Serial numbers (all series) according to plant of manufacture:
| Flint, Michigan |
1436445 to 14519786 |
| Southgate, California |
24380001 to 24511494 |
| Linden, New Jersey |
34390001 to 34429256
|
| Kansas City, Kansas |
44415001 to 44419786 |
| |
|
| Engine Numbers |
|
| Special Series 40 |
began with 4558037-4
(4 denotes Series 40) |
| Super Series 50 |
began with 4558037-5
(5 denotes Series 50) |
| Super Series 70 |
began with 455829-7
(7 denotes Series 70) |
|
