What is your camber setting at ride height??? Doesn't seem that 2 degrees of camber change in 5" of travel would be too much.... The suspension will only go to full deflection when you hit a bump or really hammer it into a turn. Will you be running a rear sway bar? With a rear bar, the camber change would be even less. Under normal driving, it would seem the change would be less then 1 degree....

I which I could be more specific, but without being there to see your suspension work, it's kind of tough. Jerry is probably a whole lot more current on a Vette IRS then I am...

We used to play with rear camber on circle burners, used the same method as the NASCAR guys do. Never really did see any big results, either positive or negative but we were running on dirt, street use and paved tracks require a lot "tighter" specs on suspension then a dirt car....

Oh yeah, when you do all your suspension measurements, make sure you have the car "loaded" properly with the correct total weight and front to rear weight... Heck, bring it over and we'll put it on the scales, too, and have some real fun!!!!!!!