When it happened I stopped and it sounded like piston slap so I shut it off started back up kept doing had strong oil pressure so kept driving it cause I didn’t have a choice when giving it gas the sound of slap went away sounded like a normal engine running was low on power though and was spitting and sputtering then about 3 miles later heard whatever falling down into the oil pan and died wont idle with out giving it gas and only will go up about 300rpm...... also have a video of it running if you’d like to hear for yourself any help would be appreciated before I go spend 800 on a junk yard 5.3