How far off does camber halve to be to cause pull?

[y5mgisi]

Im tryin g to figure out why my 78 (d44 front. all stock) pulls hard to the right. Its done it the whole time i have owned. I have checked the toe and it was dead even so i adjusted it to 1/8" toe in. Which made no difference. I also replaced the driver side ball joints which were very worn. THat also made no difference.

The truck pulls pretty hard. You have to keep a constant pressure on the wheel to keep it heading right. If you let go of the wheel, it doesn't quite "dart" to the right, but it goes right. And not just a slight slow drift. Somewhere between a dart, and a slow drift. MAybe call it a hard drift. Anyway, the front end seems to be in pretty good shape. The tires appear to be perfectly straight up and down with zero camber. Also the truck stops straight with no pull from the breaks.

So my main question really is, if my camber looks perfect, could it actually be bad enough to cause such a significant pull?