All engines are stamped with an engine ID code, consisting of assembly plant code, production date, and suffix code.
| Casting Number | CID | Main Bolts |
|---|---|---|
| 330817 | 400 | 2-Bolt |
| 346236 | 454 | 2-Bolt |
| 355909 | 262 | 2-Bolt |
| 3703524 | 265 | 2-Bolt |
| 3720991 | 265 | 2-Bolt |
| 3731548 | 283 | 2-Bolt |
| 3737739 | 283 | 2-Bolt |
| 3751872 | 348 | 2-Bolt |
| 3755011 | 348 | 2-Bolt |
| 3756519 | 283 | 2-Bolt |
| 3771705 | 348 | 2-Bolt |
| 3782870 | 327 | 2-Bolt |
| 3788068 | 409 | 2-Bolt |
| 3789935 | 283 | 2-Bolt |
| 3790721 | 283 or 327 | 2-Bolt |
| 3791362 | 327 | 2-Bolt |
| 3794226 | 283 | 2-Bolt |
| 3795623 | 409 | 2-Bolt |
| 3798962 | 348 | 2-Bolt |
| 3830814 | 409 or 427 | 2-Bolt |
| 3834810 | 283 | 2-Bolt |
| 3834812 | 283 | 2-Bolt |
| 3844422 | 409 | 2-Bolt |
| 3849852 | 283 | 2-Bolt |
| 3855961 | 396 | 2-Bolt |
| 3855962 | 396 | 4-Bolt |
| 3857656 | 409 | 2-Bolt |
| 3858174 | 327 | 2-Bolt |
| 3858180 | 327 | 2-Bolt |
| 3862194 | 283 | 2-Bolt |
| 3869942 | 427 | 2-Bolt or 4-Bolt |
| 3892657 | 302 or 327 or 350 | 2-Bolt |
| 3896944 | 283 | 2-Bolt |
| 3902406 | 396 | 2-Bolt or 4-Bolt |
| 3903352 | 327 | 2-Bolt |
| 3904351 | 427 | 2-Bolt or 4-Bolt |
| 3914636 | 307 | 2-Bolt |
| 3914660 | 327 | 2-Bolt |
| 3914678 | 302 or 327 or 350 | 2-Bolt |
| 3916321 | 427 | 2-Bolt or 4-Bolt |
| 3916323 | 396 | 2-Bolt or 4-Bolt |
| 3932386 | 302 or 350 | 4-Bolt |
| 3932388 | 302 or 350 | 4-Bolt |
| 3935439 | 427 | 2-Bolt or 4-Bolt |
| 3935440 | 396 | 2-Bolt or 4-Bolt |
| 3946052 | 427 | 4-Bolt |
| 3951509 | 400 | 2-Bolt or 4-Bolt |
| 3951511 | 400 | 4-Bolt |
| 3955270 | 427 | 2-Bolt or 4-Bolt |
| 3955272 | 396 | 2-Bolt or 4-Bolt |
| 3956618 | 302 or 327 or 350 | 2-Bolt or 4-Bolt |
| 3956632 | 307 | 2-Bolt |
| 3963512 | 427 or 454 | 2-Bolt or 4-Bolt |
| 3969854 | 396 or 402 | 2-Bolt or 4-Bolt |
| 3970010 | 350 | 2-Bolt or 4-Bolt |
| 3970014 | 350 | 2-Bolt or 4-Bolt |
| 3970020 | 307 | 2-Bolt |
| 3970024 | 307 | 2-Bolt |
| 3999289 | 454 | 2-Bolt |
| 3999290 | 402 | 2-Bolt |
