Overbore Displacements Calculation

(My attempt to explain the calculation)

400

  Inches
Cylinder Bore Diameter   4.1212"
Cylinder Bore Radius Diameter / 2 4.1212 / 2 =  2.0606"
Cylinder Head Area Pi * Radius * Radius 3.14159 * 2.0606 * 2.0606 = 13.3394 sq inches
Stroke 3.75"
Displacement/ Cylinder Area * Stroke 13.3394 * 3.75 = 50.023 cid
Engine Displacement Disp/ Cyl * # of Cyl 50.023 * 8 = 400.18
  1. To arrive at the Cylinder Bore Radius, divide the Diameter by 2.
  2. To arrive at Cylinder Head surface Area, multiply the value of Pi (3.14159) by the radius squared (Radius times Radius).
  3. Area of Cylinder Head surface multiplied by stroke equals Cylinder Displacement.
  4. Cylinder Displacement multiplied by number of Cylinders equals total Engine Displacement.

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