Please Help Me =(

[HotRod73]

Ok, so my 87 swb has a new issue... when you first start it up there is a squeek like a belt and only does it when u rev up, could be the belt? when you put into reverse it takes like 5-10 seconds then u can feel it lightly kick in, my truck also does the squeek if i hammer the throttle and it squeeks right before it shifts into the next gear or if i go 55mph or faster it will untill i slow down... i was told my torque converter may be going bad? is the squeek a belt? sometimes it feels as if my truck is bogging down and then it will catch up with its self and go.... whats the deal? its a 305 tbi with a th400 trans