Milling a JT-03 head

old 66

New member
Was wondering how many CC's you loose milling a head every .010 ? ( 10 thousand ) JT-03 head . Or how much to mill per cc ? I decided to build my own stock motor this year . I will have to tell you . You will spend about as much as a Do It Yourself kit . But I want the satisfaction of my own build from start to finish .
Iv never had to mill a head on these engines, but have been wondering, do you shorten the pushrods when a head is milled, say .010 to .020? what about .060?