Mopar Engine Block Casting Numbers

Mopar Engine Block Casting Numbers — The list covers a wide range of engines including the popular 318, 340, 383, 400, 413, 426, and 440 engines.

Mopar Engine Block Casting Number Location

Casting numbers for both small-block Mopar and big-block Mopar engines can be found on the left (driver’s) side of the block, and will consist of seven digits.

These numbers are different than the stamped eight-digit number found on the right side of the engine — that is the last eight digits of the Vehicle Identification Number.

When identifying the Mopar engine blocks, you want the raised seven-digit number, not the stamped eight-digit number.

Casting Number	Years	Engine Size	Series	Notes
1737629	1961-1964	361	B
1851629	1961	413	RB
1851729	1959-1964	383	B
1852029	1962-1965	426	RB
1944929	1958	350	B
1945429	1965	361	B
2120229		361	B
2120329	1959-1960	383	RB
2120429		361	B
2120529	1959-1965	413	RB
2128854	1964	361/383	B
2202843	1960-1964	170	G
2202857		225	RG
2205528		225	RG
2205630		170	G
2205697	1959-1965	413/426	RB
2205712	1958-1966	361	B
2264230	1960-1967	318	A
2264478		170	G
2406730	1963-1965	426	RB	Wedge/Max Performance Wedge
2432230	1964-1966	426	RB	Wedge/Max Performance Wedge
2440873		426	RB
2463230	1965	170	G
2463252		273	LA
2463395	1965	170	G
2463430	1960-1967	225	RG
2465330	1964-1966	273	LA
2466090		318	LA
2468030		413
2468130	1959-1971	383	B
2468230		318	A
2468330	1966-1971	426	RB	HEMI
2532130	1965	383	B
2532230	1964-1966	426	RB	Wedge
2532630		318	A
2536030	1967-75	318	LA
2536130	1965	273	LA
2536430	1966-1972	440	RB
2566080		318	LA
2568130	1959-1971	383	B
2586430				Contact Us If You Have Info
2658836	1966-later Industrial	426
2658930	1965	361	B
2780930	1968-1973	340	LA	Not T/A or AAR
2806030	1961-1974	318	LA
2806130	1965-1969	273	LA
2806830	1968-1970	225	RG
2899830	1970	383	B
2951694		225	RG
3418496	1971-1974	360	LA
3462605	1975	225	RG
3577130	1970-1971	340	LA	T/A and AAR
3577130	1970-1971	340	LA	T/A and AAR
3614230	1971-1972	400	B
3698330	1973-1978	440	RB
3698630	1973-1978	400	B
3698830	1972-1978	440	RB
3810230	1975-1978	360	LA
3870230	1975	360	LA
4006530	1976-1978	400	B
4006630	1975-1978	440	RB
4006730	1976-1979	318	LA
4006830	1976-1980	360	LA
4027163	1980-1985	318	LA
4027593	1980-1985	318	LA
4027596	1980-1985	360	LA
4041314	1976-1977	225	RG	Forged Crank
4071051	1980-1985	360	LA
4071072	1976-1977	225	RG	Cast Crank
4104230		318	LA	Race Engine
4179930	1975-1993	360	LA
4323302	1986-1990	318	LA
4323345	1986-1989	360	LA
4343475	1986-1988	360	LA
4343923	1986-1988	360	LA
4448308	1989-1991	360	LA

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