CRG Discussion Forum
Welcome, Guest. Please login or register.
Did you miss your activation email?
July 28, 2014, 11:25:07 AM

Login with username, password and session length
Search:     Advanced search
Welcome to the CRG Discussion Forum!
Forum registration problems: Make sure you enter your email correctly and you check your spam box first. *Then* email KurtS2@gmail for help.
102437 Posts in 12088 Topics by 4667 Members
Latest Member: hrascoll
* Home Help Search Login Register
+  CRG Discussion Forum
|-+  Camaro Research Group Discussion
| |-+  Mild Modifications
| | |-+  rear end upgrade 1969
« previous next »
Pages: [1] Print
Author Topic: rear end upgrade 1969  (Read 2954 times)
KERR
Member
***
Posts: 74


View Profile Email
« on: January 03, 2014, 02:45:39 PM »

Hello guys,

I want / need to upgrade my rear end.  Its currently a 10 bolt and some one down the line has swapped some of the suspension.   Im not sure where to even start unless i just take everything off and start with nothing. 

Ill get some photos so you can see what im attempting to type out lol.. 

I have the rear axle,  it has one leaf attached to it on each side. 
then it has big traction bars.  the traction bar on the passanger side is bent inward.  Im not sure if it can be made straight again or not.   
At any rate the traction bar is bent, so when it rotates upward to hit the leaf spring it missing it, which causes the car not to go straight even thought at its current state it doesnt have enough power to be a big problem lol.   

It also has air shocks, and sets of sub frame connectors. 

What i would like to do is swap to a stronger rear end that live with a bunch of abuse.   Ive looked on e bay and other web pages but they all offer differnt lengths,  some say they are out of other cars and can be interchanged and some cant.   
then in the local paper there is a ad for a few 12 bolt rear ends out of different letter body cars.  So which letter cars work on the camaro?   
Logged
ko-lek-tor
Member
***
Posts: 494



View Profile
« Reply #1 on: January 03, 2014, 03:11:49 PM »

The only 12 bolt that is a bolt in fit are the housings made for 1967-9 Camaros and 1968-71 Novas. You need to research on your own this topic on this site and there is plenty to read because having told you which housings fit, those housings, at least most, will have multi leaf perches so you would need different perches or adapters or different springs. Having said that, I only would pursue that type rear if I was a purist for original equipment(which I am). A 9 inch ford and Dana 60 have always been regarded as stronger units and preferable. If 12 bolt is your pick, then I feel a cheaper route would be to get an 67-72 A body (Chevelle,Cutlass,LeMans,GS Buick) coil spring which are much more plentiful thus cheaper and weld the leaf perches on. They are a little wider, but wheels are available with many offsets nowadays. I would keep the mono (single) leaf springs as most serious drag only cars ran these. Good Luck...Oh, and the traction bar? If it is metal, it can be straightened,and I will add-cut,drilled,welded,altered and re-fabricated. Would like to have a pic first to see for myself how to proceed, but guessing an arbor press and a rosebud torch will take care of this. Air shocks...scrap 'em. Those A body rears came in a lot of 6 cylinder cars believe it or not. I got one out of a Canadian 69 Buick Special 2-door post I scrapped if you can't find one.
Logged

Putting you First...Keeps me First. Talent on loan from God. Helping the hobbyist and exposing the fraud
1969 SS/RS 396 coupe Hugger Orange X22 712 bought in 79
1969 SS 350 coupe LeMans Blue 713 bought in 79
1969 307 4spd. coupe Daytona Yellow 711 bought in 85
hotrod68
Hero Member
*****
Posts: 517


almost finished

rusticman48@aol
View Profile Email
« Reply #2 on: January 05, 2014, 12:15:55 AM »

  Moser sells a brand-new 12-bolt that is a drop-in. You can order it with any spring perches you want, almost any gear ratio and with C-clip eliminators. They're stronger than the original 12-bolts and come with positraction. Downside is they're rather pricey. As for traction bars, Competition Engineering sells an excellent set with J-bolts and the snubber contacts the front spring eye. They eliminate any wheel hop and actually help plant the rear tires on launch. Rick's Camaros sells rebuilt original 12-bolts, too. Hope this helps and good luck!
Logged

HotRod'68  1968 SS350 coupe undergoing frame-off resto/rod. 386/350/4.11s
Butternut Yellow    black standard interior
KERR
Member
***
Posts: 74


View Profile Email
« Reply #3 on: January 06, 2014, 01:57:19 PM »

Thanks guys,

Ive been looking on line at all the different option.   I think from a time stand point and not much more money just ordering one from a online place is the way to go.. 
Logged
zman1969
Member
***
Posts: 106



View Profile Email
« Reply #4 on: March 11, 2014, 04:33:23 PM »

I wouldnt bother with 12 bolt(unless your restoring it to be original) the 72-79 Nova 8.5 10 bolts or big 10 are near as strong as 12 bolt and alot easier to find and alot cheaper
Logged

Rich

69 RS/Z DZ302 Daytona bumble bee
69 T/A clone LS6/6sp
69 Nova SS 396
BULLITT65
Hero Member
*****
Posts: 1389


BULLITT65
View Profile Email
« Reply #5 on: March 11, 2014, 05:29:07 PM »

 
I wouldnt bother with 12 bolt(unless your restoring it to be original) the 72-79 Nova 8.5 10 bolts or big 10 are near as strong as 12 bolt and alot easier to find and alot cheaper

That would be my question as well: What are your intentions for the car? How about just re-doing the suspension so it works correctly?
Logged

1969 garnet red Z/28 46k mile unrestored X77
Looking for 3192477 (front) spiral shocks 3192851 (rear) please
Looking for an original LOF soft ray windshield
Looking for original Delco side post negative battery cable part # 6297651AV
Stingr69
Member
***
Posts: 394


View Profile Email
« Reply #6 on: April 07, 2014, 03:40:35 PM »

I would beef up the 10-bolt and beat the crap out of it before I would try to put a 12 bolt or something else in there.   Save the money and headaches and just fix what you have now.  JMO

-Mark.
Logged
bcmiller
CRG Member
*****
Posts: 323


View Profile
« Reply #7 on: April 10, 2014, 04:33:47 AM »

Let's see some pics of what you have first.

I would lead you away from a 12 bolt from an A body car.  The Chevelles had the Chevy type 12 bolt but most of the Buick, Olds, Pontiac "sister" cars to the Chevelle like the GTO got the BOP 12 bolt - and that is not what you want.  They also had the "ears" on the top of the center section.  Not ideal for a 69 Camaro since these are not leaf spring cars.

The 8.5 inch 10 bolt Corporate rear from the 72-75 Novas (and I believe the V8 76-79 Novas) or the other "sister" cars to the Nova (Pontiac Ventura, Olds Omega, Buick Apollo) would be a good choice.  This is a direct bolt in, as mentioned earlier.  Just make sure it is the 8.5 and not the 7.5 rear.

This is interesting reading and for the most part pretty accurate.  http://www.chevyhiperformance.com/techarticles/48518_posi_10_bolt_upgrade_install/
But NO NOT use the ratchet type posi from a pickup - it will break.

But again - let's see what you have first. If you are not putting down a lot of power, an 8.2 rear may be fine for your needs.
Logged

1968 Camaro SS 396 - now 468 BBC, M21, 12 bolt.
Bryon
hotrod68
Hero Member
*****
Posts: 517


almost finished

rusticman48@aol
View Profile Email
« Reply #8 on: April 11, 2014, 02:33:56 AM »

  If you can find one, a '69 Firebird 8.2 is stronger than the Camaro 8.2. It's a bolt-in except for a bastard U-joint you can get at any auto parts store. I ran one of these in my '68 years ago and it lived with a healthy 406. Just a thought and good luck.
Logged

HotRod'68  1968 SS350 coupe undergoing frame-off resto/rod. 386/350/4.11s
Butternut Yellow    black standard interior
tom
Hero Member
*****
Posts: 1133


View Profile WWW Email
« Reply #9 on: April 12, 2014, 11:50:29 AM »

How would I identify the 8.5 10 bolt at say a swap meet? Are they also stamped on the axle (like the 69's) with ratio & posi codes ?
Logged

69 X11 Z21 L14 glide
looking for a 69 export model (KPH) speedo
bcmiller
CRG Member
*****
Posts: 323


View Profile
« Reply #10 on: April 17, 2014, 11:33:03 AM »

Tom

See this link.

http://www.stevesnovasite.com/forums/showthread.php?t=36301
Logged

1968 Camaro SS 396 - now 468 BBC, M21, 12 bolt.
Bryon
tom
Hero Member
*****
Posts: 1133


View Profile WWW Email
« Reply #11 on: April 21, 2014, 12:42:15 AM »

Thanks!
Logged

69 X11 Z21 L14 glide
looking for a 69 export model (KPH) speedo
Pages: [1] Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.085 seconds with 18 queries.