Clint, just got an answer for you on the ACMOC site: "The book I have is for the D333 6 cyl. but basically the same engine except two more cylinders & it says cold setting is .015 for the intake valves & .025 for the exhaust valves. SJ" SJ is an old retired Cat mechanic who knows his stuff. http://www.acmoc.org/ACMOC_BB/showthread.php?t=1579 Richard