Serial numbers (all series) according to plant of manufacture:
| Flint, Michigan |
15020984 to 15348304 |
| Southgate, California |
25030001 to 25332419 |
| Linden, New Jersey |
35036001 to 35333911
|
| Kansas City, Kansas |
45043001 to 45335606 |
| Wilmington, Deleware |
55050001 to 55417948 and
55417001 to 55417948 |
| Framingham, Massachusetts |
75057001 to 75338786 |
| Atlanta, Georgia |
65054001 to 65337687 |
| |
|
| Engine Numbers |
|
| Special Series 40 |
began with 5220972-4 to 5259136-4
(4 denotes Series 40) |
| Super Series 50 |
began with 5220972-5 to 5659598-5
(5 denotes Series 50) |
| Super Series 70 |
began with 52220972-7 to 5548366-7
(7 denotes Series 70) |
|
