Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 2004 dodge ram 1500 4.7 v8 rebuild heads break in procedure › 2004 dodge ram 1500 4.7 v8 rebuild heads break in procedure January 20, 2020 at 5:02 am #895807 Richard KirshyParticipant Usually break in lube on the face of the lifters and the 20 minutes at 2k. Flat tappet break in lube in the oil as well.