The power of a fan cannot be measured in cubic inches.
406 cubic inches .
350
BIG BLOCK OR SMALL BLOCK DOES NOT DEPEND ON CUBIC INCHES . IT IS THE DESIGN OF THE BLOCK ITS SELF.
approx. 366cuin
In. and three superscripted- small and upper right corner
1851cc's or cubic centimeters
200 cubic inches is equivalent to a cube with sides measuring approximately 5.37 inches in length. This volume measurement is commonly used in calculating the capacity of small containers, such as a small storage box or a water bottle.
408
336.6
A cube with a volume of 2.3 cubic feet would measure a little less than 7 inches on all sides (6.9187 inches approximately).
In cubic inch displacement or cubic centimeter displacement or HP (horse power).
The most obvious diff is 350 CUBIC inches is much small that 496 cubic inches. Also likely the 350 is a small block where as the 496 is a big block. The 496 will be a physically appearing bigger motor if that is the case. With great displacement also comes greater power or power potential. A mildly modified 350 can produce more power than a stock 496. Big Block Chev weighs in at around 675 Pounds and a 350 small block weighs in at about 575 pounds.