Hi, my 1941 chevrolet coupe makes a very strange screaming/screeching noise.
When idling, the engine sounds fine and runs smooth. But when revving the engine in neutral, this strange noise is coming (I estimate at about 1000-1500rpm), at higher revs the noise disappears.
I took the belt off and ran the engine but the noise is still there, so water pump and generator are not the problem.
Does anybody have an idea what could be the problem?
