MS4 to MS3 Cam
#21
#23
TECH Apprentice
iTrader: (2)
plan on rechecking valve springs @ 15k miles. if all is okay, ill check again @ 25k miles. will more than likely change them out after 30k regardless of how they are. i do beat on mine fairly often. not much track time, but lots of high rpm pulls. ms3 cam gets nasty above 5k or so.