Another great topic for Hemis is the awesome valve train they have! Unique for sure and lots to talk about in reference to this subject! 1) Rockers.... - What motors had adjustable rockers and WHY? (seems to be a typical question) - When should adjustable rockers be used vs. stock non-adjustable? - Which ones are interchangable? - Rocker ratios for each make and model Hemi? (I know they're mostly the same, just a good bit of info) - Roller and billet rockers and WHEN they're needed? - Who sells them and who restores/remanufactures them? 2) Rocker spindles/shafts... - What is interchangable? - What needs to be considered for high performance applications? - Things to consider when rebuilding? 3) Valves... - Which years, makes and models had similar valves? - Special features of Hemi Valves that should be noted? - Manufacturers to consider for replacement valves and what to look for? - When should valves be replaced for various applications? - Keepers, guides and related... what to get? 4) Pushrods... (overlapping a bit from the cam and lifter topic) - What is interchangable from other makes and models? - Solid, tubular and adjustable pushrods for what applications? - When are stock okay to reuse? - Who makes them and what to look for? 5) Springs and related... - What springs for what applications? - When are stock springs sufficient and when should they be replaced? - Who makes them and where can they be purchased?