What is the Fuel tank capacity of a 1977 blazer?

The fuel tank capacity of a 1977 Chevrolet Blazer varied slightly depending on the specific model and options. Most had a fuel tank capacity of 18 gallons. However, some might have had slightly smaller or larger tanks. To be absolutely certain, you should check the owner's manual for the specific vehicle or look at the fuel tank door (sometimes the capacity is stamped there).