Are v6 spring smaller or will they lower the a z28 if installed. Is the spring rating less then the v8. Will they work?

 

I've used the V6 springs in the rear for some T&T at the track. They are a softer spring but taller than the V8 springs. The rear sat higher with them in but when launching they would compress quicker and transferred the weight a little faster. When compressed, they are still taller than the V8 springs. Hope this helps.

I would not recommend putting the V6 springs on the front of a V8 car.