Serial numbers (all series) according to plant of manufacture:
| Flint, Michigan |
14524131 to 14801264 |
| Southgate, California |
24530001 to 24775798 |
| Linden, New Jersey |
34540001 to 34776843 |
| Kansas City, Kansas |
44536001 to 44774870 |
| |
|
| Engine Numbers |
|
| Special Series 40 |
began with 4999880-4
(4 denotes Series 40) |
| Super Series 50 |
began with 4999880-5
(5 denotes Series 50) |
| Super Series 70 |
began with 4999880-7
(7 denotes Series 70) |
|
