Difference between 8.2 and 8.5 differential - Team Camaro Tech
Team Camaro Tech join team camaro
 
Camaro Parts at SS396.com     
GROUND UP & SS396.com         
Official Sponsor of Team Camaro
   

Auto Insurance



Registered users (free) do not see these large ads

Transmission & Driveline Transmissions and Differentials

Reply
 
Thread Tools Display Modes
  #1  
Old Oct 30th, 06, 12:48 PM
within1sreach within1sreach is offline
Tech Team

 
Join Date: May 2005
Posts: 35
Default Difference between 8.2 and 8.5 differential

How can I tell which is which,I've done a search and noting that says what to look for.Any help would be great.Thanks guys...
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old Oct 30th, 06, 01:18 PM
Lucky68's Avatar
Lucky68 Lucky68 is offline
Gold Lifetime Member

Mike
 
Join Date: Jul 2003
Location: Suncrest, WA
Posts: 405
Default Re: Difference between 8.2 and 8.5 differential

Check out the link below. There's a ton of differential information.
They're pretty easy to tell apart, the 8.5 rear has the square lugs that are visible on the bottom corners of the pumpkin where the 8.2 has none. The 8.2 would be a factory 1st Gen 10 bolt and the 8.5 would have most likely come from a Nova.


http://http://www.novaresource.org/axle.htm
__________________
1968 Camaro Coupe: Forged 383, AFR heads, Edelbrock Air-Gap intake, Holley 750 dp, Dynatech headers (557 HP/543 TQ), TKO-600, 12 Bolt 3.73, Vintage Air.
http://rides.webshots.com/album/250023748XWhfQW
Reply With Quote Quick reply to this message
  #3  
Old Oct 30th, 06, 03:13 PM
within1sreach within1sreach is offline
Tech Team

 
Join Date: May 2005
Posts: 35
Default Re: Difference between 8.2 and 8.5 differential

Thanks, that's just what I was looking for.
Reply With Quote Quick reply to this message
  #4  
Old Oct 30th, 06, 05:08 PM
1stgenCR 1stgenCR is online now
Senior Tech

 
Join Date: Apr 2006
Location: Huntington Beach, CA
Posts: 440
Default Re: Difference between 8.2 and 8.5 differential

Cool. Always assumed I had the 8.2" 10 bolt in my 68 Camaro but just checked using the identification info in the link and I have the 8.5"
__________________
68 Camaro - TCI subframe & 12 bolt torque arm, Ridetech triple adjustable shocks, 427" LS3, T56, Wilwood brakes

http://www.cardomain.com/ride/2334689/1
Reply With Quote Quick reply to this message
  #5  
Old Oct 31st, 06, 07:50 AM
elcamino72 elcamino72 is offline
Senior Tech

Bryan Shook
 
Join Date: Sep 1998
Location: Enola, Pennsylvania
Posts: 421
Default Re: Difference between 8.2 and 8.5 differential

8.5's from some Novas can be made to fit right under a 1st gen, that's most likely where yours came from ... the 8.5's are considered stronger than the 8.2's ... also there seem to be more gear choices availible for the 8.5 as they were install in vehicles up through 2000 or so.
__________________
Bryan Shook

Collector Car Lawyer
Reply With Quote Quick reply to this message
  #6  
Old Oct 31st, 06, 09:17 AM
Lucky68's Avatar
Lucky68 Lucky68 is offline
Gold Lifetime Member

Mike
 
Join Date: Jul 2003
Location: Suncrest, WA
Posts: 405
Default Re: Difference between 8.2 and 8.5 differential

72-75 Nova 8.5 rearends are direct bolt in for 67-89 Camaros. I've heard that the driveline may need to be shortened though.
__________________
1968 Camaro Coupe: Forged 383, AFR heads, Edelbrock Air-Gap intake, Holley 750 dp, Dynatech headers (557 HP/543 TQ), TKO-600, 12 Bolt 3.73, Vintage Air.
http://rides.webshots.com/album/250023748XWhfQW
Reply With Quote Quick reply to this message
  #7  
Old Oct 31st, 06, 09:28 AM
madmax87's Avatar
madmax87 madmax87 is offline
Gold Lifetime Member

 
Join Date: May 2001
Location: Arizona USA
Posts: 2,137
Default Re: Difference between 8.2 and 8.5 differential

Here's a pic of an 8.5, 3:73 posi under my 69 Camaro. Direct bolt in. Great diff and alot less than a 12 bolt.



Here's a pic of a 8.2. The diff cover is an easy way to tell the difference too.

__________________
Dennis
69 Z/28. 302DZ, Autogear M22, Red w/black stripes.
69 Camaro, ZZ4, 700R4, 8.5 3:42 posi, X11
87 IROC

Last edited by madmax87; Oct 31st, 06 at 09:40 AM.
Reply With Quote Quick reply to this message
  #8  
Old Nov 1st, 06, 02:10 PM
zzzzz zzzzz is offline
Tech Team

Jim Mitschke
 
Join Date: Apr 2004
Location: Richfield, Oh
Posts: 45
Default Re: Difference between 8.2 and 8.5 differential

Please do not go by diff covers ...Those are interchangable they will bolt on to either housing. The casting is the only true way to tell. Look at the first picture 7 and 5 o'clock bolts. See the 8.5 casting triangles...That is on all 8.5 rear even up till now 2000 etc. May look abit different but will all have extra casting flashing that hangs out like that. Also if you look at the casting collar where both axles are press into the center section will have (4) equally spaced bumps too All of them 1973 1980 GN 1996 Impala and all the 10 bolt 8.5 trucks will have these casting similiars. The Yokes will all have 4 bolts and 2 straps system to hold in the u-joint. If it has u bolt to hold the u -joint in it is NOT a 8.5 for sure. ope this extra info helps. Jim J D RACE.COM
__________________
J D RACE AND RESTORATION
GM Differential specialists
Richfield, Oh
www.JDRACE.com
Reply With Quote Quick reply to this message
  #9  
Old Nov 1st, 06, 02:20 PM
Z06vette Z06vette is offline
Senior Tech

Scott
 
Join Date: Jun 2006
Location: Pensacola, FL
Posts: 537
Default Re: Difference between 8.2 and 8.5 differential

zzzzz are the yokes interchangeable? I just got a rear end and found the driveshaft is now about 1/2" too long. I determined I got an 8.5 rear end by the yoke, and the triangles. What I thought was a good deal turns out to be a great deal. I can always have the driveshaft shortened but I was just curious. Scott
__________________
69 RS LS1/T56
68 Firebird vert LS1/4L60E
67 firebird next project
Reply With Quote Quick reply to this message
  #10  
Old Nov 1st, 06, 03:51 PM
DZ Fool DZ Fool is offline
Senior Tech

Danny
 
Join Date: Dec 2003
Location: Chicago
Posts: 650
Default Re: Difference between 8.2 and 8.5 differential

3"
__________________
69 Rally Sport-Z/28-Orange/Wht stripes-White vinyl-Ivory Houndstooth Interior Fold down seat Early 69 ( 11/12/68) 5494xx vin

67 RS Coming Soon
http://www.chitownracing.com/forums/...572a4a5071.jpg
http://www.myspace.com/danny_db
Reply With Quote Quick reply to this message
  #11  
Old Nov 1st, 06, 05:50 PM
big gear head big gear head is online now
Senior Tech

Freddie
 
Join Date: Feb 2000
Location: Central City, Ky.
Posts: 5,153
Default Re: Difference between 8.2 and 8.5 differential

The 8.2 yoke will not fit the 8.5. The 8.2 has a 25 spline pinion and the 8.5 has a 30 spline pinion. If you get a yoke from a '71 to '75 8.5 rear end it will have the 1310 u joint and your drive shaft should work without modifications.
Reply With Quote Quick reply to this message
  #12  
Old Nov 3rd, 06, 02:38 PM
JOE58 JOE58 is offline
Gold Lifetime Member

 
Join Date: Oct 1999
Location: RI
Posts: 2,802
Default Re: Difference between 8.2 and 8.5 differential

Here is a picture of a mult leaf 10 bolt from a 69 Camaro that I thought is a 8.5 but it has the u bolts to hold the u -joint. It has the larger size bolt heads to hold ring gear and looks like it has triangles. gear ratio is about 3.55
Is this a 8.5?
thanks

Last edited by JOE58; Jul 11th, 09 at 07:00 PM.
Reply With Quote Quick reply to this message
  #13  
Old Nov 3rd, 06, 05:26 PM
big gear head big gear head is online now
Senior Tech

Freddie
 
Join Date: Feb 2000
Location: Central City, Ky.
Posts: 5,153
Default Re: Difference between 8.2 and 8.5 differential

Can't tell from this angle. Can you post a picture from the other side? If it has 3/4 inch heads on the ring gear bolts and a 1 1/4 inch pinion nut then it should be the 8.5.
Reply With Quote Quick reply to this message
  #14  
Old Nov 4th, 06, 03:01 PM
JOE58 JOE58 is offline
Gold Lifetime Member

 
Join Date: Oct 1999
Location: RI
Posts: 2,802
Default Re: Difference between 8.2 and 8.5 differential

thanks for the reply big GH
here is another picture. I think its a 8.5 but it has the u bolt on u joint not the strap/bolts on u joint.

Last edited by JOE58; Jul 11th, 09 at 07:00 PM.
Reply With Quote Quick reply to this message
  #15  
Old Nov 4th, 06, 04:47 PM
big gear head big gear head is online now
Senior Tech

Freddie
 
Join Date: Feb 2000
Location: Central City, Ky.
Posts: 5,153
Default Re: Difference between 8.2 and 8.5 differential

That's a BOP 8.2 10 bolt. It has no c clips and is a little stronger than the Chevy 8.2, but it isn't an 8.5.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply
Team Camaro Tech > First Generation Camaro Info and Tech - 1967- 1969 "Where it all started" > Transmission & Driveline      Current Topic: Difference between 8.2 and 8.5 differential
Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Team Camaro Tech 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.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.

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.



Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Stock 69 10 bolt -8.2 or 8.5? jrager Transmission & Driveline 3 Apr 13th, 06 07:42 PM
10-Bolt 8.2 vs 8.5 RPOZ11 Transmission & Driveline 3 Jan 31st, 06 04:18 PM
Swap 8.2 to 8.5 turbosix Brakes, Suspension & Steering 5 Aug 16th, 05 06:13 AM
8.2 or 8.5? bgreen63366 Tag Team 2 May 25th, 05 05:50 AM
8.2 or 8.5? bgreen63366 Transmission & Driveline 2 May 23rd, 05 10:02 PM


All times are GMT -7. The time now is 11:20 AM.



Camaros.net - 2009 AutoForums.com