Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 3.3l engine headbolts › 3.3l engine headbolts February 1, 2012 at 11:00 am #439823 EricTheCarGuyKeymaster You need to replace them. You can’t see the stretch but they bolts are designed for a one time use and if you reuse them they could break on you, don’t risk it replace them.