Sway bars that is? What is the difference/diameter between the z51 sways and the zbars? I have a C5 and want to move to C6 sway bars but wonder if there really is a difference worthy of the effort? Any advice? oh yeah nice ride

C5
Base: 23mm-front / 19.1mm-rear
Z51 (97-99): 25.4 mm-front / 21.7 mm-rear
Z51 (00-04): 28.6 mm-front / 23.6 mm-rear
Z06: 30.0 mm-front / 23.6 mm-rear

C6
Base: 25.5 mm-front / 17.5mm-rear
Z51: 31.0 mm-front / 25.6mm-rear
Z06: 31.0 mm-front / 27.9 mm-rear

Aftermarket
Hotchkis: 31.75 mm-front / 25.4 mm-rear
Addco: 32 mm-front / 25.4 mm-rear
Addco: 35 mm-front / 25.4 mm-rear
Pfadt (Street): 32 mm-front / 26 mm-rear
Pfadt (Pfatty): 35 mm-front / 29 mm-rear
T1 (GM Racing): 38.4 mm-front / 27.5 mm-rear


Relative Stiffness (Provided by Pfadt http://www.pfadtracing.com/ )
C5 base: 0.4
C5Z06 : 1
C6Z: 1.2
Pfadt Standard: 1.5
Pfadt Pfatty: 2.5
GM T1: 3

Thanks Chewy!
I will stay with the C5z bars insufficient improvement to justify

That's a lot of data that Chewey provided, but what I didn't see was that Pfadt's bars are adjustable and give you a range. When you combine front and rear adjustability, it really allows you to dial in the car. If I seem to be a fan of Pfadt's products, I am. I had been looking for adjustable sway bars for the Vette for years.