2003 Polaris 3 PRO X Factory Service Manual, Page 35Get this manual
ENGINE HEAD CC REMOVAL EXAMPLE
Total number of CCs to remove from the headOld IHV Desired IHV Removed CCsIHV IHV2 Removed CCs1.299 cc Stroke Displacement 2.54 cmin
Number of inches to remove from the cylinder head to equal cc
I0.01186
To find out how much to cut off, multiply the number of CCs you need to remove by the number of inches to remove per CC: Thickness to removeRemoved CCs