FAQ: Aftermarket Lowering Springs

I guess that's true. I'm just not sure how I feel about the W body springs. Sure, they might fit, but the W bodies are a lot lighter than Rivs. You have to kind of wonder what that's going to do for ride/performance.

http://www.grandprixforums.net/threads/95314-Eibach-and-ZZP-springs

If someone wants to test if the front GP springs will work for us, there's a good chance to try it right there.....

I picked up a set of stock GP springs today as part of a trade. Slapped them on a pair of old struts (98+ style) and guess what? THEY FIT! Now if somebody good at math wants to help me find the right set of aftermarket springs to buy I'll take the leap and do it. Looking for a 1-2" drop, but don't forget the front end of the GP is lighter than ours so a 1" drop for them might be more for us.

Very nice man! Just an idea, maybe look into front lowering springs designed for a gxp since that has a heavier front end? (At least I'd imagine)

Not sure if they make different sets specifically for the gxp.

Sir Psycho Sexy wrote:

Very nice man! Just an idea, maybe look into front lowering springs designed for a gxp since that has a heavier front end? (At least I'd imagine)

Not sure if they make different sets specifically for the gxp.

Now that is an idea. Not sure about specifics either, but if anything I might be able to find how much a certain spring would drop a GXP vs a regular GP.

No cash for the front coil overs eh?

Karma wrote:

No cash for the front coil overs eh?

If you want to fund me a pair of springs for R&D I'll gladly take it

My springs will be up for grabs once I bag my Riv.

charlieRobinson wrote:

My springs will be up for grabs once I bag my Riv.

But I have dibs tho

Sir Psycho Sexy wrote:

charlieRobinson wrote:

My springs will be up for grabs once I bag my Riv.

But I have dibs tho

I think I'm going for a set of SSC springs anyways

Sir Psycho Sexy wrote:

charlieRobinson wrote:

My springs will be up for grabs once I bag my Riv.

But I have dibs tho

Shhh... they don't know that..

hey guys was messing around on rockauto at work came across something. the moog spring rockauto offers as a replacement for our cars is MOOG 60230

info it lists
Bar Diameter - Inches 0.60
End Type 1 Pig Tail
End Type 2 Pig Tail
Free Height - Inches 14.50
ID - Inches 5.65
Installation Height - Inches 7.50
Load - lbs 1121.00
Spring Rate - lbs per inch 160.00
Spring Type Constant Rate


and here's moog 60232

Bar Diameter - Inches 0.60
End Type 1 Pig Tail
End Type 2 Pig Tail
Free Height - Inches 13.77
ID - Inches 5.65
Installation Height - Inches 7.50
Load - lbs 1004.00
Spring Rate - lbs per inch 160.00
Spring Type Constant Rate

would this possibly drop the car just a little ?

im re-doing my front suspension slowly piecing stuff together
wouldn't mind giving these a shot if some of the suspension masters give me a thumbs up !

It's possible that they would work, but if you really want to experiment grab a set of Grand Prix springs (W-Body Store looked to have the best ones for our application, followed by SSC). I was going to do it here within a month or two but if somebody else can confirm they work I'll make it happen ASAP.

Yeah I do like the idea of dropping the car a lot but there isn't really a way of dropping the back other than leaving the air struts with no air in them.. not a good idea for the longevity of the struts.

I figured if i can get the car a bit lower in the front then i can adjust the back accordingly so atleast they will have a small amount of air in them

GP Springs on my junk 98+ strut. Look good to me, how about you guys?

matt270avian wrote:

GP Springs on my junk 98+ strut. Look good to me, how about you guys?

Son, you're a gosh dang pioneer. Are you installing for test drive?

charlieRobinson wrote:

Son, you're a gosh dang pioneer. Are you installing for test drive?

As long as nobody sees any issues (and as long as I don't run into any) I'm installing them permanently.

The only thing I would be skeptical about is the difference in weight between the Grand Prix and the Riviera. But, with the 300+ pound difference, I almost wonder if that would lend these springs to be perfect for lowering.

KnottyEagle wrote:

The only thing I would be skeptical about is the difference in weight between the Grand Prix and the Riviera. But, with the 300+ pound difference, I almost wonder if that would lend these springs to be perfect for lowering.

If you look at the GXP it weighs close to the Riv, plus it's really front heavy so it SHOULD balance out.........

Official test/install date is Friday night and/or Saturday.

Real quick question......

So the front springs fit in the strut. So what. What are you gonna do about rear springs? GP's have struts. Rivs do not. What good is a set of GP springs if you cannot use them all?

Abaddon wrote:

Real quick question......

So the front springs fit in the strut. So what. What are you gonna do about rear springs? GP's have struts. Rivs do not. What good is a set of GP springs if you cannot use them all?

Look at my sig and this thread

https://rivperformance.editboard.com/t7854p135-custom-adjustable-front-coilovers-for-all-years-fabrication-required?highlight=coilovers

I know. However, for the sake of EVERYONE looking for different spring combos and lowering options, front GP springs are useless. No need for people to get the wrong idea and just start buying stuff that won't work.

That is all

EDIT: Modifications specific to your own car, and not for everyone else, should be posted in your own thread, NOT in the FAQ section. People imply things when they read this stuff.

Abaddon wrote:

Modifications specific to your own car, and not for everyone else, should be posted in your own thread, NOT in the FAQ section. People imply things when they read this stuff.

Sorry... Just figured it should go in the lowering springs thread since some people might like a slight rake to their car, raise/lower the rear with the air shocks, find something that works on the Lucerne and adapt it or go completely custom....