C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

68 rear suspension

Thread Tools
 
Search this Thread
 
Old Jul 24, 2011 | 09:16 PM
  #1  
68noob's Avatar
68noob
Thread Starter
Cruising
 
Joined: Jul 2011
Posts: 10
Likes: 0
From: littleton colorado
Default 68 rear suspension

Hi all:
Looks to me like this site should prove invaluable to me as i start to get my Vette back on the road. It's been in the garage for about 7 years, ever since i rebuilt the motor. Not a hot rod, but a nice street 350.
I just pulled all of the rear suspension out and have a couple questions. First, the rear struts are considerably bowed. Is this normal? figured they would be straight.
I also saw where some young guy had done an excellent job of documenting his rear diff rebuild with lots of great pics. Problem is i can't find it again. May not attempt it on my own, but would like to print it out.
Lastly, the trailing arms look pretty good overall to me, any thoughts on Ecklers for parts and rebuilds. I have ordered a few things in the past (such as gas tank) which seemed fine.
Anyone in the Denver Colorado area that could recommend shops?
Reply
Old Jul 24, 2011 | 09:52 PM
  #2  
gcusmano74's Avatar
gcusmano74
Drifting
 
Joined: Mar 2011
Posts: 1,886
Likes: 9
Default

The struts should be straight. If the struts are bowed, they are damaged. Scrap them and get new ones. If they are already bent, they may flex under high cornering loads and create a variable camber/toe situation, and the car will feel real squirrelly.
If you want to rebuild the trailing arms, and the front bushings have failed, use a stock type front rubber bushing, for a street car. A poly bushing will definitely increase the noise, vibration and harshness from the rear suspension.
Reply
Old Jul 25, 2011 | 06:37 AM
  #3  
Alan 71's Avatar
Alan 71
Team Owner
15 Year Member
Active Streak: 120 Days
Community Influencer
Top Answer: 5
 
Joined: Sep 2006
Posts: 31,283
Likes: 4,373
From: Westminster Maryland
Default

Hi 68n,
The parts dealers that I've had good experiences with are ZIP Products in Virginia, Corvette Central in Michigan, Paragon Reproductions in Michigan, and Wilcox who has a good presence on this Forum.
You do need to be careful with parts because often they are not just what you hoped they'd be. The configuration and quality of parts continues to be a problem for restorers, especially interior parts and exterior bumpers and trim.
Often restoring your original parts is a good alternative.
Regards,
Alan

I/We would love to see some pictures of what you're working on.
Reply
Old Jul 25, 2011 | 09:06 AM
  #4  
Rally68's Avatar
Rally68
Burning Brakes
 
Joined: Sep 2008
Posts: 805
Likes: 5
From: Naperville Illinois
Default

Wear in stub axles/rear suspension parts can create a situation where the take-up in the strut rod camber-adjustment cams is not enough to properly set rear camber; as a result, helpful alignment techs have been known to bend the rods. My driver's side rod was bent in this manner.

search posts by GRT1999 and stinger12 for differential rebuilding pictorials. helped me a ton.

Ecklers is fine for parts, but if you are talking about having a vendor rebuild your trailing arms/RW bearings, there are a number of people and shops who specialize in this work. Doa search of this forum, and make some phone calls.

Good luck!
Reply
Old Jul 25, 2011 | 10:19 AM
  #5  
682XLR8's Avatar
682XLR8
Safety Car
Veteran: Army
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Dec 2005
Posts: 4,270
Likes: 20
From: Central Michigan
Default

another 68!

Here's the thread you're after, I was checking it out as well

http://forums.corvetteforum.com/c3-t...ild-paper.html
Reply
Old Jul 26, 2011 | 07:34 PM
  #6  
68noob's Avatar
68noob
Thread Starter
Cruising
 
Joined: Jul 2011
Posts: 10
Likes: 0
From: littleton colorado
Default 68 rear suspension

Originally Posted by 682XLR8
another 68!

Here's the thread you're after, I was checking it out as well

http://forums.corvetteforum.com/c3-t...ild-paper.html
Thank you for the link. Not the one i had in mind, but a goodone none the less.
Thx again
Reply
Old Jul 26, 2011 | 07:36 PM
  #7  
68noob's Avatar
68noob
Thread Starter
Cruising
 
Joined: Jul 2011
Posts: 10
Likes: 0
From: littleton colorado
Default

it may be diificult for me to find a picture of the car before i started work, but i will try to put in a couple of the work in progress
Reply
Old Jul 26, 2011 | 09:08 PM
  #8  
gcusmano74's Avatar
gcusmano74
Drifting
 
Joined: Mar 2011
Posts: 1,886
Likes: 9
Default

Many (maybe 20?) years ago I sent my rear bearings to Van Steel to rebuild, and they came back damn near perfect. They are still on the car, with no problems.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

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

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

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

 Michael S. Palmer
story-7

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

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

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

 Verdad Gallardo
Old Sep 12, 2011 | 06:54 PM
  #9  
68noob's Avatar
68noob
Thread Starter
Cruising
 
Joined: Jul 2011
Posts: 10
Likes: 0
From: littleton colorado
Default

posted a few pictures of my68 project. They show the rear suspension removed and the start of cleaning some rust to get ready for painting. I intend to clean and paint all underneath before putting anything back. Notice the "bowed" strut rods. was considering rebuilding the diff myself, but am having second thoughts. what can anyone suggest to prep cleaned parts for paint (rust converter / primer). doubt that i will ever get all the rust.
Reply
Old Sep 12, 2011 | 07:06 PM
  #10  
68noob's Avatar
68noob
Thread Starter
Cruising
 
Joined: Jul 2011
Posts: 10
Likes: 0
From: littleton colorado
Default

sorry, that link you gave me is probably the one i was thinking about. If you have not seen my last post, i am looking for input on what to prep frame and crossmember etc with
(rust converter / inhibitor / primer) prior to painting. Also, what do you think of the spray can undercoating. I used some lots-o-years ago on an austin healy i had and it seemed to work just fine.
thx jesse
Reply
Old Sep 12, 2011 | 10:09 PM
  #11  
Rally68's Avatar
Rally68
Burning Brakes
 
Joined: Sep 2008
Posts: 805
Likes: 5
From: Naperville Illinois
Default

I have had good results with a wire brush in a drill, followed by a wipe-down with lacquer thinner, then I use a product called One Step (this is a tannic acid- based rust converter) with a good topcoat. I recommend Eastwood Chassis Black (satin or gloss), and Seymour Cast Blast and Alumi-Blast as far as paint is concerned. Interstate products makes the One Step, and gallon is around $40 bucks. The great thing about that stuff is that you don't need to get all the rust off; in fact it works better on rusted surfaces.

Before


After
Reply

Get notified of new replies

To 68 rear suspension





All times are GMT -4. The time now is 04:58 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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