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.
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).
408
336.6
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.
In cubic inch displacement or cubic centimeter displacement or HP (horse power).