the reason for the negative camber on the majority of slammed bugs you see is due to the swing axle transmission. This is prevolent in pre 68 bugs. The on the axle there is an inboard joint so it can pivot up and down for suspension's sake, but no outboard joint. so the poor wheel is just along for the ride. it follows the arc of the axle as it moves up and down. kinda like this (---
so you might have the car lowered like this /----\
but when you lift the rear of a swing axle car, the opposite happens: \----/
Example: my 67 baja
in this pic you an clearly see the lack of an outboard joint
so you might have the car lowered like this /----\
but when you lift the rear of a swing axle car, the opposite happens: \----/
Example: my 67 baja
in this pic you an clearly see the lack of an outboard joint