I have a 72 Challenger with a big block. When I make a pass, the fan belt comes off. The belt is a "V" belt and drives the water pump and alternator. I have checked pulley alignment and I can't find anything off. I have tried different width belts. Right now I have a pretty skinny belt on and seems to stay on but it is not right. I really do not want to go with a serpentine setup. Any ideas?
