What is the firing order for a 1980 Chevy V8?

The firing order for a 1980 Chevy small-block V8 (most common) is 1-8-4-3-6-5-7-2. However, there were different engines offered in 1980 Chevrolets, so this is not guaranteed for all models. To be absolutely certain, you should check the engine casting number or your owner's manual.