Is their a big difference between single and multi leaf springs? - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 25 (permalink) Old Jun 21st, 08, 03:42 PM Thread Starter
Senior Tech
Steven
 
Join Date: May 2007
Location: Jersey Shore
Posts: 661
Is their a big difference between single and multi leaf springs?

I just took out my leaf springs. To my surprise, one leaf spring was broken in the front spring mount.

Now I have to buy new leaf springs. My question is what do I do? Buy new mono's or go multi?

I have a 3:08 8.2 10 bolt posi with a M20 4 speed and a 327 pushing probably about 350 hp.

I have all the parts for the mono springs. I'd assume that I would need all new mounting parts and new shocksd should I change to multi's.

Is it worth the money and effort to convert to multi's? Or should I just stay with the mono's?

Any advice would be appreciated.

Thanks

1968 Rally Sport
Corvette Bronze, 327, M-20 4 Spd
PW, PB, AC, Deluxe Int, Vigilite
Norcoastal is offline  
Sponsored Links
Advertisement
 
post #2 of 25 (permalink) Old Jun 21st, 08, 04:00 PM
Senior Tech
Hank
 
Join Date: Mar 2007
Location: california
Posts: 672
Re: Is their a big difference between single and multi leaf springs?

There are always fiberglass springs.
http://www.flex-a-form.com/products.asp & others

I do not like to add weight to my car,multi leafs are a lot heavyier than mono leafs.
I took off 70 LBS (IIRC) switching from multileafs to fiberglass monos.

MBHD

Chevy 250 turbo EFI

Last edited by mean buzzen half dozen; Jun 21st, 08 at 04:50 PM.
mean buzzen half dozen is offline  
post #3 of 25 (permalink) Old Jun 21st, 08, 04:48 PM
Senior Tech
 
Join Date: Jul 2005
Location: California
Posts: 2,353
Re: Is their a big difference between single and multi leaf springs?

You could switch to 3 leaf springs. They will work with your current mono shock, fit in the perch and everything.

If you were to switch to factory style multi leafs (4 or 5 leaf) the say you would either need new shocks or shock extenders to use with your current shocks. With any springs you will need new bushings and spring pads or isolators whatever you want to call them.
400bird is offline  
 
post #4 of 25 (permalink) Old Jun 21st, 08, 04:55 PM Thread Starter
Senior Tech
Steven
 
Join Date: May 2007
Location: Jersey Shore
Posts: 661
Re: Is their a big difference between single and multi leaf springs?

Where can you get 3 leaf springs?

Are you sure all the mounts and brackets will fit?

1968 Rally Sport
Corvette Bronze, 327, M-20 4 Spd
PW, PB, AC, Deluxe Int, Vigilite
Norcoastal is offline  
post #5 of 25 (permalink) Old Jun 21st, 08, 05:50 PM
Senior Tech
Dan
 
Join Date: Feb 2007
Location: Summerfield, NC
Posts: 547
Re: Is their a big difference between single and multi leaf springs?

There's a sticky in the suspension section with details on a 3 leaf sold by JCWhitney.

Dan

1968 RS - Black
408 w/ Muncie 4 speed & 12 bolt rear
Deluxe Houndstooth Interior
Dropped 2" with TeamIII Mini-Lites

Click for Picture:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
funbnme is offline  
post #6 of 25 (permalink) Old Jun 21st, 08, 06:02 PM Thread Starter
Senior Tech
Steven
 
Join Date: May 2007
Location: Jersey Shore
Posts: 661
Re: Is their a big difference between single and multi leaf springs?

Yeah, I read that. Someone posted this link http://1967-81camarocarparts.com/cat...suspension.pdf
who sells a 3 leaf replacement for a mono.

Does anyone have any experience with them?

The prices seem reasonable.

1968 Rally Sport
Corvette Bronze, 327, M-20 4 Spd
PW, PB, AC, Deluxe Int, Vigilite
Norcoastal is offline  
post #7 of 25 (permalink) Old Jun 21st, 08, 07:01 PM
Senior Tech
Ted
 
Join Date: Dec 2005
Location: Cedar Rapids, IA
Posts: 1,810
Re: Is their a big difference between single and multi leaf springs?

Quote:
Originally Posted by Norcoastal View Post
Where can you get 3 leaf springs?

Are you sure all the mounts and brackets will fit?
I got mine from JCW. But I hear they are having a hard time with orders. But I think there are other places. Everything that you have mono will work with the 3 leafs. I orginally did this swap. Then I changed to a 12 bolt rear end. I am still using the 3 leafs, but needed to change a few other items. If you are in need of some monos I still have the orginals that I took off. But they would have to be resprung. PM me if you want to go that way.
tgifford5 is offline  
post #8 of 25 (permalink) Old Jun 21st, 08, 10:01 PM
 
Join Date: Mar 2004
Location: Spokane, Washington
Posts: 5
Re: Is their a big difference between single and multi leaf springs?

I have new 5 leafs in a 1967 and the rear end sits very high. I just installed 3 leafs (from JCWhitney) in my 1969 big block, and IMO has a perfect stance with 1" lowering Hotchkis coils in the front.
ameritire is offline  
post #9 of 25 (permalink) Old Jun 22nd, 08, 05:00 AM
Senior Tech
Ted
 
Join Date: Dec 2005
Location: Cedar Rapids, IA
Posts: 1,810
Re: Is their a big difference between single and multi leaf springs?

Quote:
Originally Posted by ameritire View Post
I have new 5 leafs in a 1967 and the rear end sits very high. I just installed 3 leafs (from JCWhitney) in my 1969 big block, and IMO has a perfect stance with 1" lowering Hotchkis coils in the front.
I agree with you. I think the 3 leafs and a 1" lowering front spring gives a perfect stance. But I used the Eibach springs instead. This is on my 69 with a SB.
tgifford5 is offline  
post #10 of 25 (permalink) Old Jun 22nd, 08, 06:36 AM Thread Starter
Senior Tech
Steven
 
Join Date: May 2007
Location: Jersey Shore
Posts: 661
Re: Is their a big difference between single and multi leaf springs?

I was checking prices from JCW and Classic Muscle and the Classic muscle (a Chevy Dealer) has 3 spring GM direct mono replacements for $119 for the pair...and they're GM!

I purchased those.

Thanks for all the advice.

1968 Rally Sport
Corvette Bronze, 327, M-20 4 Spd
PW, PB, AC, Deluxe Int, Vigilite
Norcoastal is offline  
post #11 of 25 (permalink) Old Jun 22nd, 08, 08:45 AM
Banned
 
Join Date: Apr 2000
Location: Columbia, MO USA
Posts: 21,341
Re: Is their a big difference between single and multi leaf springs?

I don't think GM ever made 3-leaf mono replacements but hope you are right nowadays!!

As for buying new mono's!

Nobody re-pop's mono's b/c they are double tapered!

A stock mono is 2.75" wide on each end and thin and 2.25" in the middle and thick and they have a bottom locating "tit" on them!

Leaf springs are 2.5" wide and the same thickness pretty-much along their length and have a bolt through them that locate's them both top and bottom.

The 3-leaf mono replacement springs are the same width as the mono's so fit fine except we have to trim the lips off the sides of the center pads. They have a countersunk headed 5/16" bolt so are smooth on top and locate w/ the bottom nut.

Here is the info that I've saved on this that's probably also in the sticky!

"Here's the information on these springs. They are made by S&G Enterprises, Inc. Their website is S&G Enterprises and the part # is 21-245. They are made in Mexico. This same part shows up on this website Triangle Spring as factory replacement springs. They don't list the details such as spring rate on either site though.
My JCW cat. is number 671J-02 and the spring number is 94UA2669X at $62.95 each.

If this cross references to one of the numbers you listed which should be the second one down.
More info on the JCW springs. According to the sticker on the springs I installed from Vette Brakes the JCW/Triangle and VB springs both have the same PN (21-245).

I am going to assume they are the same spring given the PN and the fact my VB springs were labeled "Triangle". This would make the JCW springs #130.

The curious thing is after the install my rear end is about an inch higher with the VB springs than other who have used the JCW springs. (Yes, everything was tightened after it was on the ground)
https://www.camaros.net/forums/showthread.php?t=27619
Here is the thread with the info on my VB springs.
https://www.camaros.net/cgi-bin/forum...2.html?#000000
Just trying to keep all the pertinent info in one thread.
St. Louis Spring = 1-314-533-2132, Mon-Fri 7:30-4:30. Per Mike P.
www.johnrspring.com phone # 1800-521-0563 hope that helps let me know."


And I have JCW's 3-leaf mono replacements under my car except that I added the second and third leaf's to each side from my old '68 'Bird's broken multi's to better balance out my now about 525 pound front coil springs! She set's way high, just about right for a pair of L-60/14's in back. (Mine measure a modern 298/53-14!!)..

pdq67

PS., I used a 5/16" x so long carriage bolt by grinding the square off that's under the head to put my combination together. Just rethread it is all...

I just whacked h-ll outta the top heads using my 3 pound Ford Tool after tightening them together and went!! Work's fine!



pdq67 is offline  
post #12 of 25 (permalink) Old Jun 22nd, 08, 11:52 AM Thread Starter
Senior Tech
Steven
 
Join Date: May 2007
Location: Jersey Shore
Posts: 661
Re: Is their a big difference between single and multi leaf springs?

I have a new question for everyone.

I removed my old leaf springs, the problem I have is with the front spring pocket.

I can't get the bolt out to remove it from the leaf spring.

I've cut the nut off with a cut-off wheel, I've WD-40'd the whole thing, I've turned the bolt with a breaker bar and I've tried to beat it out with a hammer and a air chisel.

Nothing seems to get the bolt out.

I feel like it may be easier just buying a new spring pocket.

Any suggestions???

1968 Rally Sport
Corvette Bronze, 327, M-20 4 Spd
PW, PB, AC, Deluxe Int, Vigilite
Norcoastal is offline  
post #13 of 25 (permalink) Old Jun 22nd, 08, 08:38 PM
Senior Tech
Ted
 
Join Date: Dec 2005
Location: Cedar Rapids, IA
Posts: 1,810
Re: Is their a big difference between single and multi leaf springs?

Quote:
Originally Posted by Norcoastal View Post
I have a new question for everyone.

I removed my old leaf springs, the problem I have is with the front spring pocket.

I can't get the bolt out to remove it from the leaf spring.

I've cut the nut off with a cut-off wheel, I've WD-40'd the whole thing, I've turned the bolt with a breaker bar and I've tried to beat it out with a hammer and a air chisel.

Nothing seems to get the bolt out.

I feel like it may be easier just buying a new spring pocket.

Any suggestions???
Keep soaking it, but with PBBlaster. It does a better job on rusty parts. Or if you can get your hands on a can of Kroil. Usually the problem regarding the spring pockets are the 3 jnuts that break their weld and spin while trying to get them out. If you haven't done that yet and they are the orginal jnuts. Replace them. You can get them at your local Ace hardware store. Get the ones with the CIP stamping on them. Big sticky on this issue.
tgifford5 is offline  
post #14 of 25 (permalink) Old Jun 23rd, 08, 09:02 AM
Senior Tech
Brad
 
Join Date: Nov 2003
Location: El Dorado Hills, CA
Posts: 305
Re: Is their a big difference between single and multi leaf springs?

That's what happened to me, I broke some of them while trying to get them out. So I just replaced them all....

Founder MuscleSyndicate.com
Muscle Car Car Club
68 Camaro 468 - F1R Procharger - Converting to Procharged LS - in process now selling 468 BBC
whytry is offline  
post #15 of 25 (permalink) Old Jun 23rd, 08, 04:03 PM
Banned
 
Join Date: Apr 2000
Location: Columbia, MO USA
Posts: 21,341
Re: Is their a big difference between single and multi leaf springs?

I don't think you can take the front bolts out w/o removing the mounts!!

And then the darned clip-nuts tend to break!!

Which means I had to get my $10, HFT, el-cheapo, 4.5" angle grinder out to cut the heads off and remove them!!

What a pain, but it works great!! Just WORK SAFE HERE is all b/c if your car comes down on you, it CAN KILL YOU!!

pdq67



pdq67 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