Xavier I'll tell you a story that will make you feel better. My son finished putting an engine together and dropped it into a camaro - 305 chevy. He got it from a friend who had assembled the bottom end. The friend had forgot to put the shaft in the top of the
oil pump that connects up with the distributor. The
oil pressure light in the car did not work. He drove the car around the block to warm it up, after setting the timming. His first clue was the lifters were tapping. This engine ran a good 10 minutes, with no
oil pumping.
The friend had coated all bearings with assembly lube and my son had done likewise with the cam. Nothing in this engine was hurt. Put a shaft in and it ran 75K until he sold it. Hope your as lucky.