Overbore =??? bore in "s

[court1100f]

Ok First off my Uncles Double Master ASE Certified and he stated when asked that for every .030 over you go thats translates into about 5Cid in end displacement so .060 would net you an extra 10Cid My questions two fold. 1. is it 5Cid or 6Cid. 2nd. what does .030-.040-.050.060 look like in bore diameter??? I.E. 4.10"@.030 over or 4.15"@060?????? I need to know this info for my Calculations Thanks in advance Gentleman

[Wes]

Well your Uncle is right it is @ 5 ci for 350 engine. A 4" bore with a .030" overbore is 4.030. 4.1 would 4.130 at .030 over, and 4.15 would 4.210 at .060.
Pi x (1/2B)2 x S = Volume of One Cylinder, multiply your result by 4 6 8 which ever engine you are working with.