What lowering springs to get?
Roll your eyes all you want, but cut springs are no different than lowering springs if you upgrade all the other stuff (just like you should with any lowering spring setup) and take a few extra measures to regain suspension travel that you've lost.
A spring is designed for a drop. They are just a shorter spring, there isn't any more magic that goes on than that, and then they hike the spring rates up to compensate for the extra drop so you don't bottom out. More rate = more stiff ride. Cut stock springs + UMM to regain lost suspension travel = stock length travel and ride and the benefit of a lower stance without the stiffer ride of higher spring rates.
By doing that you keep stock travel and stock rates, so the ride is very compliant just like stock (not stiffer like lowering spring setups), and by gaining back the suspension travel you lost you don't have to worry about bottoming it out.
For example if stock suspension travel is 6" then...
Stiff lowering springs means less travel, probably down at least the amount of the drop, so you're now at 4-4.5" of suspension travel and need more rate to avoid bottoming out.
Cut springs mean less travel, but with a few extra modifications you can get back the lost suspension travel and be back around 6", so you're back to where you started, just with a better stance. That's where I'm at. Then I added upgraded shocks and a few other small things for better handling. But just cutting stock springs and nothing else, yes, it's not going to ride very well.
This isn't rocket science people.
Now on the spring setup stuff, see below...
Okay, let's go about this another way chaman and cobrahunter...
Oh suspension engineering gurus
Question is how much coil did you cut to get your stance?
Nevermind I found it on your site.
Last edited by gm02ceta; Dec 23, 2009 at 06:17 PM.
Now on the spring setup stuff, see below...
Okay, let's go about this another way chaman and cobrahunter...
Oh suspension engineering gurus
This has been discussed to death but of course if you think you know more about suspension than the engineers who build them be my guest. You are offering your experience as a FACT when the fact is that this practice has proven to be unsafe and provides usually a bad ride quality.
To the OP please....continue your research but do not attempt to cut your springs. You would think ride will be the same but you will notice after a while that you will destroy your shocks and will end up spending more fixing things up to get it right.
But anyways I know how good my car handles and look so OP, its your car...do as you please.
Do you think that aftermarket springs are 100% the same all the time? Have you ever heard of "production tolerances?" Do you think if one spring is 499 lbs and one is 501 lbs it will completely ruin the ride and handling?
In what way will it increase the stress on them? How exactly?
Do lowering springs not put increased stress on shocks? If the shocks are upgraded to handle the spring rates and suspension travel shouldn't it not matter what springs are involved if everything else is built around them?
Please explain "load" and "preload" in springs. I am aware of spring rates. Load and preload are terms related to shocks. I wasn't aware of load and preload in springs, at least not in the technical sense (in case you're using your own words and not technical terms).
Why lower a car and gain handling only to give up ride quality with a stiffer ride? That doesn't make sense to me. I chose to lower the car for a better stance and to keep ride quality. Some people have different priorities. It doesn't make one or the other wrong.
But for the OP, I think something along the line of the Vogtlant or Hotchkis springs is where it's at, with SLP/Bilstein or KYB GR2 shocks. Adjustability doesn't = the best shocks if you have to have them dialed up a ton and super stiff just to properly dampen the higher spring rates

You know what....lets drop this ****. You started all this crap when you came bragging saying that your cut springs were better than my setup...that your stance was better than mine...I mean what the hell is wrong with you kid? Feel you have something to prove to me?? OP asked for opinions on different setups I gave mine....simple. If you feel cutting springs is better than aftermarket engineered ones....go ahead, but you are in a minority on this one, bud.
I dont have anything to prove nor I feel the need to start a flame war. Im very happy with my car and a lot of people give me props for it, even was praised by editors of GMHTP mag and published recently. They used pics taken from me also, so that made me proud too since photography is also a hobby of mine. Find someone else to flame kid.
OP, Im sorry for all this crap. Hope you get a nice suspension setup and remember to post pics!
Last edited by chaman; Dec 23, 2009 at 10:05 PM.
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You know what....lets drop this ****. You started all this crap when you came bragging saying that your cut springs were better than my setup...that your stance was better than mine...I mean what the hell is wrong with you kid? Feel you have something to prove to me?? OP asked for opinions on different setups I gave mine....simple. If you feel cutting springs is better than aftermarket engineered ones....go ahead, but you are in a minority on this one, bud.
I dont have anything to prove nor I feel the need to start a flame war. Im very happy with my car and a lot of people give me props for it, even was praised by editors of GMHTP mag and published recently. They used pics taken from me also, so that made me proud too since photography is also a hobby of mine. Find someone else to flame kid.
OP, Im sorry for all this crap. Hope you get a nice suspension setup and remember to post pics!
I'm not trying to start a flame war. You're the one talking so-called-facts that are simply incorrect, and not coming from any personal experience whatsoever obviously (because if you had personal experience with a proper suspension that had cut springs, you wouldn't be saying the things you are, it's just like somebody throwing on BMR springs on stock shocks and saying the ride sucks and BMR springs suck, when in actuality you know it's not the springs, it's the setup, same exact thing with my cut spring setup).
I'm simply trying to correct the misinformation you've posted. I wasn't in here to start a flame war, just clear up things a bit from a first-hand experience standpoint. Don't take it personally. I have no problem with you or your car. I like your car, and I enjoy your photography quite a bit. It's not 100% the way I'd do it, but it's definitely one of the better looking 'birds on the site IMO, and if we all had the same taste things would be boring. It's a really nice car though and it's obvious the work you've put into it and how proud of it you are and for that I give you props.
I do realize I'm in the minority though, and I used to be in the majority in thinking that cut spring setups instantly = garbage. My mind got changed immediately after riding in a properly set up car with cut springs. I had to eat crow, which I did. Which brings me to the fact that I have nothing to prove, but I feel that it's important to tell it like it is. Cut spring setups with the right measures taken for them to ride well are actually really nice. Granted all the lowering spring setups I've had before were more responsive in handling, but I never liked the ride quality. Since my SS is a daily driver I chose ride quality over handling. If my SS ever goes to weekend duty I'll pull this setup and put something stiffer in for better handling.
But also keep in mind I wasn't the one who started in on you. You started bashing cut spring setups with no facts and/or personal experience to back it up, which is when I stepped in. Quoted below in post order to back that up.
Valid recommendation, especially based on what the OP asked for.
The sarcasm is obvious here. You were the first one to start with this.

But for the OP, I think something along the line of the Vogtlant or Hotchkis springs is where it's at, with SLP/Bilstein or KYB GR2 shocks. Adjustability doesn't = the best shocks if you have to have them dialed up a ton and super stiff just to properly dampen the higher spring rates you have.
After that, you continued with the bashing and misinformation and I only continued to back up what I was saying with facts and experience. I don't know how it could be any more clear-cut than that. I wasn't the one flaming anybody. You were the one flying off the handle. I was simply calling you out on what you were saying and trying to correct it so the OP could make an educated choice on what he wanted to do with his suspension.
Last edited by josh99ta; Dec 24, 2009 at 06:44 AM.
My car has the stock factory springs and shocks and I do like the ride quality but would be happier if it sat just a bit lower. I've had lowered f-bodies before and although they have a nice lowered stance. It gets old having to constantly be aware of scraping the undercarriage and front bumper by traveling over speed bumps, dips and high angle driveways.
I bought a used set of slp/bilsteins springs and Bilsteins hd shocks and struts in hopes for a slightly firmer ride quality over the factory ones but if I'm not happy with that set-up I'll give josh99ta's set-up a try 1st. before I buy new springs.

My car has the stock factory springs and shocks and I do like the ride quality but would be happier if it sat just a bit lower. I've had lowered f-bodies before and although they have a nice lowered stance. It gets old having to constantly be aware of scraping the undercarriage and front bumper by traveling over speed bumps, dips and high angle driveways.
I bought a used set of slp/bilsteins springs and Bilsteins hd shocks and struts in hopes for a slightly firmer ride quality over the factory ones but if I'm not happy with that set-up I'll give josh99ta's set-up a try 1st. before I buy new springs.
To the OP take a look at this article. It explains quite well the pro and cons of suspension mods, including cutting springs...
http://craig.backfire.ca/pages/autos/cutting-springs
And about experience, no Ive never spend $8,000 in suspension mods nor I'm planning to do so but I know a lot of folks who have done this and their suspension was fried in 6 months or less. That is enough for me. You don't need to jump off a cliff to know what the consequences are. Ive seen it happen its garbage....the rest of trustful sources regarding suspension confirms this. I don't need an internet unknown and his fans claiming a LOT of "experience" to tell me otherwise. I prefer to follow trustful, known sources to base my decisions. If some seem to be impressed by a well put argument...well, a well put argument does not guarantees it to be true. I leave the OP with that and hope you make a right decision.
To the OP take a look at this article. It explains quite well the pro and cons of suspension mods, including cutting springs...
http://craig.backfire.ca/pages/autos/cutting-springs
And about experience, no Ive never spend $8,000 in suspension mods nor I'm planning to do so but I know a lot of folks who have done this and their suspension was fried in 6 months or less. That is enough for me. You don't need to jump off a cliff to know what the consequences are. Ive seen it happen its garbage....the rest of trustful sources regarding suspension confirms this. I don't need an internet unknown and his fans claiming a LOT of "experience" to tell me otherwise. I prefer to follow trustful, known sources to base my decisions. If some seem to be impressed by a well put argument...well, a well put argument does not guarantees it to be true. I leave the OP with that and hope you make a right decision.

As for Craig and his article, his argument is no different than my own. When you lower a car you lose suspension travel. Therefore rate needs to go up (or constant as he calls it) in order to compensate so that you don't bottom out the shocks or other things. When you cut springs you lose travel, but rate doesn't go up much (in our car's cases the rear springs actually rate up pretty well though when cut, approximately 130 lbs with one coil out, 150 lbs with two coils out, what was the rate on your rear springs again chaman?
). So now you're left with poor results with cut springs. But if you upgrade shocks, which is a necessity on any lowered car IMO, and if you modify the shock mount so that it allows more suspension travel (the UMM mod if you search for it will gain you back the lost suspension travel, and that's all you need because you won't ever fully compress the spring), then you're back to where you started. Stock suspension travel is 6". Lowering springs lessen your suspension travel by as much as 2", so you need more rate or constant to keep from bottoming out since you only have 4" of travel now, which means a stiffer ride.
With cut springs and the UMM mod my suspension travel is roughly 5.5" so I still lose a little, but I am pretty low, my rates are up a little, I have better shocks, and I've upgraded bumpstops for better handling and ride too, so bone stock compared to my setup is about equal in terms of usable suspension range.
And it's all easy to do. Anybody could do it. It just adds a few more steps into the spring swap procedure (hacksaw the shock mounts for more travel, swap the bumpstops out on reassembly when you're putting better shocks on). For a more compliant ride those few extra steps are worth it to me.
I don't necessarily disagree with anything he says in his article though, and he even admits that cut springs will work well in some setups, and it just so happens that F-Bodies are a platform that actually does work well with cut springs. I'm sure there are TONS of platforms that it won't work well on, you can cut too much or cut by using heat in a F-Body application and get poor results, you can skip shocks and get poor results. But if you do it right, just like when you use any lowering spring other things should be upgraded too, you will get good results (if a compliant ride, better stance, and a slight bump in handling are the results you're after).
Are cut springs a bad idea on some cars? Yes.
Are cut springs a bad idea when other factors aren't taken into consideration and a suspension isn't upgraded around them? Yes.
Are cut springs still a bad idea on some cars? Absolutely. Even at that point you may not be able to find a way to regain travel lost, and with lower spring rates something has to give. But not on F-Bodies. There is a way to regain lost suspension travel. There are enough tolerances and clearance around the front suspension that there would be no a-arm to body contact as Craig's diagram suggested or any other kind of contact. The spring retainers are deep and work properly. The assembly bolts together tightly so the spring isn't going to pop out while driving. The only drawback to cut springs in the F-Body platform, when properly implemented, is that the tire can rub on the fender liner at when really compressed. The only time I experience this is when I'm at full lock and hit a dip going into a parking lot of something. I can hear it scrub a little. I also had the same problem with more than one suspension setup aside from this one. It doesn't hurt the tire, fender, or anything else (although will eventually rub a hole in the liner over a long period of time, but some people run around with no liners in, doesn't hurt anything). And since if you're cutting springs you probably won't be at full lock at higher speeds aggressively throwing the car through turns, it's a non-issue at speed.
I don't think going out and cutting springs on everything you can get your hands on is the right thing to do. I don't think it'll even work on some cars, because clearances just aren't there. But on these cars it works if you do it right and set it up right. Plain and simple.



IMO...talking to the Strano guy is always the same....Koni and Strano springs. I swear that more the 95% of the times when people ask the guy the same formula comes up. Im not bashing in any way the guy so please.....this is my opinion, nothing more.
maybe Sam recommends the Strano/Koni setup most of the time because IT IS THE BEST. with the adjustability it can be dialed in to suit almost anybodys desires. when people say they can't afford it, he recommends other things but cost aside the Strano/Koni setup IS THE BEST. if someone is setting up a drag car he often recommends something else. F bodies are all alike and most people have the same desires for their street cars. Lower, better handling, good ride. Of course the first choice will be Strano/Koni.








