on a BLOWN motor as well...funny stuff.

Alright question...having my stock 6.0 heads worked with larger valves and porting job, I have a decision to make on how much to mill these heads. Is there any benefit to doing this with my setup (in sig)? I mean the lower the compression the more boost you can throw at it, but .010 mill is not much, but worth what if any? Should you always mill something to clean the "line" maybe?

Mill or not to mill?

thnx in advance

 

Surfacing .010" shouldn't cause any drama with compression. It should take less than 2cc of volume. Of course it depends on the finished chamber volume that the shop ends up with. Minimum surface milling will help ensure the head gaskets will seal both water and compression in their respective areas.

Good luck with the upgrade.

Richard

 

Thanks Richard...I am going with .005. Just to clean em up and like you say, make sure those gaskets will cooperate.