| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
11-05-2024, 09:21 PM
|
|||
|
|||
Correct 12 bolt rear for '67 GTO?
I plan to replace the factory 10 bolt in my'67 GTO with a 12 bolt. I'm getting conflicting opinions on which rear to use. Some say the '67 Chevelle rear is a bolt in, while others say the '67 GTO has a 'wide track' rear and should use the '68/'72 Chevelle 12 bolt. I know the '67 Chevelle rear is an inch or so shorter than the 68/72 rear. So which is correct for a '67 Goat?
|
|
#2
11-05-2024, 10:48 PM
|
||||
|
||||
|
I don't think GTO's used the 12 bolt until 1970?
The 64-67 will fit and so will the 68-72. You might have to use a different or conversion u joint. |
|
#3
11-05-2024, 10:52 PM
|
||||
|
||||
|
Quote:
He’s asking in a roundabout way which Chevelle 12-bolt would be the same width as a 1967 GTO 10-bolt. Definitely the later 68-72 12-bolt.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
|
#4
11-06-2024, 01:52 PM
|
||||
|
||||
|
What drum to drum width is considered correct for '67 Lemans/GTO?
__________________
I could explain all this to the girl at the parts store, but she'd probably call the asylum. White '67 LeMans 407/TH350/Ford 3.89... RIP Red '67 LeMans. 407/TH400/Ford 3.25 |
|
#5
11-06-2024, 01:52 PM
|
|||
|
|||
|
Quote:
|
|
#6
11-06-2024, 03:44 PM
|
||||
|
||||
|
65-67 Chevelle's are the same width.
https://chevellestuff.net/1965/rear_axle.htm
__________________
Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4-sold 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
|
#7
11-06-2024, 09:32 PM
|
|||
|
|||
|
I used one from a 67 Chevelle. Had to change the U joint but a pretty straight forward swap.
__________________
My money talks to me-it usually says goodbye! |
|
#8
11-07-2024, 12:08 AM
|
||||
|
||||
|
I can’t remember the exact numbers anymore, but I recall a number like 54-1/2” flange to flange for early and 55-3/8” or so for late. Believe the change was made for Pontiac for the ‘67 model year… have also talked to folks that had a late ‘66 with the wider housing too. Wider housing came on 68-72 Chevelles and 69-72 GP amongst others.
|
|
#9
11-07-2024, 12:21 AM
|
||||
|
||||
|
My first post was a bit of a fishing expedition to see if the answer changed. Years ago when I asked this question, I was told that '64-66 Pontiac rear ends were 60" drum to drum, and '67-72 pontiac rears were about 61" and change wide drum to drum.
The '64-67 Chevy rears were narrower and got wider in '68-72. So yes, the '68-72 Chevelle 12 bolts will be approx 61" wide. Not the path I've taken in this deal, but to each his own. https://forums.maxperformanceinc.com...d.php?t=416764
__________________
I could explain all this to the girl at the parts store, but she'd probably call the asylum. White '67 LeMans 407/TH350/Ford 3.89... RIP Red '67 LeMans. 407/TH400/Ford 3.25 |
|
#10
11-07-2024, 04:53 AM
|
||||
|
||||
|
I have found, narrow A-body housing is 1964-67 Chevy and 1964-65 Pontiac.
Wide A-body housing is 1968-72 Chevy, 1966-72 Pontiac, 1969-72 G-body. FWIW |
| The Following User Says Thank You to Kenth For This Useful Post: | ||
| Reply |
| Thread Tools | |
| Display Modes | |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
