88Burban

So, I developed a slight tick last week, which quickly turned into a knock, and in my attempt to get her home, the engine seized. I'm hoping to get my hands on another (used) motor and get a rebuild kit shortly after getting it bck on the road. But I still would like to figure out what caused my issue in the first place. The motor had oil. Infact, the only issue my motor had in the first place was an exhaust leak on the passengerside between the manifold and head. I'll be taking her apart in the morning but still. If anyone can help, please let me know. thank you.