The block casting numbers for all RB, B, and LA engines are
found on the left (driver) side of the block. In addition, on 1968
and later engines the numbers stamped on the lower rail of the engines
right (passenger) side match the last 8 digits of the cars vehicle
identification number.
Casting Number on LH Side
of Engine
VIN Number Stamped on RH
Engine Pad
Casting Number
CID
Year
Type
Remarks
2202843
170
1960-64
G
2463230
170
1965
G
2463395
170
-
G
2264478
170
-
G
2205630
170
-
G
2463430
225
1966
RG
2806830
225
1968-70
RG
Includes 198
3462605
225
1975
RG
2951694
225
-
RG
2202857
225
-
RG
2205528
225
-
RG
2465330
273
1964-66
LA
2806030
273
1966-69
LA
2463252
273
-
LA
2536130
273
1965-69
LA
2806130
273
1966-69
LA
2264230
318
1960-66
A
Polysphere
2468230
318
-
A
Polysphere
2532630
318
-
A
Polysphere
2466090
318
1967-74
LA
2806030
318
1966-69
LA
2806030
318
1967-74
LA
2536030
318
1967-75
LA
2566080
318
-
LA
4104230
318
-
LA
Race - Painted
Orange
2780930
340
1968-73
LA
Except T/A & AAR
3577130TA
340 - 6 bbl
1970
LA
T/A & AAR
1944929
350
1958
3418496
360
1971-74
LA
3870230
360
1975-78
LA
4179930
360
1975-1993
LA
1737629
361
1961-64
B
2120329
361
1958-66
B
2120429
361
-
B
2128854
361
1964
B
2205712
361
1958-66
B
1945429
361
1965
B
2658930
361
1965
B
2120229
361
-
B
Industrial
1852029
413
1959-62
RB
Max Perf. & Truck
2120529
413
1959-65
RB
2205697
413
1959-65
RB
Passenger Car
2468030
413
-
RB
2658836
413
-
RB
Industrial
2205697
426
1964
RB
Passenger Car
2406730
426
1963-65
RB
Wedge & Max Perf.
1852029
426
1962-65
RB
Wedge
2468030
426
-
RB
Wedge
2440873
426
-
RB
Wedge
2532230
426
1964-66
RB
Wedge & Max Perf.
2658836
426
-
RB
Industrial
1851729
383
1959-64
B
2128854
383
1964
B
2532130
383
1965
B
2120329
383
1959-60
RB
Golden Lion
2899830
383
1970
B
2568130
383
1959-71
B
2468330
426
1964-71
RB
Hemi Head
2536430
440
1966-72
RB
2658836
426
-
RB
Industrial
3614230
400
1971-72
B
3698630
400
1973-78
B
4006530
400
1976-78
B
3698830
440
1973-78
RB
4006530
400
1976-78
B
4006630
440
1978
RB
Mopar, Dodge, Chrysler, and Plymouth are
registered trademarks of DiamlerChrysler.
MyMopar.com is not affiliated in any way with DaimlerChrysler.
Please read our
Privacy Policy.