I just spoke to the PO and he told me my car has the SLP progressive rate springs that lowered the car about 1/2" in the front and about 3/4" in the rear.

I read that the SLP sways are Addco sways.

Are the SLP springs really Eibach progressive, or another brand?

He told me he bought an "autocross" suspension kit, and he had the same complaint i have with the rear being too stiff.

FWIW, i looked under the car this weekend and all the bushings are red. are there different types of urethane bushings based on the color, or are all the urethane bushings for our cars red?

Again, TIA

 

To the best of my knowledge, this is in fact true. When I bought the level 2 kit for my car, the Eibach rep at the Camaro show told as much. I have no reason to doubt him.

 

SLP spirngs are MADE by Eibach, but are not the same as Eibach springs you can buy from ayone else. They are made for SLP. Eibach's aftermarket springs are what Eibach feels the car needs.

 

Intersting info. Can you shed a little more light on this subject, Sam? What are the Eibach rates?

BTW, since we have you here, what does a 35mm sway cost, and is it imperative to get upgraded mounts with that bar. I seem to recall reading something to this effect somewhere, but I'd just like you to confirm or deny this.

 

so the sways and trailing arms were designed to work togeher.

the springs were designed to work with other sways and shocks,

and the shocks were designed to work with nothing else listed.

he said it was an autocross package so im wondering if it was designed to run with significantly less rear pressure to be balanced?

also, how do i tell if the sways are solid or hollow?

Sam, what looks right or wrong with the setup on the car? at this stage i'd rather not call you and take up a half hour of your time while i am still going in circles trying to figure out my likes and dislikes.

 

Eibach has different springs. I pretty much only use one of the Pro-kits. The LT1's are quoted @ 377-600 front and something like 90-160 rear (can't remember right now). The LS1's are 400 linear front and 90-137 rear.

The ST front bar is $148.00 and comes with all new hardware and urethane bushings. As for the upgraded mounts. Not needed. Those who autox a lot, especially with softer springs (like FS cars) tend to break them, but I've never broken on cars with stiffer springs. Even if you do, the part is like $7.

 

Thakyou so much for the info.

The price on the ST bar looks quite good.

Will be contacting you sometime after I get done the M6 swap.

 

Sam,
I just spoke to SLP and got the specs on their eibach springs.

Front Rear
K1 285.4 85.1
K2 492.9 191.5

It looks like my fronts are proportionaltely softer than the rears compared to the figures you recalled from your eibachs.

could this be why i think the rear is too bouncy and it not be the rippie bilsteins?

Thanks again

 

Tom,

We're probably going to have to talk. Trouble with the net is everything can make some sense, but nothing can ever be clearly explained.

What's wrong with your car specifically? I know I'd be looking into the shocks and the springs. I can't remember what LCA's you have, but if they have urethane bushings it might be hurting especially with a bigger than stock rear bar (both add roll stiffness) and you already have stiffer springs too. All those things together can easily add up to being too much. And considering I'm not sure what's up with the shock valving, it may or maynot be an issue. That's why we'll have to talk, so I can ask questions.

 

Sam,
right now i have mismatched tires front and rear because i set the car up to autocross last weekend, then my knee decided to lock up.

I bought new Dunlop winter sports (225/55/16) that should go on the car as soon as one 10 spoke 16" rim arrives. when i have a set of matched tires and a fresh alignment i will be able to figure out exactly what is going on. Maybe i just dont like the handling of the Comp TAs that are on the SS 17" rims because the rear feels a lot better with the old goodyears on the salad shooters.

I appreciate your help.