[Low Elco]

My experience has been that on a v-belt system the ac belt especially needed to be Hulk Hogan tight. Might also consider cleaning the belt track in the pulley with lacquer thinner/brake kleen and 80 grit paper, I've had that help. I am no expert and will be converting the 87 over to serpentine. I hate v-belts with a passion. Sorry you got caught in a hair-ripper, Bman. Sad part is, that stuff is so bygone, even the techs at a ac specialty shop will probably blank stare ya. Hope you get it goin.