Dave,
The T1 camber plates are a plate with a notch in them, so yes, camber/caster is essentially fixed when you put them in.
They are designed to work the rest of the GM Performance Parts T1 suspension system (anti-sway bars, leaf spring, shocks, stiffer front a-arm bushings). They give lots of negative camber with this suspension. Not sure how much they give on the stock suspension, but I'm guessing just over -2.0.
I used them for the first time last week at the runoffs on the outside suspension only with good results.
