Squealing Belts?

After I installed a cam and 4 barrel carb, I herd what I thought is belts making noise. I fiddiled with the belts for a few months without success so I removed them and started the engine. The squeal was still there. I removed the damper and checked for something possibly rubbing. After close insepection, I could find no signs of anything that would cause the noise. The only possibility I could think of is the crank seal, that had only a small amount of oil on the sealing surfaces. I pushed some grease into the seal area and reassembled the parts. The sqeal still occures upon startup. Is it possible that the seal is too hard putting too much pressure on the surface of damper sealing surface? There is less than 200 miles on the engine sinse installing the cam.