96 1500 won't start after repairs

[Siggertx]

Update number whatever lol. Pressure regulator replaced, went to crank it and heard a pop clank. Motor came to a halt. I suspect timing chain...

 

[Siggertx]

Indeed a timing chain, however I also found that none of my injectors were fueling. They were getting the pulse signal but not releasing a drop. Parts house had a reman unit in stock. This poor old rig is now running. Thank you very much for your help!