excess positive camber 440 A body

You have it backward, sir. Negative toe (front of tires to the outside) can decrease camber. It's positive toe (front of tires to the inside) that can give the appearance of more camber. This is because of the angle of the spindle in relation to the ball joint axis and SAI (steering axis inclination). Since the spindle does not travel straight in its steering path, but in an arc, this is why camber is affected.
I don't think that I have it backwards. I think you read it wrong. When the toe is in too far, forward motion of the car wants to jack the front up in the same way a snow skier points the tips of the skis together to slow down in low speeds. This causes the front to rise and the camber to go positive. The opposite is true as well. Too much toe forces the tires rearward while making the suspension want to compress.
Maybe we are saying the same thing but with different words?