Firing order: 1-8-7-2-6-5-4-3 (18726543).
Cylinder numbering: Left bank 1-3-5-7
| Engines | GM Gen III / Gen IV LS V8: 4.8, 5.3, 5.7 LS1/LS6, 6.0, 6.2, 7.0 LS7 |
| Years | 1997-2020s |
| Firing order | 1-8-7-2-6-5-4-3 |
| Cylinder numbering | Left bank 1-3-5-7 |
| Ignition | Coil-per-cylinder on every Gen III/IV; no distributor. |