Firing order: 1-5-6-3-4-2-7-8 (15634278).
Cylinder numbering: RIGHT bank odd 1-3-5-7, left bank even 2-4-6-8; No. 1 = right front
| Engines | Cadillac OHV V8 331-500 and 368/425 |
| Years | 1949-1984 |
| Firing order | 1-5-6-3-4-2-7-8 |
| Cylinder numbering | RIGHT bank odd 1-3-5-7, left bank even 2-4-6-8; No. 1 = right front |
| Distributor rotation | clockwise |