When building my 49S10 with 350V8 I added a serpentine belt drive from an 89 Caprice. Recently, after changing out the AC compressor I have developed a belt squeaking noise. I did notice it occassionally before changing the compressor but it is all the time now. I can treat it with belt dressing and it will go away....for awhile and then starts up again. I have checked the alt., ps, water pump, and ac compressor and all are rotating freely. I even changed the belt tensioner pulley but to no avail.
The tensioner seems to have plenty of resistance on it. I also noticed some fine rubber shavings but cannot find anywhere that seems to have interference with the belt. Any ideas on what might be causing this? Thanks.