C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Sway bar and spacers

Thread Tools
 
Search this Thread
 
Old Jul 2, 2018 | 01:02 PM
  #1  
gnj3963's Avatar
gnj3963
Thread Starter
Instructor
 
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
Default Sway bar and spacers

Im trying to find out if anyone has put spacers in between the u clamp and top plate on the frontsway bar on a 1984 c4..i read it softens the front suspension..good or bad or just wrong???

thanx in advance
Reply
Old Jul 2, 2018 | 09:44 PM
  #2  
gerardvg's Avatar
gerardvg
Safety Car
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2009
Posts: 3,751
Likes: 276
From: Melbourne, Victoria, Australia
Default

Originally Posted by gnj3963
Im trying to find out if anyone has put spacers in between the u clamp and top plate on the frontsway bar on a 1984 c4..i read it softens the front suspension..good or bad or just wrong???

thanx in advance
Hi

The Spring and shock absorber rates are what governs the ride feel, try changing to non Z51 to shocks to begin with.
After that if still not happy go to a softer 85 on front and rear spring, HMP front and NYR rear is what I had on my 85.
The rear spring and shocks make the most difference as we are almost sitting on the rear suspension, so check your spring 3 letter code.

Cheers
Reply
Old Jul 3, 2018 | 07:37 AM
  #3  
gnj3963's Avatar
gnj3963
Thread Starter
Instructor
 
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
Default

Originally Posted by gerardvg
Hi

The Spring and shock absorber rates are what governs the ride feel, try changing to non Z51 to shocks to begin with.
After that if still not happy go to a softer 85 on front and rear spring, HMP front and NYR rear is what I had on my 85.
The rear spring and shocks make the most difference as we are almost sitting on the rear suspension, so check your spring 3 letter code.

Cheers
thanx...i have no problem with a stiffer stock ride..the car has new poly in the lower control arm bushings and swaybar..new lower ball joints and kyb shocks all around..problem is car feels like front tires actually lose contact with road going over bumps and dips..not saying they are but feels that way...
cheers to u too!
Reply
Old Jul 3, 2018 | 09:19 AM
  #4  
MatthewMiller's Avatar
MatthewMiller
Le Mans Master
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Aug 2015
Posts: 6,092
Likes: 1,972
From: St. Charles MO
Default

The spacer would create a looser fit of the D-bushings around the swaybar. This would be helpful if and only if the bar is somehow currently in bind in those two bushings. To determine this, disconnect the bar from the two end links and then see if you can move the arms up and down reasonably easily. You should be able to do with with your muscles - no jack or other leverage required. If this is the case, then this isn't your problem and the spacers will just create slop and non-linearity in the roll response. You should consider doing the same for the lower control arms: they should take minimal effort to move once disconnected from the upright. You may have bind somewhere in these parts causing your perception. Frequently, the kind of thing you're describing comes from poor damping (too much or too little, or too much compression and too little rebound or vice versa). Verify that your new dampers work properly. KYBs honestly aren't great shocks, but they should be able to cope better than this with a stock spring rates.
Reply
Old Jul 3, 2018 | 10:36 AM
  #5  
gnj3963's Avatar
gnj3963
Thread Starter
Instructor
 
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
Default

Originally Posted by MatthewMiller
The spacer would create a looser fit of the D-bushings around the swaybar. This would be helpful if and only if the bar is somehow currently in bind in those two bushings. To determine this, disconnect the bar from the two end links and then see if you can move the arms up and down reasonably easily. You should be able to do with with your muscles - no jack or other leverage required. If this is the case, then this isn't your problem and the spacers will just create slop and non-linearity in the roll response. You should consider doing the same for the lower control arms: they should take minimal effort to move once disconnected from the upright. You may have bind somewhere in these parts causing your perception. Frequently, the kind of thing you're describing comes from poor damping (too much or too little, or too much compression and too little rebound or vice versa). Verify that your new dampers work properly. KYBs honestly aren't great shocks, but they should be able to cope better than this with a stock spring rates.
I will check that..thanx
Reply
Old Jul 3, 2018 | 06:58 PM
  #6  
gnj3963's Avatar
gnj3963
Thread Starter
Instructor
 
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
Default

Originally Posted by gnj3963
I will check that..thanx
I did disconect the end links and i was able to move the bar having to use some force but think it was correct..Only thing i havnt changed up front are the upper ball joints. .I wll do this soon..see what happens then..
thanx for your help and HAPPY 4TH
Reply
Old Jul 5, 2018 | 02:03 AM
  #7  
65Z01's Avatar
65Z01
Team Owner
20 Year Member
 
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Default

I agree with above that shocks should match spring rate to get proper dampening. The purpose of the shock is to prevent loss of road contact that you are experiencing.

If running the Z51 springs I doubt that the KYBs match the needed shock damping rate.

I don't know were to find shock damping rates vs spring rates but such info would allow you to match up your suspension.
Reply
Old Jul 5, 2018 | 11:07 AM
  #8  
383vett's Avatar
383vett
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
Default

The 84 Z51 Corvette was the hardest riding Corvette ever. Changing the rear spring and all 4 shocks is what I did. I used a set of adjustable Konis on all 4 corners which did the trick.
Reply

Get notified of new replies

To Sway bar and spacers

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-1

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-2

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-3

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-4

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-5

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-6

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-7

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-8

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-9

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote




All times are GMT -4. The time now is 07:39 PM.

story-0
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-1
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-2
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-3
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-4
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-5
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-6
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-7
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-8
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-9
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE