Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic
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> posi unit for 1971 Camaro
User Name
Password
lost password?   |   register now

Thread: posi unit for 1971 Camaro Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :

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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
09-12-2005 11:22 AM
Hippie
Quote:
Originally Posted by jimfulco
You need to find out if it's an 8.2" 10-bolt or an 8.5" 10-bolt. Once you do that, you need to use a carrier that is compatible with the gears you intend to use. Here's a site with some pictures of various GM rear ends:

http://www.oldsmobility.com/10bolt-tech.htm

The 8.5" with 3.73 gears should have a "3-series" carrier, used with 2.73-up (numerically higher) gear ratios. It should have "410408N" cast into it. It will NOT work in an 8.2" rear end. Any 8.5" gears that are less than 2.73 will use a "2-series" carrier, cast 410409N.
Odds are it's an 8.5, my '70 Camaro was an 8.2 and my '71 Z-28 was an 8.5. The axles from an 8.2 of the same length will work in an 8.5 and vice versa but the carriers (as stated above) will not.
09-11-2005 10:24 PM
jimfulco You need to find out if it's an 8.2" 10-bolt or an 8.5" 10-bolt. Once you do that, you need to use a carrier that is compatible with the gears you intend to use. Here's a site with some pictures of various GM rear ends:

http://www.oldsmobility.com/10bolt-tech.htm

The 8.5" with 3.73 gears should have a "3-series" carrier, used with 2.73-up (numerically higher) gear ratios. It should have "410408N" cast into it. It will NOT work in an 8.2" rear end. Any 8.5" gears that are less than 2.73 will use a "2-series" carrier, cast 410409N.
09-11-2005 12:18 PM
todel1223
posi unit for 1971 Camaro

Does it matter what ring and pinion is in the car to add a posi unit? Right now there is a 10 bolt. I am looking at a 8.5 GM 10 bolt posi unit 28 spline 8.5 positraction, that had 3.73 gears on it that are now removed. Will this work or what do I need to know?

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


All times are GMT -6. The time now is 03:36 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.