What octane rating is required for a 3.8L Chevrolet Camaro?

The recommended octane rating for a 3.8L Chevrolet Camaro depends on the model year. Chevrolet generally recommends 87 octane (regular) for the 3.8L V6 engines in most Camaro years. However, using a higher octane fuel (like 89 or 91) won't hurt the engine, it just won't provide any performance benefit in most cases. The owner's manual for the *specific* year and model of the Camaro is the definitive source for this information.