A step-by-step solution:
There are 16.3871 cubic centimeters in a cubic inch. So 383 cubic inches is equal to 383 * 16.3871 cubic centimeters. There are 1000 cubic centimeters in a liter, so 383 cubic inches is equal to 383 * 16.3871 / 1000 liters, which is equal to 6.28 liters.