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 4:04 am #895802 Richard KirshyParticipant Only concern would be if you replaced the cam and lifters. Those require special break in procedures. If it is only the heads, I would drive it normally for the first few 100 miles.