OH WELL.....

[Skools Out]

Take a wooden pole like a toilet plunger handle. (MUST BE WOOD) Crank the motor and put one end against your ear and place the other end in places against the block, valve cover oil pan sides of the block. That will tell you where the noise is coming from. Use the stick as a Stethoscope to find your noise. That will locate the problem.

Old Racers trick for finding a noise in a motor.