I had no idea that a fuel pump could make that kind of noise..Mine is pretty old, and was gonna take the longest thing I could find and stick it on there to listen...Then, I looked up and saw my head was planning to get a haircut on the fan...Guess I got to look around..I have a shop manual, is the fuel pump like the sbc and has a push rod, or does it have a lever? Hate to pull it out and have the rod fall into the oil pan..I really think it sounds like the water pump though..Any help, Steve