Rear End - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 06-25-2012, 05:21 PM
Registered User
 
Last photo:
Join Date: Feb 2010
Posts: 105
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Rear End

My car original came with a 3.42 open rear end, the previous owner said he changed out the 3.42 differential and installed a '78 3.73 posi differential. The other day I had the car on jack stand and when I spin the driver rear tire the passenger rear tire spins in the opposite direction, I never had the cover off to look inside but I assume its all stock gm stuff, I was told that my clutches are worn out? I don't understand because, if I am at a dead stop I can squeal tires and if I manual shift it from 1st gear to 2nd I can chirp the tires

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 06-25-2012, 05:30 PM
Registered User
 
Last photo:
Join Date: Jul 2004
Location: At Speed
Age: 51
Posts: 1,396
Wiki Edits: 0

Thanks: 2
Thanked 41 Times in 39 Posts
COuld be a worn out clutch posi or a like new TruTrac.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 06-25-2012, 08:13 PM
S10 Racer's Avatar
http://www.warsprints.com
 

Last journal entry: W.A.R. (Wingless Auto Racing) Sprint Car Racing
Last photo:
Join Date: Nov 2007
Location: At The Dirt Tracks
Age: 55
Posts: 1,939
Wiki Edits: 0

Thanks: 4
Thanked 74 Times in 66 Posts
Things to try:
1. Try turning the driveshaft instead of the tire.
2. Put one tire back on the ground and try to turn the other.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 06-29-2012, 08:20 AM
big gear head's Avatar
High Performance Rear Ends
 
Last photo:
Join Date: Nov 2009
Location: Central City, KY
Posts: 2,160
Wiki Edits: 0

Thanks: 15
Thanked 522 Times in 439 Posts
'81 Z28? If it is then you have the 8.5 corporate rear end. That will have the Traction Lock differential. It's very comon for the clutches to wear and loose their preload, which will make it act like a standard differential when you try turning the wheels like that. The only way that you are going to know what you have is to remove the cover and look inside. There is no other way to be sure. There are after market reproduction clutches available for these now at about $200 a set with shims. They are no longer available from GM. You can also shim the clutches that are in it if they are not worn too much.
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
1953 Buick Special-front end rear end?? mbjeep Suspension - Brakes - Steering 8 12-06-2009 07:32 PM
stock 63 chevyII rear end vs. s-10 rear end david6chevy Transmission - Rearend 3 08-17-2009 05:36 AM
Gm 12 bolt truck rear end vs. car rear end '54 Pontiac Transmission - Rearend 6 02-05-2009 06:17 PM
4x4 12 bolt rear end same as 2wd rear end??? Ed ke6bnl Transmission - Rearend 2 05-24-2008 03:25 PM
Ford 9" rear end vs stock 89 chevy truck rear end jimmy p Transmission - Rearend 2 12-07-2005 04:28 AM


All times are GMT -6. The time now is 07:49 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.