Serial numbers (all series) according to plant of manufacture:
| Flint, Michigan |
15360001 to 16031255 |
| Southgate, California |
25370001 to 26000610 |
| Linden, New Jersey |
35374001 to 36002483
|
| Kansas City, Kansas |
45380001 to 46007160 |
| Wilmington, Deleware |
55388001 to 56009173 |
| Framingham, Massachusetts |
75397001 to 76011309 |
| Atlanta, Georgia |
65393001 to 66031256 |
| |
|
| Engine Numbers |
|
| Special Series 40 |
began with 5568000-4
(4 denotes Series 40) |
| Super Series 50 |
began with 5628758-5
(5 denotes Series 50) |
| Super Series 70 |
began with 5635021-7
(7 denotes Series 70) |
|
