MEGATRONSS

iTrader: (2)

What suspension mods should I get to reduce the feeling of floating at high speeds(100+)?
That feeling that the body o the car is floating on the frame?

SteveLS19057

maybe drop the front, or raise the rear .5 in maybe a full inch, and tighten it up a little, had my 85 camaro start to float at 130, know what ya mean and its scary, the trans ams make enough downforce to where i havent felt it yet but havent gone as fast yet. well see lol

leadfoot4

iTrader: (1)

How many miles on the car? It could be worn parts, such as ball joints, worn bushings, or tie rod ends. Or, as "SteveLS" was suggesting, aerodynamic lift, caused by the front being higher than the rear, allowing too much air to get under the car, causing lift.

MEGATRONSS

iTrader: (2)

67,000 it's an 02...and hmm, that actually makes sense because I'm on an eibach prokit and the rear is lower than the front by about 3/4 of an inch...but I can't lower the front anymore or it won't clear any speedbumps...anything else i could do?

JD_AMG

What shocks are you on and what other suspension mods do you have?
If something isn't broken (like a swaybar endlink) or very worn (like parts mentioned 2 posts above) Id put my money on shocks. Lack of shock dampening = floaty, loose ride like a boat, the car will feel like it doesn't settle down. Even with front end lift from bad aero, good shocks will have the car feeling planted. Factory shocks or drag shocks (Qa1, Afco, strange etc.) will give you this feeling. A sport shock like Bilstien, Koni, KYB, Penske, etc etc. will give a planted, firm feel, the opposite of floaty.

bene

iTrader: (16)

DO what he said... it will get rid of your "floaty" feeling in the car at high speeds.

MEGATRONSS

iTrader: (2)

Gotcha, I do have new KYB gas-a-justs up front though, but not in back....would this make a difference?

chopper

iTrader: (18)

There are plenty of cars going much faster than 130 mph on Strange and Afco shocks without feeling the float being described. If the owner of the shocks doesen't learn to adjust them they shouldn't use the brand of shock for the blame.

crazyelf

iTrader: (21)

My koni shocks made the car feel MUCH better.

JD_AMG

Im pretty sure the gas-a-justs are like stock replacements, were they real cheap?
You likely want a more performance oriented shock.

MEGATRONSS

iTrader: (2)

Nah, they weren't very cheap. Like $130 each, the AGX's are the cheap ones...they made the car handle way better too over the stock ones

JD_AMG

I just looked at KYB's website and they claim the "gas-a-just' shocks are for OEM replacements. And from what Im seeing the front AGX's seem to around the same price or more, and the rears are definitely more $$$ than the gas-a-just. (im looking at Summit's individual pricing for each shock).
I certainly don't doubt you noticed a difference, the stock decarbons suck, but if you can't find anything else wrong/broken with your setup then Id look into getting better shocks all around (maybe SLP bilstiens at least?).

Sam Strano

iTrader: (41)

You have a shock issue... namely a lack of rebound control. Gas-A-Justs aren't very good shocks.

As for cars going 130+, I'm guessing you mean at the drag strip, and they move all over the place. Those shocks aren't for stability, they are weight transfer and if you watch any car setup for drag racing they move around a lot.

To compare a Koni to a drag shock of any kind in terms of stability at speed is a joke.

Ghostintheshell

Shocks are likely. You should also take into consideration tires. Often over looked. I replaced the tires on my last trans am (old stock tires), and it was amazing.

MEGATRONSS

iTrader: (2)

Maybe I'm thinking about the other model kyb makes, I know there are 3 main ones.

And sam what would you suggest instead of gas adjusts? I still don't have new shocks in the rear. I'd really rather not go through changing the fronts again...

And I also do have old tires up front, they are bad. New bfg g forces in back though.

Would it make a big difference if I got new shocks in the rear?

02Z28LS1

iTrader: (2)

on a lowered vehicle, i personally wouldn't go with anything less than Koni 3/4 or 4/4 adjustables.

with the prokit & sportline springs, you need all the dampening you can get, and the Koni's will definitely be able to accommodate that.

if you go back to stock height, you could go with much less expensive shocks, such as the Bilstein HD's.

speed_demon24

iTrader: (6)

With my current suspension setup my car was still floaty at 130+. I'm guessing its more of an aero issue.

JD_AMG

What do you have the shocks set at? My car was rock solid at 140...

rabbit320

iTrader: (11)

what other suspension pieces can help with this? sways, tq arm, subframes...? im sure every piece does its job but didnt know if there was one that stood out other than shocks

speed_demon24

iTrader: (6)

Fronts were 4 turns from full stiff and rears 1/4 turn from full soft IIRC.