Here’s a handy little chart to have around. Below is the firing order of the 289, 302 and 351 small block engines.
289 | 1-5-4-2-6-3-7-8 |
302 (Pre-1982) | 1-5-4-2-6-3-7-8 |
5.0 & 5.0 Truck | 1-5-4-2-6-3-7-8 |
5.0 HO | 1-3-7-2-6-5-4-8 |
351 | 1-3-7-2-6-5-4-8 |
Here is the cylinder numbering for all SBF engines:
Back of Engine
4 8
3 7
2 6
1 5
Front of Engine