Cubic Centimeters
A cubic centimeter (cm³) is the volume of a cube 1 centimeter on each side, and is the same as a milliliter. Engine sizes are quoted in it, so a 1,600cc engine is 1.6 liters.
US dry gallons
A US dry gallon is a unit of volume measurement normally used for dry goods such as grains, fruits, and vegetables. It is about 4.40488 liters or 0.16 cubic feet.
Note: The US dry gallon is different from the US liquid gallon, which is used for measuring liquids and is slightly smaller in volume.