Originally posted by MRPopo61
What is involved in upping the displacement of an Engine?
Boring and/or stroking.
Bore the cylinders to make their diameter larger.
Stroke the crank (weld material on the journals and then regrind them offset to increase the stroke.)
Displacement = Bore^2 * Stroke * NumCyls * 0.7854
(e.g. 2.5L V6: B=8.45cm, S=7.42cm, D = 8.45^2*7.42 * 6 * 0.7854 = 2496.6cc )
An increase of 1mm in the bore (stroke stock) results in a displacement of 2556cc. An increase in the stroke of 1mm (bore stock) results in a displacement of 2530cc.
Regardless of how you do it, it isn't going to be cheap.