69 GTO 12-bolt driveshaft - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 12-09-2011, 09:37 AM Thread Starter
 
Join Date: Sep 2010
Posts: 37
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
69 GTO 12-bolt driveshaft

I have a '69 GTO with a Pontiac 400 TH-400 transmission and I have just recently purchased a 12-bolt rear end out of a '69 Cutlass. I am wondering if I need to get my driveshaft shortened of if I should just buy a new one?

'81 Regal, Daily Driver.
'69 GTO, Lifelong Project.
'91 S-10, Auto-X Project?
liljohn442 is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 12-09-2011, 03:49 PM
Super Moderator
 
BearGFR's Avatar
 
Join Date: Aug 2008
Location: Springtown, TX
Posts: 5,742
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Garage
You could always just try it and see if it fits. It might be close. Make sure the yoke on the 12 bolt is the same size/shape in all respects as the original. Also... you said "12 bolt out of a 69 Cutlass".

Hate to be the one to break it to you but there's a good chance that's not a 'real' 12-bolt. The number of bolts on the rear cover mean nothing --- what counts is the number of bolts inside securing the ring gear to the carrier. There were some GM 10-bolt rears made in that time frame (usually found on Oldsmobile and Buick) that had 12-bolt rear covers on them. I've got one in my spare parts pile, or did at one time.

You should be able to research it on the net, or pull the cover and count ring gear bolts.

Bear

BearGFR
Springtown, TEXAS
BearGFR is offline  
post #3 of 3 (permalink) Old 12-12-2011, 07:31 PM
Former Super Moderator
 
Rukee's Avatar
 
Join Date: Feb 2007
Location: South Central Wisconsin
Posts: 9,919
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
You might be able to get by with just a conversion u-joint.
And if you pull the cover, set the axle tubes on some jack stands with the yoke facing down and then when you pull the cover you won't lose the fluid.
Rukee is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Undercarriage, Frame, Transmission and Differential Discussions.

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac GTO Forum forums, you must first register.
Please enter your desired user 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:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Driveshaft 04 GTO wildchild405 Drive train, suspension, alignment and brakes. 0 10-10-2011 05:03 PM
Is the 10 Bolt 8.2 BOP Carrier the same as Chevy 10 Bolt? mighty454 1964-1974 Tempest, Lemans & GTO Undercarriage, Frame, Transmission and Differential Discussions. 6 04-21-2010 04:30 PM
10 Bolt Versus 12 Bolt Rear Axle take5 1964-1974 Tempest, Lemans & GTO Exhaust, Suspension, Alignment, Fuel Tank and Brakes. 10 09-28-2009 04:45 PM
Driveshaft GTODAVE05 2004-2006 GTO General Discussion 9 06-06-2005 09:44 AM

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

 
For the best viewing experience please update your browser to Google Chrome