trans00am

I have a chance to get a set of lowering springs from Eibach for $50. Are these worth getting even at this price point? I can only make out 3870.002 as a part number on the spring. There is another number, possibly 1600572 but it's hard to read. They only have around 8k miles on them. I will be replacing the original shocks in the process. What is recommended for good balance of handling and road comfort even with lowering it? How do they ride lowered compared to stock height? I'm looking at a set of Koni's SRT.T's at the moment. Also,is an adjustable torque arm mandatory when lowering these cars?

2000 Trans am M6
75k miles.

HCI2000SS

iTrader: (2)

I just got BMR lowering springs with the STR.T and love it. Ride and handeling is much much better than the old DeCarbons. For $50 I'd give them a shot. If you don't like them you could sell them for more than that probably

trans00am

I told the kid I would take the springs. Definately leaning toward the Koni's and if a adjustable torque arm is a must I have picked out a UMI tunnel mount.

HCI2000SS

iTrader: (2)

An adjustable panhard bar is more of a must do over the torque arm. You'll need to center the rear after you lower it

trans00am

Gotcha. I'll look into one.

HCI2000SS

iTrader: (2)

Yep it's very important to have when lowering, and with the drop that the Eibach springs give, I think you'll be happy that you bought one

trans00am

How much of a drop are we talking? I was hoping for about an inch just enough to take away the gap between the fender and tire.

HCI2000SS

iTrader: (2)

Which Eibach's do you have?

AnotherWs6

iTrader: (17)

You don't need a panhard bar when lowering.

trans00am

I can get a set of adjustable lower control arms and an adjustable panhard bar from Founders for $241 shipped. Probably going to do that.

HCI2000SS

iTrader: (2)

Ok then what would you suggest?

trans00am

The only part number I can get off of the spring is 3870.002. From what I can find is the pro kit. Could be wrong though.

HCI2000SS

iTrader: (2)

Ok if it is truly a Prokit then it's advertised around a 1.2" drop I believe, but sometimes with Ebiach springs they tend to lower more than the advertised rating

trans00am

Should these end up lowering the car more than I want what is a kit that won't break the bank that will give me the inch drop I'm looking for?

HCI2000SS

iTrader: (2)

The BMR or Strano springs would be your best bet. There's also the option of using spacers and whatnot to fine tune the drop you're looking for

Cpt.Derrek

iTrader: (13)

Those springs are going to drop you closer to 2.5"-3". When I had them ground clearance was a big issue and I'd scrape on almost every medium to large bump.

They do ride pretty well and handle pretty nice, they are soft enough to drive around in but will be stiff enough to handle at the track pretty nicely. Here's some picts of my bird with those springs. I still had the stock spring isolators and also wrapped the end of both ends of the rear springs with heater hose to prop it up just a tad more.

trans00am

Yeah 2-3in is too much for around here. I would hit my headers almost everywhere.

JD_AMG

2.5-3" Drop???
Where are you measuring from?
There shouldn't even be enough travel to achieve that drop in the back without resting on the bumpstops.
Is that your car in the pictures with the eibach prokit? That is roughly a 1.5" drop in those pics(unless you had a really really tall sitting factory height car for the before measurements). Sportlines that drop roughly 2"+ end up tucking the tires under the fenders on some cars, you can still see space between your fenders and tires.

Deeohgie69

iTrader: (3)

If you haven't bought the springs from him yet, do some research on here first. I believe I remember Sam Strano explaining about them in a thread somewhere. I had eibachs on my car when I bought it and all the stories I've read where the rear springs start sagging notoriously were true. My rears started getting worse in the short time I had it and I have all the documentation from when they were installed on the car at 274mi to when I purchased it at 11,613mi.

So it's not like they got driven on much and I do understand that they were still on there from 02-14. It may just be a certain series of them and I lucked out and got the sagging series, idk. I just wanted to give you a heads up so you can do some research first. I guess at $50 though, you could always buy them and if they start sagging in the rear, just replace the rears with a different brand.

Edit: Like mentioned before, the Koni str.t are a good all around budget shock, I've been running them for about a year now and have no complaints at all.

trans00am

I'll try and find that thread. I've seen a lot of good things about strano.