UP 3335-3399:
UP 3335-3399 - built 2-5/1977 - EMD serial numbers 766056-1 thru 766056-65:
| UP 3335 | UP 3336 | UP 3337 | UP 3338 | UP 3339 |
| UP 3340 | UP 3341 | UP 3342 | UP 3343 | UP 3344 |
| UP 3345 | UP 3346 | UP 3347 | UP 3348 | UP 3349 |
| UP 3350 | UP 3351 | UP 3352 | UP 3353 | UP 3354 |
| UP 3355 | UP 3356 | UP 3357 | UP 3358 | UP 3359 |
| UP 3360 | UP 3361 | UP 3362 | UP 3363 | UP 3364 |
| UP 3365 | UP 3366 | UP 3367 | UP 3368 | UP 3369 |
| UP 3370 | UP 3371 | UP 3372 | UP 3373 | UP 3374 |
| UP 3375 | UP 3376 | UP 3377 | UP 3378 | UP 3379 |
| UP 3380 | UP 3381 | UP 3382 | UP 3383 | UP 3384 |
| UP 3385 | UP 3386 | UP 3387 | UP 3388 | UP 3389 |
| UP 3390 | UP 3391 | UP 3392 | UP 3393 | UP 3394 |
| UP 3395 | UP 3396 | UP 3397 | UP 3398 | UP 3399 |