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02-08-2017, 04:14 AM | #1 |
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Join Date: Nov 2016
Location: Purcell Oklahoma
Posts: 11
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Shortening leaf springs
Ok so I'm attempting to place a 1967 c10 short stepside onto a 1999 silverado frame. The only thing that seams to be a problem is the leaf springs interfering with the step on the bed. Right now the front leaf spring mount goes seven inches into the stepside so somehow I need to move it back seven inches to clear that. I have no idea the best way to get around this problem.
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02-08-2017, 05:55 AM | #2 |
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Join Date: Feb 2017
Location: Guntersville, Alabama
Posts: 7
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Re: Shortening leaf springs
Seven inches is quite a lot. I think your best bet may be to find a spring shop and have them either modify your spring or maybe make you a new spring.
If you have them make you a new "Main Leaf" then maybe you can build the spring back up using the remaining springs in your existing spring pack. Springs are not at all hard to cut with a shop saw, but the arch will be wrong I think. Is there any way you can fabricate a new front spring hanger?
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02-08-2017, 10:43 AM | #3 |
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Join Date: Nov 2016
Location: Purcell Oklahoma
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Re: Shortening leaf springs
Yeah I believe I could fabricate a new front spring hanger. If there's anyway I could shorten them myself then I would like to at least try that but if that's not an option then I could find a spring shop.
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02-08-2017, 10:59 AM | #4 |
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Location: Bigfork, Montana
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Re: Shortening leaf springs
leaf springs need to be equal (or close to it) so if you take 7" off of the front you need to take 7" off of the back also. Going to make a really short leaf. Post pics, where is the interference? Can you move the hanger down? (or fab one like Hombre321 said) For ride height you can de-arch the springs/remove leafs or possibly flip the axle.
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02-08-2017, 11:08 AM | #5 |
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Join Date: Nov 2016
Location: Albuquerque, NM
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Re: Shortening leaf springs
There's nothing wrong with an asymmetric leaf spring - Chrysler used them, successfully, for decades. You'll end up with the front "half" of the spring significantly stiffer than the rear, which Chrysler used to combat wheel hop in their high-performance models (recall the famous Super Stock springs). That being said, you'll definitely want to look into what your final spring rate will be - it will be substantially stiffer overall.
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02-08-2017, 07:54 PM | #6 |
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Join Date: Feb 2017
Location: Guntersville, Alabama
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Re: Shortening leaf springs
After reading coreyjhen's post it got me to thinking. That is almost always a bad thing but I did it anyway.
I come from the Hot Rodding World, mostly build Model A's, there and the building of those Hot Rod type cars you always have to think outside the box. I mean I almost always use and early Hemi in most of my builds, I even am probably going to use a 392 Hemi in my 1968 Chevy truck, think outside the box! Now coreyjhen's statement about a asymmetric type spring just may your best bet. I know that time and money have to figure into your project, and this would certainly be less expensive and quick as well. You will have a different spring rate on one side of the spring, the shorter side will be stiffer. We do however live in the real world and while I don't know this for a fact but I bet you would never even notice that difference in the seat of the pants way. Leaf springs have been around a very long time, I mean the Romans used them. Probably there has not been much that hasn't been tried once or twice. There was a long time ago a spring configuration that was very popular. It was the "Quarter Elliptical Spring" at some time they fell out of favor. Today in Hot Rods they are making a real comeback because of space restraints. here are a couple of pictures of some of them. I show them not as an idea for your truck, but to show that thinking outside the box sometimes is good.
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02-08-2017, 11:24 PM | #7 |
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Join Date: Nov 2016
Location: Purcell Oklahoma
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Re: Shortening leaf springs
So this is from the center of the axle to the front spring hanger.
So right now the front spring mount is directly in the center of the step. So it needs to be no longer than 2 feet. So more than 7 inches need to be shortened more like 11-12 inches. |
02-08-2017, 11:35 PM | #8 |
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Location: Purcell Oklahoma
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Re: Shortening leaf springs
This is my first build so cheaper and easier is what I'm going for. If it would work with just cutting a chunk of the leaf spring from the front portion and moving the front hanger closer to the axle then wielding the leaf back together then that sounds very simple something I could do.
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02-09-2017, 01:08 AM | #9 |
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Join Date: Feb 2017
Location: Guntersville, Alabama
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Re: Shortening leaf springs
Well your pictures tell and interesting story. Particularly the last picture. On the far left side of that picture I believe the tire or just the edge of it is showing, is that right? If that is what it appears to be I am afraid you are not going to able to just cut the spring and move the hanger back.
The reason is the front side of the spring is just going to be way to short and create problems with the geometery. Even looking at that picture you are talking about a very short spring even if you have one made and keep it symmetrical. There are other ways to go about this but all of them will require quite a bit if fabrication and cost. There surely is a simple solution, but I cannot see it. Like I said I am new to these old trucks. I am sure that some of these guys here on this board have dealt with something like this and will chime in. If you do decide to step outside the box there are ways to do that. Coil overs, air bags. All of those will require some kind of way to position the rear end like a four bar. Not hard or complicated but different. Not saying that is the only way but it is one way. Lets see what the more informed truck guys say...
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Protected people will "Never" be able to understand the intensity life "CAN" be lived at. To do that you must completely and totally understand the meaning of the word DUCK. |
02-09-2017, 01:15 AM | #10 |
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Join Date: Apr 2016
Location: Portland, Or
Posts: 387
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Re: Shortening leaf springs
Here's an idea. Take the rear springs from a 67 and adapt them to the 99 frame. You won't be recreating the wheel this way, and the length should be okay. You may be able to reuse the 99 spring hangers, by just moving them. Or reuse the 67 hangers. Take dimensions from the doner truck so you know where the spring hangers should be placed. You could use 67 to probably 87 half ton springs. It would be worth investigating...
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02-09-2017, 10:56 AM | #11 |
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Join Date: May 2013
Location: Vero Beach FL
Posts: 293
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Re: Shortening leaf springs
There are all kinds of different length springs available. Just research the length, arch and width you need. I am changing my 56 Chevy 2dr into a gasser using a 52 truck front axle. The cost of rearching the front springs was expensive. I am using cj5 springs with a 4" lift. They are the right length, width, and 1/2 the price.
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02-09-2017, 11:00 AM | #12 |
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Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 1,137
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Re: Shortening leaf springs
The issue is the 99 frame is wider than the 67 so there is no room to fit the hangers between the step & the frame. One possibility is to mount the springs under the frame rails. You could move them inside the rails but you want them as far to the outside as possible & inside the rails you now have issues with fuel tank, exhaust, etc.
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02-09-2017, 12:05 PM | #13 |
Hittin E-Z Street on Mud Tires
Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Shortening leaf springs
Swap the step for a fleet bed and problem solved
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02-09-2017, 12:50 PM | #14 |
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Join Date: Aug 2004
Location: Sacramento Ca
Posts: 126
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Re: Shortening leaf springs
In board your springs.
Cut this hanger off. Cut the rivets heads off and hammer them out. mount new hanger on the inside of the frame rail. If that won't work, mount them under the frame. Or get some hangers that can be French cut into the frame. see link below leaf spring hangers link Here's another in board kit link Last edited by binford; 02-09-2017 at 12:57 PM. |
02-10-2017, 04:47 PM | #15 |
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Join Date: Feb 2016
Location: Portland Oregon
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Re: Shortening leaf springs
It maybe easier to switch to coil springs.
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
02-11-2017, 03:14 AM | #16 | |
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Join Date: Nov 2016
Location: Purcell Oklahoma
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Re: Shortening leaf springs
Quote:
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02-11-2017, 10:16 AM | #17 |
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Join Date: Dec 2012
Location: Los Banos CA
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Re: Shortening leaf springs
fleet side bed maybe???
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frame, leaf springs, stepside |
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