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Message: [QUOTE="MS1, post: 1545773, member: 27510"] RE: 2008 F-250 6.4 (215k, Job 1) I'm in the midst of rebuilding - or more so 'Replacing', the top end of my 2008 6.4. I have installed the new valvetrain components on new KDD Cylinder Heads (Stage 2, 100 lb Valve Springs). Everything torqued to spec (did rockers first) but when I hand crank the engine the pushrods only 'snug-up' to the rocker arms. The rocker arms themselves do not discernably move or compress the valve springs. The top of the rockers are essentially flush across the head. I HAVE checked the cam through the block and the lobes look good, at least to my to my relatively untrained eye. [LIST] [*]Did I miss a step? [*]Do I need to Compress the valve springs for the install? [*]IS this normal (???) [/LIST] Common sense would tell me that the replacement pushrods are too short, but that seems to be the route even Ford has gone with the 6.4 pushrods. [U]Here are the components I'm using (All are New Parts):[/U] [LIST] [*]KDD Heads w/Stage 2, 100lb Valve Springs[/URL] [*]Elgin Industries Hydraulic Roller Lifters (HL-2201S) [*]RCD Chromoly Pushrods, .080 Wall (Replacing the 3/8" longer OEM w/balls on the ends) [*]OEM Rocker Arms and Valve Bridges [/LIST] Any insight or thoughts would be greatly appreciated as this is my work truck - and only vehicle, so I've really gotta get this Sucker back on the road, but I can't continue until I get this figured out. [I]Thank You![/I] [COLOR="Gray"]*Genesis for Rebuild - I had what I thought to be a stuck injector, turned out to be a broken rocker arm. Decided to put the time/money into it, as the truck has been fantastic for 50k+ miles even with somewhat regular heavy towing use and is already otherwise 'set-up' for my work.[/COLOR] [/QUOTE]