I know this topic has been covered in depth. I have spent a couple hours reading and several more hours trying to figure this out. 400 hp SBC. I CANNOT get rid of the squealing belt that goes from the crank, around wat pump to alt. I know it is this belt as I have taken the others off. The squeal is not constant, it seems to occur mostly on deceleration. I have tried: different belt, different alt, different bracket system, TIGHT belt, loose belt. I have an edelbrock high volume water pump. I am wondering if this pump overcomes the belt since there is not a lot of belt coverage on the water pump pulley. ANy help is greatly appreciated. I to attached PICS. The pulleys are aligned. GM pulley on the crank and the water pump.