Quote:

DO NOT MILL 6.1 HEADS.

You only need to run something about a 219/223. That has taken LX's into the low 11's with heads

The 6.1 doesn't need the higher compression. You can't run bigger than about 223/227 without running into serious piston to valve clearance issues.



When u day not to mill 6.1 heads is it because the decks are to thin? Or does it take away to much piston to valve clearance? Also, why does the Gen III get noisy valve train if you mess with the geometry? Sorry for the rapid fire questions just trying to learn about these engines