Gears & Axles Driveshafts | Rearends | Differentials | Gears | 12 Bolt | 9 Inch | Dana

axle swap help

Thread Tools
 
Search this Thread
 
Old Jan 6, 2012 | 12:38 PM
  #1  
lemkerailroad's Avatar
Thread Starter
On The Tree
 
Joined: Sep 2011
Posts: 131
Likes: 0
From: dayton ohio
Default axle swap help

i am going to be doing a rear end swap in a 81 regal that i just bought

the car originaly had a v6 and is going to have a lsx engine installed shortly

now that you know that it was a v6 with a stock rear end, can a f body with rear disc be swaped out in its place

if so what other items am i going to have to swap out as well

has anyone done one of these swaps and if so can you post some pics please or info so i can get the ball rolling

thanks in advance

dave
Reply
Old Jan 6, 2012 | 03:19 PM
  #2  
FirstYrLS1Z's Avatar
TECH Veteran
20 Year Member
Photogenic
Photoriffic
Active Streak: 30 Days
iTrader: (4)
 
Joined: Aug 2004
Posts: 4,218
Likes: 147
From: Euclid,Ohio
Default

Since a 81 regal had a 7.5 rear with 26 spline axles,you really wouldn't be upgrading by using an f-body 7.625 rear with 28 spline axles. The gearset is only 1/8 " bigger and the axles are slightly bigger. The carrier internals are identical. If these 10 bolts break in Camaro/Firebirds,it'll also break in a LS powered 81 regal. Plus shocks mounting,control arm mounting and u-joint adaption would need extension design/fabrication.
Your best bet for a bolt-in/near bolt-in beefier rear would be from a 84-87 grand national,they are regals. they used 8.5 rears with 30 spline axles. They are only 1 size under the 12 bolt 8.8 GM rearend that are swapped in to f-bods as an upgrade.
Reply
Old Jan 6, 2012 | 03:56 PM
  #3  
lemkerailroad's Avatar
Thread Starter
On The Tree
 
Joined: Sep 2011
Posts: 131
Likes: 0
From: dayton ohio
Default

i understand about the size of the carrier but was curious if a assembly like a 10 or 12 bolt from a f body was a direct bolt in being they hang from the same style mounting points

where is a good place to find a GN rear assembly

i want to convert the rear to disc for better response to stopping
Reply




All times are GMT -5. The time now is 07:00 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE