	454	230		L-19 TBI VIN N
TPK	1992	Truck	454	230		L-19 TBI VIN N, fwd
TRA	1973	Truck	454	240		LS-4 VIN Z, L,
TRB	1973	Truck	454	240		LS-4 VIN Z, L,
TRB	1977	Truck	454	250		LE-8 VIN W
TRC	1973	Truck	454	250		LS-4 VIN Z, L,
TRC	1977	Truck	454	250		LE-8 VIN W
TRC	1980	Truck	454	225		LE-8 VIN W
TRD	1977	Truck	454	250		LE-8 VIN W
TRF	1978	Truck	454	250		LE-8 VIN W
TRF	1980	Truck	454	225		LE-8 VIN W
TRH	1973	Truck	454	240		LS-4 VIN Z, L,
TRH	1974	Truck	454	245		LS-4 VIN Z, L,
TRH	1978	Truck	454	250		LE-8 VIN W
TRH	1980	Truck	454	225	Automatic	LE-8 VIN W
TRJ	1973	Truck	454	240		LS-4 VIN Z, L,
TRJ	1974	Truck	454	245		LS-4 VIN Z, L,
TRK	1973	Truck	454	240		LS-4 VIN Z, L,
TRK	1978	Truck	454	250		LE-8 VIN W
TRK	1981	Truck	454	210		LE-8 VIN W
TRL	1973	Truck	454	240		LS-4 VIN Z, L,
TRL	1974	Truck	454	245		LS-4 VIN Z, L,
TRL	1978	Truck	454	250		LE-8 VIN W
TRL	1981	Truck	454	210		LE-8 VIN W
TRM	1978	Truck	454	250		LE-8 VIN W
TRR	1973	Truck	454	250		LS-4 VIN Z, L,
TRR	1979	Truck	454	205
TRS	1979	Truck	454	205
TRT	1974	Truck	454	245		LS-4 VIN Z, L,
TRT	1979	Truck	454	210		LE-8 VIN S
TRU	1974	Truck	454	245		LS-4 VIN Z, L,
TRU	1979	Truck	454	205
TRW	1974	Truck	454	245		LS-4 VIN Z, L,
TRW	1979	Truck	454	210		LE-8 VIN S
TRX	1974	Truck	454	245		LS-4 VIN Z, L,
TRX	1979	Truck	454	210		LE-8 VIN S
TRY	1975	Truck	454	215		LS-4 VIN Z, L
TRY	1978	Truck	454	250		LE-8 VIN W
TRZ	1975	Truck	454	215		LS-4 VIN Z, L
TRZ	1976	Truck	454	250		LF-8 VIN Y
TRZ	1977	Truck	454	250		LE-8 VIN W
TRZ	1979	Truck	454	205
TSA	1975	Truck	454	215		LS-4 VIN Z, L
TSA	1976	Truck	454	250		LF-8 VIN Y
TSA	1977	Truck	454	250		LE-8 VIN W
TSB	1975	Truck	454	215		LS-4 VIN Z, L, fwd
TSB	1978	Truck	454	250		LE-8 VIN W
TSC	1975	Truck	454	215		LS-4 VIN Z, L
TSC	1977	Truck	454	250		LE-8 VIN W
TSD	1975	Truck	454	215		LS-4 VIN Z, L
TSD	1977	Truck	454	250		LE-8 VIN W
TSF	1978	Truck	454	250		LE-8 VIN W
TSH	1975	Truck	454	215		LS-4 VIN Z, L, fwd
TSH	1978	Truck	454	250		LE-8 VIN W
TSJ	1975	Truck	454	215		LS-4 VIN Z, L
TSJ	1978	Truck	454	250		LE-8 VIN W
TSK	1975	Truck	454	215		LS-4 VIN Z, L
TSK	1977	Truck	454	250		LE-8 VIN W
TSL	1975	Truck	454	215		LS-4 VIN Z, L
TSL	1976	Truck	454	250		LF-8 VIN Y
TSL	1977	Truck	454	250		LE-8 VIN W
TSM	1975	Truck	454	215	Automatic	LS-4 VIN Z, L,
TSM	1977	Truck	454	250		LE-8 VIN W
TSR	1977	Truck	454	250		LE-8 VIN W
TSS	1978	Truck	454	250		LE-8 VIN W
TST	1978	Truck	454	250		LE-8 VIN W
TSU	1978	Truck	454	250	Automatic	LE-8 VIN W
TTZ	1970	Truck	427	260		L-43
TXA	1989	Truck	454	230		L-19 TBI VIN N,
TXB	1989	Truck	454	230		L-19 TBI VIN N,
TXF	1989	Truck	454	230		L-19 TBI VIN N,
TZB	1985	Truck	454	240		LE-8 VIN W
TZC	1985	Truck	454	240		LE-8 VIN W
TZD	1985	Truck	454	240		LE-8 VIN W
TZF	1985	Truck	454	240		LE-8 VIN W
TZG	1985	Truck	454	240		LE-8 VIN W
TZH	1985	Truck	454	240		LE-8 VIN W
TZJ	1985	Truck	454	240		LE-8 VIN W
TZK	1985	Truck	454	240		LE-8 VIN W
TZL	1985	Marine	454	240		LE-8
TZM	1985	Truck	454	240		LE-8 VIN W
U	1958	Truck	348	230
U	1959	Truck	348	230
U2C	1989	Truck	454	230		L-19 TBI VIN N,
U2D	1989	Truck	454	230		L-19 TBI VIN N,
U2J	1989	Truck	454	230		L-19 TBI VIN N,
U2K	1989	Truck	454	230		L-19 TBI VIN N,
U2L	1989	Truck	454	230		L-19 TBI VIN N,
U2W	1989	Truck	454	230		L-19 TBI VIN N,
U2Z	1989	Truck	454	230		L-19 TBI VIN N,
UA	1958	Truck	348	230
UA	1959	Truck	348	230
UBA	1983	Truck	454	230		LE-8 VIN W
UBB	1983	Truck	454	230		LE-8 VIN W
UBC	1983	Truck	454	230		LE-8 VIN W
UBD	1983	Truck	454	230		LE-8 VIN W
UBF	1983	Truck	454	230		LE-8 VIN W
UBH	1983	Truck	454	230		LE-8 VIN W
UCA	1981	Truck	454	210		LE-8 VIN W
UCB	1981	Truck	454	210		LE-8 VIN W
UCH	1993	Truck	454	230		L-19 TBI VIN N
UCJ	1993	Truck	454	230		L-19 TBI VIN N
UCK	1993	Truck	454	230		L-19 TBI VIN N
UCL	1993	Truck	454	230		L-19 TBI VIN N
UCN	1993	Truck	454	230		L-19 TBI VIN N
UCS	1993	Truck	454	230		L-19 TBI VIN N
UCT	1993	Truck	454	230		L-19 TBI VIN N
UDL	1993	Truck	454	230		L-19 TBI VIN N
UPH	1993	Truck	454	230		L-19 TBI VIN N, fwd
UPJ	1993	Truck	454	230		L-19 TBI VIN N
UPK	1993	Truck	454	230		L-19 TBI VIN N, fwd
XE	1968	Truck	396	310		L-66
XF	1968	Truck	396	310		L-66
XG	1968	Truck	396	310		L-66
XH	1968	Truck	396	310		L-66
XK	1968	Truck	396	275		L-66, 2-Barrel
XL	1968	Truck	396	275		L-66, 2-Barrel
XM	1968	Truck	396	275		L-66, 2-Barrel
XN	1968	Truck	396	275	Manual	L-66, 2-Barrel
YM	1965	Truck	348	220
YO	1965	Truck	348	220
YP	1965	Truck	348	220
YP	1969	Truck	396	310		L-66
YQ	1965	Truck	348	220
YQ	1969	Truck	396	310		L-66
YR	1969	Truck	396	310		L-66
YS	1969	Truck	396	310		L-66
YT	1969	Truck	427	260		L-43
YU	1969	Truck	427	260		L-43
YV	1969	Truck	427	260		L-43
YW	1969	Truck	427	260		L-43

Block Casting Number

The Chevrolet Big Block casting number consists of 6, 7, or 8 digits and does not contain any letters. Any letters cast near the number are part of the mold identification and are not part of the casting number. The Block Casting Number identifies various characteristics 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.	Displacement	Year	Note	Main	Deck	HP Rating
340220	427	72-76	Truck	4-bolt	Tall
345014	454	74-86	Truck
346236	454	74-76		2-Bolt		215
359070	454	74-90	Truck
361959	454	73-85	Car & Truck	2 or 4-Bolt
364776	427	68-84	Truck	4-Bolt	Tall
364779	366	68-88	Truck	4-Bolt	Tall
399204	509	70-71	Aluminum Can-AM	4-Bolt
399289	454	73-79		2-bolt
399293	366	77-78	Truck	4-Bolt
473478	427	68-84	Truck	4-Bolt	Tall
1014183	366	91-92		4-bolt	Tall
1401544	454	75-87	Truck
3732755	348	59-61
3732811	348	58
3751872	348	58
3755011	348	59-61
3771705	348	59-61
3782012	348	58-61
3782870	427	68-76	Truck	4-Bolt	Tall
3788068	409	62
3795623	409	61
3798962	348	62-65	Truck
3815707	348	58-61
3824553	366	66-67	Truck
3830814	409	63
3839752	409	62-63
3839754	409	65
3844422	409	64
3855061	396	65-67
3855961	396	66-67		2-bolt		325 and 360
3855962	396	65-66		4-Bolt		360, 375, and 425
3855977	366	65-67	Truck	4-Bolt	Tall
3857655	348	62-65	Truck
3857656	409	65
3860386	409	62-64
3860387	348	58
3866961	396	66-69	Truck
3869942	427	66-67		2 or 4-Bolt		390 and 425
3873858	396	66		4-Bolt		375
3902406	396	67		2 or 4-Bolt		325, 350, and 375
3902466	396	65-67
3904351	427	67		2 or 4-Bolt		385, 390, 400, 425, 430,and 435
3904354	366	66-67	Truck	4-Bolt	Tall
3916319	366	68-85	Truck	4-Bolt	Tall
3916321	427	68		2 or 4-Bolt		385, 390, 400, 425, 430, and 435
3916323	396	68		2 or 4-Bolt		325, 350, and 375
3918319	366	66-70	Truck		Tall
3925521	366	68-85	Truck	4-Bolt	Tall
3928319	366	69-73	Truck		Tall
3935439	427	68-69		2 or 4-Bolt		335, 390, 400, 425, 430, and 435
3935440	396	68-69		2 or 4-Bolt		265, 325, 350, and 375
3937724	366	68-85	Truck	4-Bolt	Tall
3937726	427	68-84	Truck	4-Bolt	Tall
3946052	427	69	ZL-1, aluminum Mark IV	4-Bolt		430
3946053	427	97	ZL-I Aluminum	4-Bolt
3955270	427	69		2 or 4-Bolt		335, 390, 400, 425, 430, and 435
3955272	396	69		2 or 4-Bolt		325, 350, and 375
3955274	366	68-85	Truck	4-Bolt	Tall
3955276	427	68-84	Truck	4-Bolt	Tall
3963512	427	69-71	COPO	2 or 4-Bolt		360, 375, 425, and 460
3963513	454	73-76				215
3965440	396	68-69
3965449	396	68-72
3965540	396	68
3968852	366	68-85	HD
3968854	396	68-69	Light Duty
3969852	366	68-84	Truck	4-Bolt
3969854	396	69		2 or 4-Bolt		240, 265, 300, 325, 330, 350, and 375
3969854	402	70-72		2 or 4-Bolt		240, 265, 300, 325, 330, 350, and 375
3969858	427	68-84	Truck	4-Bolt	Tall
3995623	409	61
3999289	454	72-78	Car & Truck	2-Bolt	Tall	215, 235, 240 and 270
3999290	402	72		2-Bolt		240
3999293	366	68-85	Truck	4-Bolt	Tall
3999294	427	68-84	Truck	4-Bolt	Tall
6272176	366	68-76	Truck		Tall
6272177	402	72		2-bolt		210
6272181	427	73-76	Truck		Tall
10068286	454	90-91	Mark IV	4-Bolt	Short
10114182	454	91-95		4-Bolt	Tall
10114183	366	91-95	Truck Gen V	4-Bolt
10114184	427	91-95	Truck Gen V	4-Bolt
10237297	454	96-up	Vortex L-29	4-Bolt
10237300	502	96-up		4-Bolt
12550312	427	96-up		4-Bolt
12550313	454	91-up		4-Bolt
12556110	496	01-up	Truck Vortex Gen VII	4-Bolt
14015443	454	87-90	Truck Mark IV	4-Bolt
14015445	454	75-90	Car & Truck	2 or 4-Bolt
14015543	454	87-90		4-Bolt

Chevy Big Block Date Code

The Engine Block Date Code indicates the month, date, and year the engine block was cast. The engine assembly date is identified by the engine code stamped on the front of the block.

Engine Block Date Code Location

On most Chevrolet Big Block engines, the date code is located on the rear 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 date code consists of 3 or 4 characters. The first character is a letter representing the month. The next one or two digits represent the day of the month, and the final digit represents 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 = October
K = November
K = December

Chevrolet Big Block Engine Identification – A Quick Guide to Visually Identifying Chevrolet Big Block Engine Families

The quickest way to identify a Chevrolet Big Block engine family is by examining the valve covers and fuel pump mounting area. These visual differences can help distinguish W-Series, Mark IV, and Generation V engines even when casting numbers are difficult to locate.

The W-Series Chevrolet engines are easily identified by their distinctive W-shaped valve covers.

The Mark IV and Generation V Chevrolet Big Block engines use rectangular valve covers. One easy way to distinguish them is that Mark IV blocks have a mechanical fuel pump mounting pad on the front passenger side of the block, while Generation V blocks do not.

Chevrolet Big Block W-Series

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

Easily identified by their distinctive W-shaped valve covers. The W-Series uses a unique combustion chamber design that gives the valve covers their unusual appearance.

Distinctive W-shaped valve covers
Spark plugs enter the combustion chamber at a unique angle
Produced from 1958–1965

Chevrolet Big Block Mark IV

Mark IV Series (366, 396, 402, 427, and 454) — 1965–1990

The most common Chevrolet Big Block family found in muscle cars and trucks. Mark IV engines use rectangular valve covers and have a mechanical fuel pump mounting pad on the front passenger side of the block.

Rectangular valve covers
Mechanical fuel pump mounting pad on the front passenger side of the block
Produced from 1965–1990
Most common Chevrolet Big Block found in muscle cars

Chevrolet Big Block Gen V

Generation V (454 and 502) — 1991–1995

Generation V engines are similar in appearance to the Mark IV series but can be identified by the absence of a mechanical fuel pump mounting pad on the passenger side of the block. Many Generation V engines were equipped with one-piece rear main seals and updated oiling system designs.