The firing order for a small-block Chevy V8 is typically 1-8-4-3-6-5-7-2. However, some variations exist depending on the specific year and model. The cylinder numbering itself is consistent, usually following this pattern:
* Passenger side (right side as you face the engine): 1, 3, 5, 7
* Driver side (left side as you face the engine): 2, 4, 6, 8
To be absolutely certain, you should consult a service manual specific to the year and model of your Chevy engine.