Originally Posted by poncholvr
i still dont believe in breaking a cam in, jusst dont understand the point its hardened steel, oil pump works at the turn of the crank, ect...
that Flat tappets is a y good idea to break in..thats why the pasty cutting grit comes with the flat tappets so you put on the bottom of the lifter so the lifter seats with the cam lobes...they do cut down a certain degree..
rollers are a different story...i agree with you...but always a good idea to get heat in motor and seat rings..i think many of us old timers still refer to this as "breaking in cam" even if it really means seating rings with a roller...imo