If you've got tired old mono leaf springs, don't wait any longer. Spend $200 and put on a new set of springs.

I just replaced my monos with the JC Whitney 3 leaf spring and poly bushings. I can't believe the difference it made, both in ride and stance. :hurray: Why didn't I do this sooner?

Which one of these did you order?

http://www.jcwhitney.com/autoparts/Product/tf-VehicleBrowse/s-10101/Pr-p_Product.CATENTRY_ID:2005965/p-2005965/N-111+1968+200728444+600003409/c-10101

None of those. It's not listed for Camaro, but for Novas. If you search this site you'll see this is the spring a lot of people use for mono replacement. No alteration needed to the perch. Here it is:
http://www.jcwhitney.com/autoparts/ItemBrowse/c-10101/s-10101/p-100000263464/mediaCode-ZX/appId-10255809/Pr-p_CATENTRY_ID:10000026346410255809

Dave, the part number that you want is ZX942669X. It is listed under 1970 Nova. I did this same replacement last year. And just as DaveV stated what a difference in stance and ride. I am completely happy with mine also. The 3 leafs are not listed under Camaros. But you can do a search on JCW 3 leafs and find a lot of info on replacement.

Did you do the swap yourself or did a shop do it? Have not fooled leaf springs before. What is the part number for the bushings you used?

Too bad you didn't post last week...free shipping ended on the 29th.

Did you do the swap yourself or did a shop do it? Have not fooled leaf springs before. What is the part number for the bushings you used?

It's not too difficult. Do a search on the forum for mono multi swap and you'll find lot's of good information. I needed to drop my gas tank to replace the sending unit. It may be more difficult with the tank in. I used poly bushings, prothane bushings and energy suspension pads, just because that's what would ship the quickest. Here are the summit part numbers:

ENS-3-6113G SPRING PAD BLACK $19.88
PTP-7-1052-BL SPRING EYE SHACKLE MONO LEAF $69.95

I replaced the t-bolts with u-bolts that I picked up at St. Louis Spring.

If you've got tired old mono leaf springs, don't wait any longer. Spend $200 and put on a new set of springs.

I just replaced my monos with the JC Whitney 3 leaf spring and poly bushings. I can't believe the difference it made, both in ride and stance. :hurray: Why didn't I do this sooner?

You say it changed the stance, how high did it raise it?

Jim

Did you do the swap yourself or did a shop do it? Have not fooled leaf springs before. What is the part number for the bushings you used?

Yes I did the swap myself. I obtained all the info I needed on the swap off of the forums. I used Prothane poly bushings for a mono leaf set up. The pads need the lip to be trimmed off. I just used my bench grinder and zipped them right off.

You say it changed the stance, how high did it raise it?

Jim

I can't tell you the exact measurements that it raised it. But my rear was sagging from the old monos. I also changed my front springs to Eibach 1" lowering springs. It has a little bit of rake to it. Ever so slightly, but it just looks better than before.

You say it changed the stance, how high did it raise it?

Jim

Jim,

About 1/2 inch. I'm at 15 1/2 from center of axle to fender lip (no wheel well molding).

Too bad you didn't post last week...free shipping ended on the 29th.

Free shipping today on orders $75 or more at JCW.

I just made this thread a sticky and added some info to the Title to make it more clear.
Please post any other links to good threads here.
David

Just finished installing the 3-leaf JCW 21-245 springs in my 68 with 8.5 nova rearend. Some things that I did for installation: replaced flat head beveled centering bolt with a centering leafspring bolt with a 5/16" head that fit perfectly into the upper pad. Added a 5/16" plate(cut piece of another leafspring) and lower pad. Also I used the multileaf shock plate. Just install loose and tighten up when weight is on axle. Looks like my car sits up close to 2 inches. I like the stance.

Just finished installing the 3-leaf JCW 21-245 springs in my 68 with 8.5 nova rearend. Some things that I did for installation: replaced flat head beveled centering bolt with a centering leafspring bolt with a 5/16" head that fit perfectly into the upper pad. Added a 5/16" plate(cut piece of another leafspring) and lower pad. Also I used the multileaf shock plate. Just install loose and tighten up when weight is on axle. Looks like my car sits up close to 2 inches. I like the stance.

Just wondering why you used the multileaf shock plate? I did the same leaf replacement on my 69 but used my original mono leaf shock plate. Was yours an original multi leaf car?

No, I had an 8.2 3.08 monoleaf peg leg replaced with the budget 8.5 nova 10 bolt with 3.42 posi . Multileaf shock plate goes with multi leaf spring perch also is much stronger than mono leaf plate.

No, I had an 8.2 3.08 monoleaf peg leg replaced with the budget 8.5 nova 10 bolt with 3.42 posi . Multileaf shock plate goes with multi leaf spring perch also is much stronger than mono leaf plate.

Right. The Nova 8.5" has multi leaf perches on it, setup is a lil different than 3 leafs into mono perches, more space to fill since the perches are deeper.

I don't know if a multi shock plate will work with a mono perch? I had considered trying that because there seems to be a better selection of shocks to fit a multi leaf car.

You guys know how I've been mouthing about these for years as being good value.

David, glad to see a sticky made.

More info I've saved over time on this..

"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 labled "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)
http://www.camaros.net/forums/showthread.php?t=27619
Here is the thread with the info on my VB springs.
http://www.camaros.net/cgi-bin/forum...2.html?#000000
Just trying to keep all the pertinant 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."


pdq67

I ordered the JCW springs and the OEM mounting kit from Ricks. Wow what a difference in travel and stance. I only wish I had measured the before and after height. I never realized how mush those mono's sagged. Well worth the total of $234 I spent on parts.

Item: 942669 LEAF SPRING CHEVY, PONTIAC REAR
Subtotal: $111.98 USD
Shipping: $19.99 USD
Tax: $0.00 USD
Total: $131.97 USD

Qty Part No. Desrciption Options Price Price
1 SS-98 Camaro Mono Leaf Spring Part# SS-
Subtotal: $89.99
Shpg/Hdlg: $13.49
Rush Srv.: $0.00
Tax: $0.00
==========
Total: $103.48

So the mono kit works with the JCW springs? Anything else I need to buy? After I do this I should be able to get rid of the air shock I am running now and go to a gas shock?

You guys have convinced me the JCW are the way to go - darn if they're not on back order 'til the 27th of March.

doug you are behind me. ordered last week and got the backorder notice today. :(

You will need to buy a mono poly kit and then VERY CAREFULLY trim the lips off the pads so they fit!

Mono's are 2.75" wide and thin on both ends and 2.25" wide and thick in the middle whereas multi's are 2.5" wide and the same thickness their whole length!!

NOBODY to the best of my knowledge is re-popping real copies of GM mono's!!

pdq67

pdq, do i use the multi spring front eye bushing or the mono one?
(2 different part #'s)
i am trying to have everything i need in one spot.

thanks

I see that I'm not the only one waiting for these springs. I ordered mine on Jan 15th. They were originally to ship on 2/4, but were back ordered until 2/28 and then back ordered again until 3/4. I hope that I get them before the warm weather gets here!!

I just went to JCW and they show an expected ship date of 04/05 for that spring number. I am concered because I currently have multi perches with mono leaves. My mono's are Graphite springs from Corvette Brakes and they are twice as thick as standard momo's. Will the JCW 3 leaf fit in my multi perch without any gaps? Will they be too fat or too skiny? Right now I have the mono spring, an aluminum spacer, a top poly pad, and 2 2*pinion shims. I had a hell of a time getting the pinion angle correct. Will I have the same pain in the *** time with these 3 leaves? 1st gens cam with 3 leaves so I would think the pinion angle should be ok, but I could be wrong. Lord knows I have before.

I just went to JCW and they show an expected ship date of 04/05 for that spring number. I am concered because I currently have multi perches with mono leaves. My mono's are Graphite springs from Corvette Brakes and they are twice as thick as standard momo's. Will the JCW 3 leaf fit in my multi perch without any gaps? Will they be too fat or too skiny? Right now I have the mono spring, an aluminum spacer, a top poly pad, and 2 2*pinion shims. I had a hell of a time getting the pinion angle correct. Will I have the same pain in the *** time with these 3 leaves? 1st gens cam with 3 leaves so I would think the pinion angle should be ok, but I could be wrong. Lord knows I have before.

The 3 leafs will fit in the multi perches. That's what I have know. I used multi leaf poly pads and a 3/8" thick piece of alum. flat stock about 5"-6" long. To take up the space. Trim off the lip on the pads flush.

I went to order mine a year ago and had the same issues.... on back order, month after month.
I ended up getting the 4 leaf Z-28 springs (used with my mono perches) and am very happy so far. Only issue is the gap between the perch and shock plate (which I'm fine with, no hard corners at the strip :D ) and I could add some flatstock to take up the gap. I also left out the bottom pad.

So here's a pic.

http://i10.photobucket.com/albums/a130/Dougs68Camaro/DSCF0001-2.jpg

pdq, do i use the multi spring front eye bushing or the mono one?
(2 different part #'s)
i am trying to have everything i need in one spot.

thanks


Mark,

Front eye bushing comes already installed in the jcw spring.

thanks dave, you just saved me $50 :)

I just found out that my JCW springs have been back ordered again and are now expected to ship on 3/17 ( ordered 1/15). I would really like to get new springs in by May. Does anyone have recommendations on a good alternative for a Mono leaf replacement other than a mono leaf? I have everything else, I just need some springs. If they back order again, I would like to have a backup plan.

I just found out that my JCW springs have been back ordered again and are now expected to ship on 3/17 ( ordered 1/15). I would really like to get new springs in by May. Does anyone have recommendations on a good alternative for a Mono leaf replacement other than a mono leaf? I have everything else, I just need some springs. If they back order again, I would like to have a backup plan.
I had the same problem back in 2005!

I ordered the JCW Nova 3 leaf springs on July 19, 2005. They showed them “in stock” when I ordered them. Only when I called to see why it was taking so long did I learn they were on backorder. They told me they would ship them on Aug. 22. In September I called them again. They told me they were still on backorder and would ship on Sept. 22. I had enough and canceled the order. :mad:

I then ordered some 4 leafs from Tamraz. They arrived less than a week later. They are very nice springs and not very expensive. I called first to make sure they had them in stock! :thumbsup:

Thanks. So the Tamraz springs fit OK as a mono replacement?

Thanks. So the Tamraz springs fit OK as a mono replacement?
The four leaf springs I used are multi leafs. I swapped the rear end for an 8.5 inch with multi leaf perches at the same time and the 4 leaf springs fit perfect with Energy Suspension multi leaf poly pads.

If you don’t want to swap out your 8.2 ten bolt Detroit Speed & Engineering makes a mono to multi leaf conversion kit (http://www.detroitspeed.com/productpages/indproduct/rearsuspensionprod/mono_to_multi_prod.htm) that is designed for using multi leaf springs on mono perches.

I just found out that if you pay by credit card when ordering from JCW, if the springs don't ship within 60 days of your order, they automatically cancel your order.

I ordered on 1/15, and they have back ordered several times and just cancelled. I went ahead and reordered again. The current ship date is 4/1. We'll see.

I have potentially bad news guys.

The JCW springs are the exact same springs I put in my car a few years back. I bought them from Vette Brakes in FL. I called them this afternoon to see if they still sold them. They told me they are discontinued.

The springs are made by Triangle. http://www.triangleusa.com/products.html

I called Triangle, gave them the part number and sure enough they are discontinued.

I suspect this is affecting your JCW order and I wouldn't hold my breath expecting them to ship from JCW.

UPDATE 1:

Did a little more digging.

The kind lady at JCW told me the springs are sourced from a company called John R. Spring Service out of Michigan. The part number is still the same, 21-245.

http://www.johnrspring.com/leafsprings.htm

So I called up John R. Spring and another kind lady told me they have been out since August 2006 and have no idea if/when they will get anymore. She did give the the number to their parts dept. I called and spoke to Steve and he confirmed that part is no longer available and he didn't really have another part that would cross reference. He made the comment "nobody is making a full taper 3 spring mono anymore". If you want to call him here is the number: 248-588-7200

UPDATE 2:

So I called my local driveline guy and he said that Dallas Spring (http://www.dallasspring.com/) sells them. I called Dallas Spring and sure enough they have some in the warehouse, the part number is 21-245R. The lady on the phone was very helpful and the specs are the same as the 21-245, she even said the catalog lists them for 67-69 Camaros. They don't sell to the public but if you call them she can direct you to a local source that does.

UPDATE 3:

I just got off the phone with St. Louis Spring (http://saintlouisspring.com/) and they have them in stock for $96.89 each. They sell to the public. I asked if they were made in the USA or Mexico, he said they make them in house.

Good luck guys!

Great detective work there Funk! :thumbsup: I'm glad I ordered my JCW three leafs before all of this...

Thanks for all of the research Funk!!

I called Dallas Springs and they had a distributor not too far away that had them in stock. I just picked them up this morning and cancelled my JCW order.

Glad it worked out Erik. You will enjoy the springs. Post pics when you get them installed.

Another member just pointed out to me that I have a set of these springs used listed over on the classifieds:

http://www.camaros.net/classifieds/showproduct.php?product=25345&cat=8

If someone here can use them let me know and we can work something out. I realize that referencing a for sale item here may be improper so if it is please delete the post.

Not an advterisment just another resource:
http://1967-81camarocarparts.com/catalogPDFs/F1%2006%20suspension.pdf

Classic Muscle sells 3,4,5 leaf leaf springs

1 - REPLACEMENT LEAF SPRINGS
*Note: Also see Correct Reproduction Spring Sets.
*Note: All leaf springs have front eye bushing installed.
67-69 252R Multi 3 Leaf Set
(will replace mono leaf) ...........................119.95 pr.
67-69 252A Multi 4 Leaf Set .......................................119.95 pr.
67-69 K00034 Multi 5 Leaf Set .........................................98.95 pr.

Eaton Detroit Spring sells a 3 leaf spring with 175 lb/inch rate.
It's not listed in their catalog, you have to call them.
David

David,

How much are they?

pdq67

Their catalog says mono,3,4,5 and provides 1 price 200ish, I am going to give them a call tomorrow.

I saw it at SEMA and asked their engineer what the rate was. It's a performance street 3 leaf spring at 175 lbs. I don't know the ride height it would yield but they should be able to answer any questions.
David

If that's $200/per spring, I'd go w/ Chicane's springs instead!!

pdq67

I just got off the phone with Gary @ Eaton Spring...

They do make a 3 leaf setup (non performance) $289.00 pair, he said they sold perhaps 4 pair in the last 3 years. They sell the 4 leaf performance set up the most for the 1st gen camaros @ $439.00 pair.

That sounds like more justification to buying a 5 spring setup for around $100.00 pair and removing the middle leaf!

Too bad they are so high, the Hotchkis leafs are $387.00 from Summit and the shipping would be cheaper. They had a 3 leaf on display at SEMA, but I guess the perf spring they told me about was a 4 leaf...
Sorry for the confusion.
David

How do all these different spngs mentioned compare to Hotchkis 3 leaf springs (2407C). I got a kit from Jegs I think maybe 6 years ago and I'm finally getting brave enough to tackle it. I'l be swapping out the 8.2 mono leaf for a 8.5 Nova and maybe doing SFC at the same time.
I have a few other questions about this whole process that I haven't found specific enough answers to yet in older threads. I started another thread about the right sequence if any of y'all have suggestions I'd appreciate them.

OK,

I want to put the order in NOW for the 3-leaf replacements for my mono but am now more confused than ever.

I go to JCW site and it says they will ship in 3 days, is this not the case? are they discontinued?

Also, I haven't found an install kit for mono's, just multi-leafs, where can I get the kit for mono's?

Basically, I have 40 year old parts on my '68 and need to know what all to get to do this swap correctly.

I thank you in advance for any help that you can give me.

DV

I just bought the Hotchkis rear leafs for my car. They came on Friday. I have mono leafs on my 67 now. The hotchkis springs come with everything you need to install. And i think they are a better spring than than JCW. Bit more $$ though. $379
Im in the process of installing them now.

Craig,

I followed your thread on that, so I hope I can learn something there.
I think I'm going to take the Hotchkis route.

Any tips you can think of would be great. I'll keep refering to your other thread as well.

The JCW/Triangle springs are nice because they will fit in a mono perch and there is no bolt head on the top of the spring to interfere with the mono perch.

The JCW/Triangle springs are nice because they will fit in a mono perch and there is no bolt head on the top of the spring to interfere with the mono perch.

The upper pad accounts for the upper bolt on the mono perch. I talked to Hotchkis in depth about this as i was also concerned.

Dustin,
You will love the Hotchkis springs. I can not believe the difference. I will post some tips, as its fresh in my mind, in the other thread as not to bog this one down.

The upper pad accounts for the upper bolt on the mono perch. I talked to Hotchkis in depth about this as i was also concerned.

Craig,

So the upper pad provides enough clearance in the perch that the bolt head does not contact the top of the perch? I assume the bottom of the spring "locks" into the shock plate somehow.

It's been awhile since I researched the Hotchkis springs.

Hi. Anyone looking for 3 leaf springs theres a guy on ebay selling them @$99.50 each plus shipping. Says he has them in stock. His user id is beattiespring.

Craig,

So the upper pad provides enough clearance in the perch that the bolt head does not contact the top of the perch?.

Thats correct. I wasnt sure if the pad was sufficient to compensate for the upper bolt and when i called Hotchkis they told me yes indeed it was. There is also a pad for the bottom of the spring to go between it and shock plate. They told me a lot of people leave this pad off...especially on higher HP cars. The centering bolt on the bottom of the spring sticks thru the hole in the center of the shock plate. I did not use the bottom pad. They told me to tighten down the U bolts real good with a breaker bar and i should be good to go. Thats what i did...so far..so good.

Hi. Anyone looking for 3 leaf springs theres a guy on ebay selling them @$99.50 each plus shipping. Says he has them in stock. His user id is beattiespring.

Much appreciated. I haven't ordered the Hotchkis yet, now I'm cornfused again.

I never would have found them on Ebay either since he spelled Camaro wrong.

I never would have found them on Ebay either since he spelled Camaro wrong.


you can find some good stuff on ebay and craigslist when you search "camero" ;)

What about the springs that "Classic" offers, they are in stock and cost less than JC Whit
They have 3 different ratings, up to a 5 leaf

Could I use this for the conversion?

http://www.rickscamaros.com/product.asp?pf_id=DS-64&dept_id=3510&cm_mmc=RFGEmail_08-_-NewProd06-_-Prod-_-DS64

Sure.

pdq67

This is awesome info! I'm glad I found this thread. I just want to be clear though before I start ordering parts. I have a full mono 67' and I want to replace with multis as a direct swap. I need a pair of 3-leaf JCW springs (ZX942669X at JCW.com) and that’s it? If My pads and bushings are all good do I need new pads anyway? If so, do I want Multi or Mono pads? Can I use the existing tbolts or are ubolts essential? I use my car as a daily driver and don't need extra strength for hard acceleration. I see that JCW has free standard shipping again which covers Canada (minus $11.99 surcharge) so I would like to get on this asap.

Sorry for rehashing this but the thread reads that some people suggest only the springs are necessary and others say pads need to be ordered and trimmed. I just want to get the right stuff the first time.

Thanks!

Ian67 I am with you "CONFUSED" It almost sounds as though the Hoskins setup is the route to go as it is a complete kit, but spendy. I am still thinking about just adding a helper spring to mine and keep the factory original mono. Still in limbo on this point though. Lets keep this thread going a little longer for those of us who are "Suspensionally challenged". Thanks

I'm installing the JCW 3 leaf springs now. I bought all new bushings and pads to install with the springs. You have to trim the lip off the spring pads because the JCW springs are wider than the mono leafs. So far this part of the install is going well. I have to get longer t-bolts or switch to u-bolts for the spring perches because the JCW springs are thicker than the monoleafs. The stock t-bolts are to short to work.
It looks like the ride height will go up by about an inch over the monoleafs.
Good luck.

Craig-
I'd like to hear in detail about the ride/handling difference when you are done.
Thanks.

Tom,
I will give a short report on the springs when I get done. It will be about 1 week. We are having a snow storm so this is good timing for me to be working on the car. Camaros might possibly be the worst car to drive in snow and ice.
Merry Christmas everyone. Craig.

Craig,

I'd highly recommend at least one U bolt per side.

And get a set of the clip-nuts here...

http://www.rickscamaros.com/product.asp?pf_id=RC-469&dept_id=3510

They should be the good ones!! This is important!!!!!!!!!!!!!!!!!!!!!!!!!!!

Please look at the Clip-Nut sticky here too!

http://www.camaros.net/forums/showthread.php?t=83635

pdq67

I am interested in swapping out my old springs as well both front and rear. I want it to go up a little, and not be so soft, I took measurements from axle to bumb stop bolts, and from lower control arm pivot bolt to ball joint mounting surface as per manual, but my book didn't give clear specs for 67 camaros, just 70 and later. Any ideas or suggestions? Whats the diff 3,4,or 5 leaf springs Ive seen all listed?

Ian,

If I had this to do over again b/c now I have new JCW, 3-leaf mono replacement leafs under my car that I have added the 2nd and 3rd leaf's out of my stock, worn out '68 'Bird multi-leafs to better match my about 525 pound cut MOOG 5536 front coils! (BB car here now!!)....

I would use a pair of good stock mono's and a new pair of slappers that slapped right under the middle of the spring eyes and coil-over shock, overload springs and be done w/ it like I did up until I hung onna my slappers on a RR rail ball at a RR crossing and broke onna my mono's!

This stock, lightweight combination, flat works down to like the low 10's is all, imho and the price is right!

pdq67

I am in process of changing the rear springs in my 67 RS. Besides bushings and shackles, what els did you change, can you use monoleaf mounts with multleaf springs, any other tips?

You can use the monoleaf shock plates, perches, etc, with the JCW style 3-leafs.

I've read through every string on the mono to multi leaf conversion and boy is there a lot of info! I was wondering if there is anyone who has done a conversion from mono or multi leaf to any other type of suspension like 4-link, independent rear suspension (IRS), rear coil-over, etc. I have a '68 coupe and have redone the entire front with Global West upper and lower tubular A-arms, QA-1 coil-over shocks, and Hotchkis 1 1/8" sway bar. I'm not sure what would best compliment this in the rear for overall handling. I currently have mono leafs. It is a street car and that is where the focus of my suspension upgrades will be, but I would like to eventually take it to the strip or track on the weekends at some point. About ten years ago I did swap out the original sagging monos with a pair of monos from the swap meet that have solid aluminum bushings and were only used on a drag car. I just don't know if I should stick with what I have and upgrade to poly pads and bushings, swap to multi leafs, or swap to something else. Any suggestions?

Earl
Ewa Beach, HI

I'm sorry I took so long to give my report on the JCW springs.
I ended up switching out to u-bolts instead of trying to find t-bolts to fit. I went to the junk yard and scrounged through the pile of u-bolts till I found a set. I had to drill out the top and bottom spring plates to fit the larger diameter u-bolts. What I don't like about using the mono leaf brackets on multi leaf springs is that the bottom spring plate didn't bottom out to the top spring plate due to the extra thickness of the JCW spring over the mono leaf. The rubber spring pads keep compressing. You can never get the nut tight enough. I ended up double nutting the nuts on the u-bolts so I wouldn't have to worry about them backing out.
I have to say I was disappointed in the ride height of the car. I don't have the before and after measurements with me of the fender lip (I'm away at work) but the JCW springs raised the ride height 2 3/8 inches. I wasn't looking for that. My car looks how my 68 Camaro with air shocks did back in 1974 in high school. I wanted more of a pro touring look.
I only drove the car about 2 miles. I actually liked the ride over the old mono leafs. The mono leafs had a kind of dead sacked out feel. The JCW's felt better over bumps and had a more controlled ride. You could feel the difference sitting in the car, it felt nose down. I wish it didn't have the increased ride height.
I had a 78 Camaro that I put a Herb Adams suspension kit on back in 79. To lower the rear just a bit without changing springs, the rear spring shackles had new holes drilled in them closer to the middle. I might look into trying this when I get home. Or I might just put the mono leafs back in until I figure out what spring I want to get. Hope this helps anyone thinking about the switch. Craig.

Here's some more info about these springs. As all should know the price of these really went up on JCW.Something like 109.00 apiece. Using information from pdg67 I did a Google search on the part number 21-245 and found several places that are using the same part number and are the same 3 leaf springs. Found them in price from 165.00 a pair to 300.00 a pair. I am currently trying to find out what shipping costs would be for me on the lower priced ones. They are available from http://www.internetautosupply.com/catalog/pair-camaro-leaf-rear-springs-21245-p-3941.html

I'm sorry I took so long to give my report on the JCW springs.
I ended up switching out to u-bolts instead of trying to find t-bolts to fit. I went to the junk yard and scrounged through the pile of u-bolts till I found a set. I had to drill out the top and bottom spring plates to fit the larger diameter u-bolts. What I don't like about using the mono leaf brackets on multi leaf springs is that the bottom spring plate didn't bottom out to the top spring plate due to the extra thickness of the JCW spring over the mono leaf. The rubber spring pads keep compressing. You can never get the nut tight enough. I ended up double nutting the nuts on the u-bolts so I wouldn't have to worry about them backing out.
I have to say I was disappointed in the ride height of the car. I don't have the before and after measurements with me of the fender lip (I'm away at work) but the JCW springs raised the ride height 2 3/8 inches. I wasn't looking for that. My car looks how my 68 Camaro with air shocks did back in 1974 in high school. I wanted more of a pro touring look.
I only drove the car about 2 miles. I actually liked the ride over the old mono leafs. The mono leafs had a kind of dead sacked out feel. The JCW's felt better over bumps and had a more controlled ride. You could feel the difference sitting in the car, it felt nose down. I wish it didn't have the increased ride height.
I had a 78 Camaro that I put a Herb Adams suspension kit on back in 79. To lower the rear just a bit without changing springs, the rear spring shackles had new holes drilled in them closer to the middle. I might look into trying this when I get home. Or I might just put the mono leafs back in until I figure out what spring I want to get. Hope this helps anyone thinking about the switch. Craig.


Problem is , you're comparing 40+ year old springs to new ones. Yes they ride better, yes they raise the rear (to a near stock height),and yes you could take out a short spring or two and it "may" lower it.

Did you tighten your rear down after you put her on the ground and bounced her several times?

B/c, if not, you may have tightened her into bushing bind so that they are actually holding her up in the rear.

My JCW springs sat level on my car and to me were a tad soft, only b/c my car has had coil-over shock, overload springs on it for years so was always raised about 4" or so b/c of my large by huge L-60's that measure a modern 298/53-14!

I therefore added the 2nd and 3rd leaf's from my worn out '68 'Bird's 5-leaf multi's to raise her and now she's up like it always was and stiff as a board back there. I will have to see how I like her?

To finish an earlier post Classic Car Springs wants 55.00 to ship a pair of springs to Texas. It seems a little high. Considering that the spring price and shipping are about equal to what JC Whitney is charging with free shipping there isn't the savings I had hoped for. It would be interesting if a few others might see what shipping is to various points to find out if CLassic Car Springs is charging actual shipping or a set price.

Free shipping again today...Not sure how long it will last-

Just an update. www.carparts.com has these 3 leaf springs (21-245) for $153.92/pair with free shipping!

I purchased the 3-leaf springs from Camaro Central. They are marked 21-245 also. I measured the new springs and my old mono springs. I thought this info may be helpful to some, so here it is. The mono spring is .510" thick at the axle mounting position. Each pad is .295" thick. So the entire assembly (spring and 2 pads) measures approx. 1.1" thick, and the mono spring perch is designed for this stock thickness. The 21-245 3 leaf replacement spring is .990" thick. Adding a top and bottom pad would make the entire assembly 1.58" thick which is .48 " thicker than the original mono spring setup. This is why the original t-bolts are too short. My thought is to omit one pad, so that the overall thickness is 1.285" Hopefully this will allow the original t-bolts to work ok. Omitting the upper pad would raise the car by the .295", so I plan to omit the lower pad instead.

The other difference in the replacement springs is that they are a constant 2.5" wide from tip to tip. The mono springs had a hour-glass taper to them. The mono springs are 2.75 inches wide at the rear shackle loop, and narrower at the axle mounting area (maybe 2.2" or so). This means that modifications must be made to accomodate the width variations. The new springs come with front bushings pressed in. These bushings are designed to be the same width as the mono spring, so it should just bolt into the cups. At the axle, the pad(s) need to be modified by cutting off the sides of the pads. At the rear shackle, either spacers must be used before the bushings are installed, or extra-long poly bushings can be used. If you use the original bushings without any spacers, the total width of the bushings will be .25" shorter than the original and may cause to side-to-side movement of the body.

Hope this is helpful.

Jukey3,
Thats how mine was done with the 8.2 and mono perches... left out the bottom pad and trimmed the top ears. Worked fine.
But did use u-bolts and not t-bolts.

Good Stuff, Jukey. Thanks. My springs should arrive today.

Just an update. www.carparts.com (http://www.carparts.com) has these 3 leaf springs (21-245) for $153.92/pair with free shipping!

Be advised. I ordered the springs 10/6. They were "in stock and would ship in 24 hours" according to the website. Now they advise they will ship 10/16??? I've emailed for an explanation that I am not confident I will receive. I hope there is a simple mistake but until I know for sure, I can't advise anyone to use this site to order.

Nova springs are a little taller than the original first gen springs, they will actually be 3/4 - 1-1/2 inch taller than the original camaro springs installed. I think the stance is perfect for a steet car that way though. just a FYI.

Be advised. I ordered the springs 10/6. They were "in stock and would ship in 24 hours" according to the website. Now they advise they will ship 10/16??? I've emailed for an explanation that I am not confident I will receive. I hope there is a simple mistake but until I know for sure, I can't advise anyone to use this site to order.

The company responded to my email apologetically saying the website was not showing in real time...:sad:
The springs are supposed to ship on 10/16. We shall see...

I have a 1969 Camaro with Mono Leafs...I am going to purchase the Multi 3 from Carparts. What else will I need to purchase to have a successful installation?

Thanks

Thanks for all this information!

I'm glad I checked this out before I got started, and now I have a new twist.

Long story short, I ordered the following from JCW (they arrived almost instantly)

865317 HIGH LIFT LEAF SPRINGS 68-72 CHEVY

I did this because I was looking to raise the rear about 2 inches from what it is now. But I don't think I yet realize how low the rear has sunk over the years. (It has the original mono leaf currently). I am also not looking for the 'over-pressurized air shock' look, but was hoping for the 'solid as a rock' look that the right stance gives.

I get the picture I think about what to expect as I transition to the multi from the mono, but are there any thoughts about this spring height? I'm thinking perhap I want to remove 1 or 2 leafs before I even get started...?? These are 5 leaf springs.

The company responded to my email apologetically saying the website was not showing in real time...:sad:
The springs are supposed to ship on 10/16. We shall see...

Any update Tom? The web site states mine will ship in Nov sometime.

How long ago did you use that part number?

Is that the online catalog?

The company responded to my email apologetically saying the website was not showing in real time...:sad:
The springs are supposed to ship on 10/16. We shall see...

My springs are now backordered. :mad: They(carparts.com) are saying they should ship 10/26. Customer service response has been "OK".

Still no springs. And no response after 2 status inquiries. I don't recommend using this vendor. I think I am gonna can this idea and go with the Hotchkis springs...

My springs just arrived!:hurray:

They appear to be well made and are marked with the 21-245 number in paint although carparts.com uses part number 942669. The front bushings are pressed in already. I know what I'm doing this weekend.:yes:

I'd say OK to use this vendor but don't expect parts to be in stock.

Well after a long search for a "How Too" and all the help from this website I finally got all the parts I need to convert my Mono to Multi.
I took video of the whiole process and plan on putting it on You Tube once I'm done?
Well, ran into a snag last night? I installed my new Multi's from JCW (took one week of backorder) 21-245 and installed them with the Detroit Speed Mono to Multi leaf conversion kit.
Once I got it all in, the plate that is suppose to go on top of the multi leaf is loose in there, like I slid the whole thing out after I had the u bolts finget tight on the lower plate? I let the car back down and didn't tighten anyhting yet but there is almost a 2 inch gap on top of the leaf to the perch and the leaf isn't bolted tight to anything?
Anyone else have this happen?

Sorry I don't have any help for you, I still haven't done mine yet. The car has been in storage with only interior work being completed. I just wanted to comment that I strongly request that you post the video on Youtube when your done, I would love to see it!

Thanks!

Well, ran into a snag last night? I installed my new Multi's from JCW (took one week of backorder) 21-245 and installed them with the Detroit Speed Mono to Multi leaf conversion kit.
Once I got it all in, the plate that is suppose to go on top of the multi leaf is loose in there, like I slid the whole thing out after I had the u bolts finget tight on the lower plate? I let the car back down and didn't tighten anyhting yet but there is almost a 2 inch gap on top of the leaf to the perch and the leaf isn't bolted tight to anything?
Anyone else have this happen?

Could it be that the conversion kit was for Mono to 5 leaf multi instead of 3?

That's what I'm thinking?
Here is the link to You Tube
http://www.youtube.com/watch?v=B8g95YgqA7Y

The DSE spring is a 5 leaf, you don't need the spacers on the U bolts for a 3 leaf spring. You DO need a spacer on top of the leaf with a hole in it to accept the center bolt head.

That makes sense! I'm going to have to replace the bolt in the leafs because it's a machine bolt and has no head on it to go into the spacer plate. I'm gonna clamp the hell outa it and replace that bolt, should take care of it?
More videos for proof tho.....

Does anyone have a measurement from the rear wheel opening to the center of the wheel using the 3 leaf spring from JC Whitney on a 67?? I am running 27" tires and I'm concerned with rubbing. My mono's are shot. I'm rubbing now over bumps.

after reading i am so confused. i have a 69 camaro mono that i want to go to a multi can someone please tell me part numbers for JCW for springs bushings and anything else needed to do this using my mono perches. any help would be great!!

For the last 2 posts;
The measurement from the ground to the top of the fender trim is now 28-29 inches.
JCW SKU 1JA 942669
You may also need to replace the bushings? In my case I didn't have to but everything I read said to replace with POLY bushings. The leafs come with the fronts pressed in so you only need the rear ones.
Detroit Speed PART NO.041101. Either you can order the kit or just buy the U bolts and the top plate that goes between the sppring and the original perch. If you don't buy the kit you'll can either just leave the gap in there or fab a specer oplate instead of those aluminum spacers that come in the kit. It wwas easier for me to buy the kit.
I wwould also suggest that you look into buying the J clips but again my were like new so I didn't have to. They come in a pack of 6.
http://www.camarocentral.com/product_p/fcb-44.htm
Hope that helps? I'll update You Tube one of these days....

OK,

I want to put the order in NOW for the 3-leaf replacements for my mono but am now more confused than ever.

I go to JCW site and it says they will ship in 3 days, is this not the case? are they discontinued?

Also, I haven't found an install kit for mono's, just multi-leafs, where can I get the kit for mono's?

Basically, I have 40 year old parts on my '68 and need to know what all to get to do this swap correctly.

I thank you in advance for any help that you can give me.

DV


Well, almost 2 years later, I just ordered the 21-245's from Carparts.com today.

I gave up on this part of the project until now. So I now need to order the SPRING PADS and Rear Shackle kit, correct?
anything else that anyone thinks I should order now?

Well, you'll need those pads, U Bolts, Rear poly bushings, and maybe J clips based on what shape yours are in, best to just replace em though.
I went with the Detroit Speed kit and cut down those blocks to 3/8 of an inch because I used 3 leafs.

You're saying that the spacers that were causing that gap in your video, you cut them down to 3/8"?

yep, just to take up the gap

Well, on Wednesday, I received ONE of the new springs from Fed-Ex, I would say that is fast shipping had I got both of them. Now I wonder how long its going to take to get CarParts.com (JCW) to send me the other one.

It's always something.

Fed-Ex tracking says I'm getting the other spring today, now my new question is:

If I order a new set of shackles, why is it different between multi leaf and mono leaf? and which is the set I need for the JCW 3 spring set?

I assume since the JCW 3 spring is a close replacement for my mono's, that the mono shackle set up, and the mono spring pads are what I need. Is this correct?

here is a link to the multi vs. mono shackles on eBay:
MULTI http://cgi.ebay.com/ebaymotors/1967-69-Camaro-Firebird-Poly-Leaf-Spring-Bushings-Multi_W0QQcmdZViewItemQQhashZitem4398ae0a2bQQitemZ 290324351531QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAc cessories
MONO http://cgi.ebay.com/ebaymotors/1967-69-Camaro-Firebird-Poly-Leaf-Spring-Bushings-Mono_W0QQcmdZViewItemQQhashZitem4398ae0ac9QQitemZ2 90324351689QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAcc essories

It think this may be the answer to my question (quoted from this thread)
Yes I did the swap myself. I obtained all the info I needed on the swap off of the forums. I used Prothane poly bushings for a mono leaf set up. The pads need the lip to be trimmed off. I just used my bench grinder and zipped them right off.
But this thread has me confused. It has people posting about multi-perches, mono-perches, etc. etc.
Sorry if I'm asking something that has been covered, but after reading this thing 4 times, I get more confused. :)

Multi perches are deeper than mono perches and depending on what style you have depends on what if any spacers/shims are needed.

I have the mono perches, and am assuming that the mono pads will work for the 3-leaf springs, but its the shakles in the rear I am most confused with.
The post I quoted above states he used Prothane bushings for a mono set-up, and since he said 'bushings' I'm assuming he was talking about the ones on the shackles. I'm looking for clarification before I order. I'm actually surprised there's a difference, but it looks like most places carry mono and multi bushings for the shackles.

Alot of good info here on this. I have purchased the 3 leaf JC Whitney springs but also have aquired a multi leaf 12 bolt rear thats superior to the mono leaf 10 bolt thats in the car. So I am planning on installing the 3 leaf springs with competition engineering thumper bars, and 12 bolt multi leaf rear. It appears the Thumper bars are designed to replace the lower shock mounting plate. Anyone familiar with this?
Also you guys that put in the 3 leaf springs did you have to use multi leaf shocks to make up the length difference? I see there are different shocks listed for the mono vs. the multi leaf spring cars so I would think you have to use the multi leaf shocks if you install these 3 leaf springs? Help me out guys Im trying to get my ducks in a row here.

Mono perches, 3 leaves, mono plates and same shocks in my case.

Alot of good info here on this. I have purchased the 3 leaf JC Whitney springs but also have aquired a multi leaf 12 bolt rear thats superior to the mono leaf 10 bolt thats in the car. So I am planning on installing the 3 leaf springs with competition engineering thumper bars, and 12 bolt multi leaf rear. It appears the Thumper bars are designed to replace the lower shock mounting plate. Anyone familiar with this?
Also you guys that put in the 3 leaf springs did you have to use multi leaf shocks to make up the length difference? I see there are different shocks listed for the mono vs. the multi leaf spring cars so I would think you have to use the multi leaf shocks if you install these 3 leaf springs? Help me out guys Im trying to get my ducks in a row here.

I would think about getting a full 5-leaf set if you are going to have the deeper Multi perches. The attractiveness of the JCW 3 leafs is because you can fit them into the mono perches. You could sell the JCW's easily, and buy 5-leafs, but that's just my $0.02

also, the difference in multi shocks and mono shocks is just the thickness of the bottom bolt that holds the shock to the shock plate. If you have multi-plates, then there is a thicker bolt, for those with mono-shock plates, there is a sleeve that goes into the shocks, and the thinner bolt then goes through that sleeve.
Once the sleeve is taken out, there is no difference between the mono or multi shocks.

Hi Everyone,

I'm doing the conversion, bout the 3 leaf JCW leaf springs and just have a question about the plate that goes on top of the leaf springs between the leaf springs and the top perch (I think it's called).

Earlier posts said this:
"You DO need a spacer on top of the leaf with a hole in it to accept the center bolt head." -From David Pozzi

What does this spacer do? Does anyone know where to get just this spacer? Detroit Speed makes a kit that comes with the spacer, but I don't want to buy the whole kit (Maybe I can get just the spacer from D. Speed - as one of the earlier posts hints at).

-Thanks
-David

I have a small gap where my perch and plate do not fully come together. I think others have eliminated this gap by either leaving out one of the spring pads, or going with a small spacer.

If I'm not mistaken, the one from Detriot Speed is for converting the mono perches to accept a 5-leaf multi spring. That much of a spacer is not needed for the JCW 3 leafs.

As far as that plate that goes on top, it's really nothing more than a metal plate. I wish I would have measured it?
Anyways, it's as wide as the spring and as long as the perch if that helps?
Like I posted earlier I but my aluminum blocks down to 3/8" to fill in the gap on the sides of the springs. Are they really needed, I'm not sure but doesn't appear to be structurally needed? Well, now I cut em down and I am gonna go to a 5 leaf this winter, the damn car still doesn't have the stance I
'm looking for!
Hope this helps boys!

Thanks Guys.

By the way, Bucky, that you tube video was a big help.

-David

If you've got tired old mono leaf springs, don't wait any longer. Spend $200 and put on a new set of springs.

I just replaced my monos with the JC Whitney 3 leaf spring and poly bushings. I can't believe the difference it made, both in ride and stance. :hurray: Why didn't I do this sooner?

Because for me it is good man. You did a good replacement. :thumbsup: I like your monos.

Thanks Guys.

By the way, Bucky, that you tube video was a big help.

-David


I finally updated the video on You Tube. Here's the link
http://www.youtube.com/watch?v=pncTsWeNK_o

Hey Bucky, do you still have those spacers in there? If you want the car to sit higher, you should not use them.

See mine for example.
http://www.camaros.net/forums/showthread.php?t=179202

Guys, This has been a great find. I do have some questions too. My 67 has a mono 8.2 in it, I assume it has mono perches. I bought a 12 bolt out of a 69 Camaro without asking if it would fit my 67. Will it?! and I am looking for stock ride height as this will be a show car/ Power Tour driver, Not raced. Are the JCW's or Carparts still the way to go? This is the exact replica of what I am building..and want this exact look.

Thanks!
Jason

The 67-69 rearends are all interchangeable.

You'll need to have the correct hardware to mount them- according to what springs you are using.

My car originally had a 10 bolt but upgraded to a 3:55 posi 12 bolt for $500.............................................. 18 years ago. :yes:

Wow good deal Beth! I scored a nice rebuilt one with 3:73's for $800!

anyone know what size/length u bolts i need for the whitney 3 spring converstion with mono perches???
picking up my springs tomorrow
thanx

anyone know what size/length u bolts i need for the whitney 3 spring converstion with mono perches???
picking up my springs tomorrow
thanx
If you don't want to drill the perches, I have the size listed in my post. I'll see if I can find it...

I used 7/16" x 3" x 7.5" They are too long but that is slightly advantageous if you are working alone.
http://www.camaros.net/forums/showthread.php?p=1426402#post1426402

I'll be taking those spacers out this week to try and finally correct the issue. I'll update as soon as I get it completed....
Fight the good fight boys!

I used 7/16" x 3" x 7.5" They are too long but that is slightly advantageous if you are working alone.
http://www.camaros.net/forums/showthread.php?p=1426402#post1426402

thanx man!!

just got home from whitneys and they had the springs in stock 94.65 each but i got a car club discount 15% off for bringing a group of car nuts there to tour the place last summer. so 174 out the door for the pair and they have 8 more in stock if anyone is looking!!

I want to convert my '69 Camaro convertible from mono-leaf to multileaf rear springs. I have the 3 leaf springs from JC Whitney, but am not sure what other adaptors or hardware I need. I see that there are various mono-to-multileaf conversion kits offered for sale - Are these relly needed (none of the posts refer to anything lik ethis)? If so, can anyone recommend a source?

Assuming everything comes apart ok all you need is 4 u-bolts.


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If you've got tired old mono leaf springs, don't wait any longer. Spend $200 and put on a new set of springs.

I just replaced my monos with the JC Whitney 3 leaf spring and poly bushings. I can't believe the difference it made, both in ride and stance. :hurray: Why didn't I do this sooner?
I am about to do this with my '69 ragtop and wondered what(if anything) you needed to make the change. I see various adapter kits, U-bolts, etc. for sale for a mono-to-multi leaf swap - what was your experience?

I see a photo from an earlier post of yours showing the axle, U-bolts, etc. I was having trouble understanding "why the U-bolts?" until I came accross another post that mentioned that the monoleafs were attached by a T-bolt that is not done with multi-leaf springs. So now it's starting to make sense to me.... sometimes I'm kinds' slow, maybe? Thanks for the photo. I plan on keeping the stock shock mounts, using poly bushings and KYB shocks. Might have to "tweak" the routing of the brake line along the rear axle because of the U-bolts.

I got mine! The front bushings are installed off center and had to center them with a big hammer. They look good. Gonna be a few weeks til I have a rear end bolted up. 6 or 7 inch U bolts?

do i need spacer blocks between pearch and shock plate for this swap??
I know some companies make a kit for the 5 leaf swap but what about the 3 leaf ones??? is this safe as is????
should i just loose the pads and bolt the spring in without??
http://i15.photobucket.com/albums/a351/Tonystoys123/yellow%2068/IMG_2209.jpg
http://i15.photobucket.com/albums/a351/Tonystoys123/yellow%2068/IMG_2208.jpg

I left out the bottom pad. If you take out the top pad, ride height will increase by as much.

removed the top pad, and installed shocks and then set it on the floor and tightened shackle bolts.
http://i15.photobucket.com/albums/a351/Tonystoys123/IMG_2327.jpg
http://i15.photobucket.com/albums/a351/Tonystoys123/IMG_2328.jpg
http://i15.photobucket.com/albums/a351/Tonystoys123/IMG_2329.jpg

http://i15.photobucket.com/albums/a351/Tonystoys123/IMG_2333.jpg

Nevermind.....you got it :yes:

Just wanted to let the community know that carparts.com has these 21-245 springs in stock for $78 ea. Just ordered two last night, and they shipped today.

On Your Order:
Part #: JRS21245
John R Spring Leaf Spring
Qty: 2.00 Price: $ 78.39

Are you installing these soon ?

I would like to know what the ride height ends up being. Measure from the floor to center of rear fender opening.

I currently have 5 leaf springs and would like to lower it some.

Thanks for the tip !

Hi Beth,

I'll be installing these within the next 30-60 days hopefully... I still don't have the car back from the body shop, so it's hard to say. Stocking up on parts while I can. I'm going from a mono-leaf to these 3-leaf springs.

I got them installed and am a bit concerned with ride height.Fender lip is six inches above the tire BUT this is on a bare shell too without even the trunk lid bolted up. Hoping it comes down at least 3 inches with everything fully assembled. That won't even happen for at least a year. I do know I need to replace the POS graphite impregnated bushings I put in because they sqeak horribly. Del a lums are in the works. AFTER I find out what final ride height is.

My 68 measures 16.5" from wheelwell lip the center of the center cap.


23296

I guess I'll jump on the wagon as well, but need some help on what to order due to the fact my plain jane 67 327 4-spd bottoms out easily with just me (190lbs) and another 100lbs or so in the trunk. Another issue is the wheel hop (open diff 3.73's) however the axle and springs were swapped out at some time before I owned it and currently it already has the 4 leaf springs and 3894859NF rear axle (67-69 camaro 8.2")

So, I want to reduce wheel hop, boost the soft load capacity, and retain the current height, 15" front and 16.25" rear, measured from center of wheel to fender lip. I've spent quite some time reading up and was thinking Moog 6320's up front and jcw 4 leaf z28 springs in back, but I don't know if my swapped rear would mess with anything like height expectations. Also, anyone have feedback on wheel hop control without actually lowering any? I've read that stiff springs are part of the equation as well as rear ride height... No plans to race or anything.

thanks.

thanks! So, are the 80-335 part number springs the same as the 4 leaf z28 ones in JCW, does anyone know?

Just wanted to let the community know that carparts.com has these 21-245 springs in stock for $78 ea. Just ordered two last night, and they shipped today.

On Your Order:
Part #: JRS21245
John R Spring Leaf Spring
Qty: 2.00 Price: $ 78.39

thanks! So, are the 80-335 part number springs the same as the 4 leaf z28 ones in JCW, does anyone know?

Ok, according to this chart/part number list, 80-335 is what I want.

http://www.generalspringkc.com/images/products/thumbs/80-335.jpg (http://www.generalspringkc.com/index.php?p=product&id=957&parent=90) 67-81 Camaro, Firebird Iroc High Performance leaf springs - 4 leaf (http://www.generalspringkc.com/index.php?p=product&id=957&parent=90)
Product ID : 80-335

But looks like the 21245 is a 94 lb spring rate, the 80-335 is 126 lb rate, and thats close to Daves listing for stock rears? I found a great chart that sums it all up, linked below, and it also lists a 5 leaf 21-901 and 21-915 with 140lb rate, but too much arch... Thoughts? Guess I will opt for the 80-335.

http://huskyspring.3dcartstores.com/Camaro-Rear-Leaf-Springs-1967-1969_c_843.html

Got my 4 leaf z28 flavor jcw springs, removed one side, and everything went smooth as can be, user error not withstanding, but two things, one, as in the pic, the arc on the old springs is significantly greater, hope it's rate was low comparatively...
And on the front bushing, they look pretty different, is that a problem?

I'm sure if you stood on one then the other you'd see a difference :yes:

AND be sure to set it back down before tightening the leaf eye bolts :)

I'm sure if you stood on one then the other you'd see a difference :yes:

AND be sure to set it back down before tightening the leaf eye bolts :)

And be sure and feed the new spring's front end OVER the parking brake cable before bolting in the rear shackled end, if doing it back to front :noway:

So, "for the record" the 4 leaf versions yielded 16 1/4" from the center to the edge of the wheel well, and, compared to the old multi leafs I had at least, greatly reduced wheel hop! One hopped, one did mildly, and the last one didn't hop at all, plus I inadvertently ended up testing my rev limiter :hurray:
It was nice to not spell something in morse code at least for once. And the tailpipes touch the new leafs, so I can still tap out messages now too!

I did feel one cage nut slipping a little as I put in the last bolt, that should be fun next time~

thanks for the posts and info guys.

-Tom

For those that have done the swap -- are you able to use mono-spring shocks or did you need to use multi-spring shocks. I'm retaining the mono plates. Is there a difference in the shocks?

Here's a quote from an earlier post.. "also, the difference in multi shocks and mono shocks is just the thickness of the bottom bolt that holds the shock to the shock plate. If you have multi-plates, then there is a thicker bolt, for those with mono-shock plates, there is a sleeve that goes into the shocks, and the thinner bolt then goes through that sleeve. Once the sleeve is taken out, there is no difference between the mono or multi shocks."

Does this mean multi-spring shocks are OK? Also, Bilstein shocks can be found for the 68-69 in mono/multi versions, but not the '67. Will they work anyway?

I reused the mono shocks (KYB) with no trouble. I've also tried to press out the center sleeve to use these shocks with traction bars but the entire bushing came out so it depends on the shock it seems.


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I am getting ready to make the swap to the 3 leaf spring. I have one question on how to tighten the bolts. I have read not to tighten the bolts until the car is on the ground. but which bolts? I am assuming that I will tighten all the bolts at the front of the spring when I install it and also tighten all the u-bolt nuts before lowering the car. This leaves on the shackle bolts, do I leave the top and bottom shackle bolts loose until the car is on the ground and then tighten?

thanks for any help, I want to get this swap right the first time

I am getting ready to make the swap to the 3 leaf spring. I have one question on how to tighten the bolts. I have read not to tighten the bolts until the car is on the ground. but which bolts? I am assuming that I will tighten all the bolts at the front of the spring when I install it and also tighten all the u-bolt nuts before lowering the car. This leaves on the shackle bolts, do I leave the top and bottom shackle bolts loose until the car is on the ground and then tighten?

thanks for any help, I want to get this swap right the first time

You should tighten the U-bolts and shocks before it's on the ground. If you did them on the ground they would appear tighter because they are under tension. Leave the rear shackle nuts loose and put the car on the ground and bounce it a bit to settle before tightening them. No sweat.

The car doesn't necessarily need to be on the ground. Jack stands under the axle tubes will be the same effect and allow easier access.
Definitely bounce the rear end several times.

If anyone is looking for a set of these 21-245 3-leaf springs, I've got a set for sale in the classifieds. I just bought a Nova rear with multi-leaf perches, and no longer have a need for these. They're brand new, never installed.