Fox T-Bird/Cougar Forums

General => Archive & Library (Read Only) => Topic started by: Cougar5.0 on September 20, 2007, 06:26:49 PM

Title: Spring rates & drop - FYI
Post by: Cougar5.0 on September 20, 2007, 06:26:49 PM
I stole this from somewhere - the front springs information should be applicable to our cars since '94-'04 are similar weight. The rear spring info is for informational purposes only as they are too short for our heavy rear cars!

(http://i43.photobucket.com/albums/e360/Domeskull/springrates.jpg)
Title: Spring rates & drop - FYI
Post by: MasterBlaster on September 23, 2007, 02:25:54 PM
Quote
'94-'04 are similar weight.
If only it was that easy.
The chart doesn't mention the springs' heights (installed or not).
Eg: Putting in a 500lb 18" won't lower a car that originally had a 500lb 15" installed.
Title: Spring rates & drop - FYI
Post by: gumby on September 23, 2007, 03:50:42 PM
nice table. all the spring rate numbers i know off the top of my head look right, but i still wonder what sources they used to compile the info.

AFAIK the KB rates werent published anyplace, and i never heard them give an answer when asked outright. the front drop wasnt 2" either, more like 1.5"
Title: Spring rates & drop - FYI
Post by: Cougar5.0 on September 23, 2007, 04:36:42 PM
Quote from: MasterBlaster;178036
If only it was that easy.
The chart doesn't mention the springs' heights (installed or not).
Eg: Putting in a 500lb 18" won't lower a car that originally had a 500lb 15" installed.


I should have mentioned that these would be V8 to V8 and reported drops on a SN95 Mustang. Drops may be similar on Fox V8 vehicles based on extensive research here and on CoolCats. I'll be reporting back on the Mach1 springs when I get them this Friday.
Title: Spring rates & drop - FYI
Post by: JeremyB on September 23, 2007, 04:52:34 PM
I don't know what rates came stock, but replacement Moog shocks are 249 lbs/in. Cargo coils are 340 lbs/in.

Stock wheel rates are about 20% stiffer in the rear.
Title: Spring rates & drop - FYI
Post by: Cougar5.0 on September 23, 2007, 05:02:44 PM
Quote from: JeremyB;178074
I don't know what rates came stock, but replacement Moog shocks are 249 lbs/in. Cargo coils are 340 lbs/in.

Stock wheel rates are about 20% stiffer in the rear.


I said I was talking about front only - the rears are for informational purposes only!

I thought everyone understood that the Mustang rears are too short and bind up early.
Title: Spring rates & drop - FYI
Post by: JeremyB on September 23, 2007, 09:19:38 PM
Aye, I missed that part. I thought that would be in the title.
Title: Spring rates & drop - FYI
Post by: Cougar5.0 on September 24, 2007, 02:32:56 PM
Quote from: JeremyB;178154
Aye, I missed that part. I thought that would be in the title.


That's OK - I'm used to people yelling at me without having even read the entire post - lol :hick:

BTW, I have an Excel spreadsheet that I made that picture from and I will be updating it as I receive more information. Your photochop is appreciated but will be superceded in the future. Also, I edited the O/P to make it clear that the rears are for informational purposes only. I won't be removing the rears info as some folks like me who are using adjustable rear lower control arms may still want to experiment with the shorter springs (i.e. - I can't get the fenders closer than 3.5" from the tops of the tires now!)
Title: Spring rates & drop - FYI
Post by: JeremyB on September 24, 2007, 02:59:34 PM
Quote from: Cougar5.0;178309
That's OK - I'm used to people yelling at me without having even read the entire post - lol :hick:

Yeah, that's what I get when I try to apply presentation standards from work to internet forums. :(

Graphics normally convey the main point of a slide (or post in this case), the text is complimentary. I still should have caught it. I'm turning to the person I made fun of when I started working.
Title: Spring rates & drop - FYI
Post by: Chuck W on September 24, 2007, 03:15:10 PM
The "real" info that chart is also missing (aside from the heights) is load ratings. 

It is a good listing though.
Title: Spring rates & drop - FYI
Post by: Cougar5.0 on September 24, 2007, 07:49:59 PM
Quote from: Chuck W;178315
The "real" info that chart is also missing (aside from the heights) is load ratings. 

It is a good listing though.


Yep, true - I was planning on adding columns for that later though at this point I am only aware of a few of the ratings - if you know of a place to find this info, let me know. Once again, the fronts are mostly similar so there is definite useful info there either way. The rears are another story.
Title: Spring rates & drop - FYI
Post by: Sduneman3 on September 27, 2007, 05:35:04 PM
Here are 2 sites I found about SN95 Springs, and one on Swaybars

http://www.stangsuspension.com/store/springratesarticle.asp

http://www.miracerros.com/mustang/sway2.htm

http://www.miracerros.com/mustang/springs_calcs.htm
Title: Spring rates & drop - FYI
Post by: 88TurboCoupeman01 on August 23, 2008, 08:07:51 PM
Can I run Fox body Mustang Coil Overs in my TC.
Title: Spring rates & drop - FYI
Post by: fordguy545 on November 16, 2008, 01:47:20 AM
so, what exactly do you do for rear springs then.  I'm thinking of getting some stiffer springs for autox, and almost bought the motorsport c springs till I found this
Title: Spring rates & drop - FYI
Post by: vinnietbird on November 16, 2008, 10:58:13 AM
I'm following Kingcars lead and will hopefully be installing my front springs this week....or next week at the latest....I hope. I really am tired of the 4x4 look up front. For the fun of it,I'll measure the distance between the tire and fender.I think it's about 2 feet.LOL.
Title: Spring rates & drop - FYI
Post by: 1BadBird on October 22, 2009, 08:01:30 PM
I have sn-95 coil-overs/tublar lower control arms on the front. It looks like it droped about an inch, maybe a tad more. Don't know for sure as I didn't do a before or after measurement.
Title: Spring rates & drop - FYI
Post by: vinnietbird on October 22, 2009, 08:44:20 PM
With my SN-95 springs front and rear,I got about a two inch drop.
Title: Spring rates & drop - FYI
Post by: Eliminator on July 25, 2010, 10:15:10 PM
didnt Eric from CC.net say that T/C front springs can lower a V8 car and have a rate like 450 or so?