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

Need Rear end HELP

Thread Tools
 
Search this Thread
 
Old May 18, 2006 | 07:39 PM
  #1  
plumberh2o's Avatar
plumberh2o
Thread Starter
Pro
10 Year Member
 
Joined: Oct 2001
Posts: 725
Likes: 0
From: Berlin Maryland
Default Need Rear end HELP

As I said,
This is something I have never run in to. My new rear turned it self into a Detroit locker.
I know this is not sounding sane, let me start from the beginning.
I installed a new rebuilt Dana 44 in my 86 coupe I drove it about 200 miles and everything was fine. I got into some bad weather and had some fun spinning some wheels on the wet road and all of a sudden the posi will not let go. When I go around turns the one tire hooks and the other tire skips like a DETROIT LOCKER. Will this thing ever let go or am I going to mess things up by driving it this way.

Plumberh2o
Reply
Old May 18, 2006 | 08:02 PM
  #2  
parafrog's Avatar
parafrog
Racer
 
Joined: Jan 2005
Posts: 476
Likes: 0
From: Tucson, AZ. L98-85 AUTO COUPE: 120k MILES: daily driver. SOUND OFF IF YOU'VE BEEN THERE. Ex-Jumpin' Junky-82nd Airborne-2/505 PIR: 1st ID-1/16th Inf: Recon Marine Retread. GOD BLESS GRUNTS.
Default

well something ain't spinning. stuck clutches? shoot i don't know, but i do know you need to talk to whoever built it. building rear ends ain't easy. i did it one time with no dial indicators or shise to check backlash or install bearings, but i was good, resilient, lucky and just kept pulling stuff apart untill the pattern looked good. it sounds like your re-builder could be none of these. but be positive--everybody makes mistakes.

i hope you get a direction of inquiry here, but i don't think that will help your negotiations with the assembler. call them, start out polite, then get more aggresive. or even better, go there and do the same thing--if you are close enough.

did you add posi additive?

Last edited by parafrog; May 18, 2006 at 08:05 PM.
Reply
Old May 18, 2006 | 09:06 PM
  #3  
LS6 Motor's Avatar
LS6 Motor
Drifting
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Apr 2005
Posts: 1,283
Likes: 12
From: New York
Default

When you installed the rearend, did you put the lube in it, or was it full from the rebuilder? The reason why I ask is that there is an additive you must put in along with the gear oil. The additive is needed to make the clutches in the differental work correctly. Just a thought....
Reply
Old May 18, 2006 | 09:56 PM
  #4  
JackDidley's Avatar
JackDidley
Race Director
20 Year Member
Active Streak: 30 Days
Liked
Loved
 
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
Default

Originally Posted by KODAVETTE
When you installed the rearend, did you put the lube in it, or was it full from the rebuilder? The reason why I ask is that there is an additive you must put in along with the gear oil. The additive is needed to make the clutches in the differental work correctly. Just a thought....


The posi becomes locked when it gets hot. Happened to me on a C3 I used to have.
Reply
Old May 19, 2006 | 09:18 AM
  #5  
parafrog's Avatar
parafrog
Racer
 
Joined: Jan 2005
Posts: 476
Likes: 0
From: Tucson, AZ. L98-85 AUTO COUPE: 120k MILES: daily driver. SOUND OFF IF YOU'VE BEEN THERE. Ex-Jumpin' Junky-82nd Airborne-2/505 PIR: 1st ID-1/16th Inf: Recon Marine Retread. GOD BLESS GRUNTS.
Default

is there anybody out there?

not pink floyd. which one is pink?
Reply
Old May 19, 2006 | 06:43 PM
  #6  
plumberh2o's Avatar
plumberh2o
Thread Starter
Pro
10 Year Member
 
Joined: Oct 2001
Posts: 725
Likes: 0
From: Berlin Maryland
Default

I put the lube in the rear synthetic lube that needs no posi fluid. This rear was rebuilt by Ickers rear rebuilds and has a 1 year guarantee. If I feel it is not going to fix it self then I have a days work to remove it again and install another one when I get it from Ickers.

Thanks but the thing I asked was if anyone else seen this happen or had it happin to them and what was wrong.
Reply
Old May 20, 2006 | 06:37 AM
  #7  
CF6873's Avatar
CF6873
Melting Slicks
25 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Jul 2000
Posts: 2,107
Likes: 14
From: Lancaster PA
Default

I have read that 2 bottles of the GM only additive are nessessary in some rears. I would try that before pulling the rear.
Reply
Old May 20, 2006 | 06:59 AM
  #8  
geogolf's Avatar
geogolf
Drifting
 
Joined: Jun 2005
Posts: 1,426
Likes: 1
From: brookville pa.
Default rear end

i think before you give up I would buy a bottle of limited slip additive and put that in to see if its frees clutches up might work might not gear oil you put in might not had enought additive
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 May 20, 2006 | 12:07 PM
  #9  
redrose's Avatar
redrose
Melting Slicks
10 Year Member
 
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
Default

toss in two bottles of gm positration lube additive p/n 1052358.

stuff works...i've heard its whale oil,don't tell the tree-grabbers.
Reply
Old May 20, 2006 | 12:56 PM
  #10  
plumberh2o's Avatar
plumberh2o
Thread Starter
Pro
10 Year Member
 
Joined: Oct 2001
Posts: 725
Likes: 0
From: Berlin Maryland
Default

I a going to put two bottles of GM POSI FLUID in the rear and take it to the big parking lot the next time it is raining. Then I will see if the same treatment will make it better or do it in.
Reply

Get notified of new replies

To Need Rear end HELP





All times are GMT -4. The time now is 02:51 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