8.5 x 10 rear - mono to multi - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

 
LinkBack Thread Tools Display Modes
post #1 of 13 (permalink) Old Jul 24th, 10, 07:34 PM Thread Starter
Tech Team
Scott
 
Join Date: Mar 2007
Location: West Central MN
Posts: 50
8.5 x 10 rear - mono to multi

Hey all,
I've got a stock 10 bolt/mono coming out of my 68 and will be putting in a 8.5 10 bolt from a 74 nova. Since the pearches are set for the multi's, can I just bolt in multi's or do I have to get anything else. I've read where shocks etc don't quite jive. I'd eventually have the car set lower but can deal with it sitting normal for now...I don't want the back end jacked up.

Thanks a bunch in advance...I searched a little but didn't find my info when the different rear end was included.

68 396 (408), M21 4 spd, 8.5 10"

A man with a gun is a citizen - a man without a gun is a victim.

Roses are red violets are blue
I'm schizophrenic and so am I.
1968 Camaros is offline  
Sponsored Links
Advertisement
 
post #2 of 13 (permalink) Old Jul 24th, 10, 07:42 PM
Senior Tech
Scott
 
Join Date: Jun 2006
Location: Pensacola, FL
Posts: 579
Garage
Re: 8.5 x 10 rear - mono to multi

So do you still have the mono leafs in the car or do you have multi leafs in there now?

69 RS LS3/T56
68 Firebird vert LS1/4L60E
67 RS LS2/T56
Z06vette is offline  
post #3 of 13 (permalink) Old Jul 24th, 10, 07:55 PM
Senior Tech
 
Join Date: May 2004
Location: Southeast PA
Posts: 8,303
Re: 8.5 x 10 rear - mono to multi

You can basically do one of two things:

1. Install new multileafs but use the shock anchor plates and shocks from your monoleaf setup. You may find that you need to oval the holes the u-bolts/t-bolts go through (you probably have four t-bolts if your 8.2 is original, but it is best to install at least one u-bolt; the factory performance applications used a u-bolt on the outboard position and t-bolts on the inboard side, but a lot of us use two u-bolts instead for more strength), because the 8.5 holes may be spaced slightly differently. If you reuse the mono anchor plates and shocks, you may find that the shocks do not have enough travel with the new springs (the shocks may be close to full extension with the car just sitting on the springs). Some folks that reuse the mono parts have to add shock extenders (a specialized fastener that adds an inch or more to the top of the shock, fairly inexpensive, $10 or so).

2. Get multileaf anchor plates and multileaf shocks. This is the "right" way to do it, but costs more.

Eric
69 'vert project big block/TKO 600 RR
68 'vert driver RS clone -- gone!
Eric Kammerer is offline  
 
post #4 of 13 (permalink) Old Jul 25th, 10, 07:43 AM Thread Starter
Tech Team
Scott
 
Join Date: Mar 2007
Location: West Central MN
Posts: 50
Re: 8.5 x 10 rear - mono to multi

Quote:
Originally Posted by Z06vette View Post
So do you still have the mono leafs in the car or do you have multi leafs in there now?
Everything is tore apart right now so I can go any direction needed.

68 396 (408), M21 4 spd, 8.5 10"

A man with a gun is a citizen - a man without a gun is a victim.

Roses are red violets are blue
I'm schizophrenic and so am I.
1968 Camaros is offline  
post #5 of 13 (permalink) Old Jul 25th, 10, 07:44 AM Thread Starter
Tech Team
Scott
 
Join Date: Mar 2007
Location: West Central MN
Posts: 50
Re: 8.5 x 10 rear - mono to multi

Eric,
Thanks a million; I'll spend a little more to do it right then!

68 396 (408), M21 4 spd, 8.5 10"

A man with a gun is a citizen - a man without a gun is a victim.

Roses are red violets are blue
I'm schizophrenic and so am I.
1968 Camaros is offline  
post #6 of 13 (permalink) Old Jul 25th, 10, 07:56 AM
Senior Tech
Scott
 
Join Date: Jun 2006
Location: Pensacola, FL
Posts: 579
Garage
Re: 8.5 x 10 rear - mono to multi

Ya, I would get your lowering springs, now, if its in the budget. I have an 8.5 in my 67 with hotchkis springs. You will likely need to shorten the drive shaft about an inch or so, depending on which yoke is on the 8.5. I had to enlarge the U-bolt holes on the spring perches because, as mentioned above, they just a tad off from the shock plate holes. I used hotchkis springs & U-bolts. The hotchkis U bolts are much larger diameter then stock U/Tbolts. Scott

69 RS LS3/T56
68 Firebird vert LS1/4L60E
67 RS LS2/T56
Z06vette is offline  
post #7 of 13 (permalink) Old Jul 25th, 10, 09:01 AM
Senior Tech
Chris
 
Join Date: Oct 2006
Location: CT
Posts: 345
Re: 8.5 x 10 rear - mono to multi

Scott, I put a new multi-leaf rear in my 68 as well. I got new multi-leaf spring plates, but never put them on. I used traction bars that have shock mounts built in.
I had drilled the new plates out to accept 1/2" u-bolts.
If you decide to use new plates, let me know. You can have them.

68RS Project - taking much longer than expected
FFRiccio is offline  
post #8 of 13 (permalink) Old Jul 25th, 10, 11:09 PM
Senior Tech
Pete
 
Join Date: May 2009
Location: Hermosa Beach, CA
Posts: 314
Re: 8.5 x 10 rear - mono to multi

I went from mono to Hotchkis multi on my 68 Camaro but had to add lowering blocks too cause it was not low enough. So now i have a gap between the brackets that hold the leaf in. Its temporary tho as Ill have to upgrade the leafs to a DSE 3" drop once I have an engine that makes some power. Im also in the process of building an 8.5 so Im curious to see how it goes, post up some pics if you have time. : )

Pete
1968 Camaro
2009 Porsche 911 Carrera S

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Pete68 is offline  
post #9 of 13 (permalink) Old Jul 27th, 10, 05:21 PM Thread Starter
Tech Team
Scott
 
Join Date: Mar 2007
Location: West Central MN
Posts: 50
Re: 8.5 x 10 rear - mono to multi

Thanks for all the info guys. When things start happening again with it I'll post a few pics. In the process of switching to a different custom shop right now. I'll vent about that in another section of the forums. Thanks again, Scott

68 396 (408), M21 4 spd, 8.5 10"

A man with a gun is a citizen - a man without a gun is a victim.

Roses are red violets are blue
I'm schizophrenic and so am I.
1968 Camaros is offline  
post #10 of 13 (permalink) Old Aug 4th, 10, 10:04 PM
Gold Lifetime Member
Rob
 
Join Date: Dec 2001
Location: Henderson, Nevada USA
Posts: 23
Re: 8.5 x 10 rear - mono to multi

Quote:
Originally Posted by Z06vette View Post
Ya, I would get your lowering springs, now, if its in the budget. I have an 8.5 in my 67 with hotchkis springs. You will likely need to shorten the drive shaft about an inch or so, depending on which yoke is on the 8.5. I had to enlarge the U-bolt holes on the spring perches because, as mentioned above, they just a tad off from the shock plate holes. I used hotchkis springs & U-bolts. The hotchkis U bolts are much larger diameter then stock U/Tbolts. Scott
Hope you don't mind if I chime in with a question. I am in exactly (almost) the same place with a '74 Nova 8.5 multi I am putting in my 68 mono with the Hotchkis springs.

Scott, did you use the multileaf shock anchor plates or re-use mono plates?
If you used the multileaf, do you have a recommended source?
I hear some of the repop plates have the ears bent at the wrong angle...or something...
Again, sorry for crashing the thread but it hit home.
Rob
Robster is offline  
post #11 of 13 (permalink) Old Aug 4th, 10, 11:55 PM
Senior Tech
Al
 
Join Date: Nov 2002
Location: Vancouver, USA
Posts: 10,510
Re: 8.5 x 10 rear - mono to multi

DSE multi plates are killer quality, fit perfectly and the same price as the repros.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
BPOS is offline  
post #12 of 13 (permalink) Old Aug 5th, 10, 10:59 AM
Senior Tech
 
Join Date: Jan 2009
Location: DFW, Texas
Posts: 223
Re: 8.5 x 10 rear - mono to multi

Will regular shocks work with the DSE multi-plates on a mono to multi conversion or does it require special shocks of some sort?

67 Convertible, LS1, T56
rockportag03 is offline  
post #13 of 13 (permalink) Old Aug 5th, 10, 11:42 AM
Senior Tech
Scott
 
Join Date: Jun 2006
Location: Pensacola, FL
Posts: 579
Garage
Re: 8.5 x 10 rear - mono to multi

I reused the mono-leaf shock plates. I wasnt sure if I went to multi leaf plates, that I would be able to orient them to work with the non-staggered shock setup in my 67. I used the hotchkis leafs, and everything fit pretty well. I had mono springs in my car as well. I will post a pic this weekend if it will help. Other than having to shorten the drive shaft & enlarge the U-bolt holes, it was fairly straight forward. Scott

69 RS LS3/T56
68 Firebird vert LS1/4L60E
67 RS LS2/T56
Z06vette is offline  
Sponsored Links
Advertisement
 
Reply

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:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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