Leaf spring mounting pad question.? - Team Camaro Tech
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post #1 of 14 (permalink) Old Jun 27th, 08, 06:21 PM Thread Starter
Larry
 
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Leaf spring mounting pad question.?

I am putting the JCW 3 leaf springs in my 67 Camaro in place of the original mono springs. I am looking at two different "leaf spring mounting kits" one is for mono springs and the other for multi. WHich do I need to use and why? What are the differences? Are the rubber mounting pads different? HELP
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post #2 of 14 (permalink) Old Jun 27th, 08, 06:42 PM
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Re: Leaf spring mounting pad question.?

get rid of the oem spring perches on the housing and get some Mopar style mounts welded on and just use your stock shock plates and some 7/16" u bolts from NAPA.
just totally get rid of the rubber pads altogether- all they do is cause wheelhop when you get on the gas.

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
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post #3 of 14 (permalink) Old Jun 27th, 08, 07:23 PM
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Re: Leaf spring mounting pad question.?

Umm, what if he just wants to install the springs and not weld new spring perches?


Get the multi leaf one, my guess is that the difference between the two kits is that the stock mono leafs are wider at the spring eyes so the bushings are wider.
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post #4 of 14 (permalink) Old Jun 27th, 08, 07:30 PM
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Re: Leaf spring mounting pad question.?

Also be aware your car will sit considerably taller in the rear, the stock mono have sagged over the years. Get the kit, that way everything is right there and easy. Just did mine in the 67 bird, huge difference in the rear ride.
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post #5 of 14 (permalink) Old Jun 27th, 08, 07:35 PM
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Re: Leaf spring mounting pad question.?

The spring perches for cars with orginal multi-leafs have a deeper pocket for the spring to fit it into. I'm not sure which pads you shuld use, but on my X11 i installed Hotchkiss multi-leafs in mono-leaf perches with only one pad on the bottom (under the spring) and never had any problems.

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post #6 of 14 (permalink) Old Jun 28th, 08, 03:33 PM Thread Starter
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Re: Leaf spring mounting pad question.?

BTT. Need some info from someone who has done this swap.
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post #7 of 14 (permalink) Old Jun 28th, 08, 05:42 PM
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Re: Leaf spring mounting pad question.?

You will be fine w/ JCW's 3-leaf springs except for having to trim the housing pads lips.

Mono's are...................

2.75" wide and thin on both ends and 2.25" wide and thick in the middle w/ just a "dog-knot" tit at the bottom middle to locate them.

Whereas the multi's are all 2.5" wide and evenly thick along their length w/ a bolt-head on top and a nut on the bottom.

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post #8 of 14 (permalink) Old Jun 28th, 08, 05:52 PM Thread Starter
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Re: Leaf spring mounting pad question.?

Thanks for the reply, So which pads & kit should I buy?? multi or mono?
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post #9 of 14 (permalink) Old Jun 29th, 08, 04:36 AM
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Re: Leaf spring mounting pad question.?

I have the 4 leaf multi in mono perches. I used the multi kit.
For the top pad I cut the metal sleeve off creating a pocket for the top of the bolt, and left the bottom alone since the shock plate has a hole for the bolt and pad.
There is a gap between the plate and mount but I haven't had any issues in a 2 years or so. Also be sure to use 4 U-bolts and S-can the T-bolts.


68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #10 of 14 (permalink) Old Jun 29th, 08, 07:22 AM
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Re: Leaf spring mounting pad question.?

Right, put the "T"-bolts in a can up on the shelf.

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post #11 of 14 (permalink) Old Jun 29th, 08, 08:26 AM
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Re: Leaf spring mounting pad question.?

Quote:
Originally Posted by shore-power View Post
Thanks for the reply, So which pads & kit should I buy?? multi or mono?
Go with 67 shock plates
All multi leaf plates are for staggard shock setups in 68-9.
I don't think you can even get multi leaf plates for a 67 non staggard shock setup, and the mono plates will work fine with the multi leafs.
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post #12 of 14 (permalink) Old Jun 29th, 08, 09:24 PM
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Mike Petrovich
 
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Re: Leaf spring mounting pad question.?

I had the original mono springs, and replaced them with the JCW style 3 leaf springs (purchased at St. Louis Spring). I used new mono leaf pads. Like pdq67 said, consider trimming off the lips on the pads. I still need to get that done...

1968 327 sport coupe. Son of original owner.
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post #13 of 14 (permalink) Old Jun 30th, 08, 12:19 AM
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Re: Leaf spring mounting pad question.?

Quote:
Originally Posted by 400bird View Post
Umm, what if he just wants to install the springs and not weld new spring perches?
when i did my Nova, i paid $17 for the pair of perches from a circle track supplier, and paid a guy $30 to weld them on in the same place and at the same angle as the stocker. add in another $20 or so for the u-bolts and a few bucks for gas to drive around and get it done, and i had about $75 into the whole deal.. and got it done the way GM should have done it in the first place.
how much are those installation kits everyone keeps talking about?

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
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post #14 of 14 (permalink) Old Jun 30th, 08, 11:47 AM
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Re: Leaf spring mounting pad question.?

Quote:
Originally Posted by shore-power View Post
Thanks for the reply, So which pads & kit should I buy?? multi or mono?
I have done the swap with both. First I had my mono leaf 8.2 rear using the JCW 3 leafs. I used the monos for that because the spring perches weren't as deep. Also using the 3 leafs I then changed out the rear to a 12 bolt posi unit. On that I used the multis because the spring perches were deeper and needed to take up more space. Both I trimmed the lip off the pad flush. I replaced all T-bolts with U-bolts. Also while you are doing the swap, if you haven't already. Change out the old jnuts for the front spring pocket. You can get them at Ace hardware, use the jnuts marked CIP. Or else you will here from others. Just some more info maybe more than you need but if anyone is doing a similar swap as I did, going from a mono to multi rear. The only other thing that I can think of that you need is the mounting bracket for the rear brake flex hose that mounts to the pumpkin. The old mono one will not work for you on the 12 bolt rear. Mono hard brakelines will work, just need to do some easy perssuation.
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