Mopar Engine Block Casting Numbers

Mopar Engine Block 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 NumberYearsEngine SizeSeriesNotes
17376291961-1964361B 
18516291961413RB 
18517291959-1964383B 
18520291962-1965426RB 
19449291958350B 
19454291965361B 
2120229 361B 
21203291959-1960383RB 
2120429 361B 
21205291959-1965413RB 
21288541964361/383B 
22028431960-1964170G 
2202857 225RG 
2205528 225RG 
2205630 170G 
22056971959-1965413/426RB 
22057121958-1966361B 
22642301960-1967318A 
2264478 170G 
24067301963-1965426RBWedge/Max Performance Wedge
24322301964-1966426RBWedge/Max Performance Wedge
2440873 426RB 
24632301965170G 
2463252 273LA 
24633951965170G 
24634301960-1967225RG 
24653301964-1966273LA 
2466090 318LA 
2468030 413  
24681301959-1971383B 
2468230 318A 
24683301966-1971426RBHEMI
25321301965383B 
25322301964-1966426RBWedge
2532630 318A 
25360301967-75318LA 
25361301965273LA 
25364301966-1972440RB 
2566080 318LA 
25681301959-1971383B 
2586430   Contact Us If You Have Info
26588361966-later Industrial426  
26589301965361B 
27809301968-1973340LANot T/A or AAR
28060301961-1974318LA 
28061301965-1969273LA 
28068301968-1970225RG 
28998301970383B 
2951694 225RG 
34184961971-1974360LA 
34626051975225RG 
35771301970-1971340LAT/A and AAR
35771301970-1971340LAT/A and AAR
36142301971-1972400B 
36983301973-1978440RB 
36986301973-1978400B 
36988301972-1978440RB 
38102301975-1978360LA 
38702301975360LA 
40065301976-1978400B 
40066301975-1978440RB 
40067301976-1979318LA 
40068301976-1980360LA 
40271631980-1985318LA 
40275931980-1985318LA 
40275961980-1985360LA 
40413141976-1977225RGForged Crank
40710511980-1985360LA 
40710721976-1977225RGCast Crank
4104230 318LARace Engine
41799301975-1993360LA 
43233021986-1990318LA 
43233451986-1989360LA 
43434751986-1988360LA 
43439231986-1988360LA 
44483081989-1991360LA