Chevette Spring questions

[Xnke]

Ok, so i'm looking into spring solutions for my car. I've got new stock struts, and my springs are in good shape, but I've read about it; and while they aren't sagging, sitting in the car i can bounce it quite a bit.

 

I will be doing a lot of highway driving, and the highways here are mostly pretty smooth, but when they get rough it's a wavy roughness, rather than potholes or breaks in pavement.

 

Now, all I can find is that some people are using Moog 6556 springs, for a chevette, but no one says if they are using them on all four corners, front only, rear only, or what. I know that you'd have to cut coils on them to get them to the same ride height, and have the following data:

 

Moog 6556:

 

ID = 3.45"

Bar Diameter = .5"

Load rate = 808lbs

Spring rate = 197lbs/in

Free height = 13.75"

 

Moog 6558

 

ID = 3.45"

Bar diameter = .5"

Load rate = 861lbs

Spring rate = 197lbs/in

Free height = 14.06"

 

I am under the impression that the stock springs are around 100lb/in rate, and have no other information on them.

 

Would changing to the stiffer chevette spring be an upgrade, or an annoyance, for a car that spends 90% of it's time on the street, if not more? I do enjoy a car that turns with minimal body roll, but don't want a bone-jarring ride either.

 

Also, are people putting them in on all four courners the same; or replacing the back springs and moving the back springs to the front, or what?

[ZR8ED]

It has been many years, so I can't talk part numbers with you, but I have used Chevette springs on all 4 corners on the street/track, and have been impressed with the bang for your buck. Street manners are just fine, though I do run a tokico shock. I know of and have driven two other modded 280's with the same suspension setup as mine, and they too run well on the track. We all did these mods back in the day when coil overs if developed for our cars, were worth more than our cars, and just not practical for the street.

 

In my current setup, I no longer have the chevette springs up front. I am using a cut stock rear spring from a 280. (this is due to the midship configuration of my VG and reduced weight on the front end) The chevette springs caused the front to be too stiff after the engine swap, and it plowed badly on sharp turns.

 

Scott.