Milling head for higher compression?

[drhach]

When we normally surface these heads, it is done evenly across the entire head. This lowers the head ( and cams ) in relation to the crankshaft and thus retards the cam timing. You can take quite a lot off of these older heads. The limit factor is the intake seat.

Jay

I was typing a question about surfacing heads and how it changed the cam timing for a non-angled mill. As I typed it and reread your post, I answered my own question. Thanks for the post. I thought that a straight mill would not change cam timing, but now I see that it would and it makes perfect sense. Damn, in spite of my best efforts, I learned something today.