I blew my engine....

[Slammed70]

My trucks acting weird....we took a 20 mile trip to get some food. After the truck warmed up it started to make a ticking noise. At first I thought nothing of it due to the fact Ive gone about 8k miles without adjusting my rockers. But after a while it got louder and louder. Then I pulled into Subways parking lot I got to listening around for it. I laid my hand on a HOT valve cover to see if I could feel where to ticking was coming from. Its from the passenger side towards the front of the motor. I killed it, we went in and ate. After a while I forgot about it and when we came back the truck was kind of hard to start. It finally fired up but wasnt ticking. So we started our trek home. After a few miles it started making the same noises again. There was no loss of power, no drivabilty problems....just the goddamn noise. About a mile from home it just stopped. It got quiet again and was quiet all the way home.

Im baffled....what would cause a motor to tick intermentedlty?