Quote:
Originally Posted by socalwrench
Alright. After several weeks searching and trying to sort through a ton of internet information- I decided that I needed REAL information regarding springs for the S197 Mustang GT.
Basically, I want to gather ALL the REPUTABLE SPRING RATES and LOWERING HEIGHTS on this thread. This way I, and many others, can make an informed decision. It is my understanding that the FR500 springs use a modified design and wouldn't apply to the typical street car- such as a full coilover setup. This thread excludes full bodied coilovers.
BTW- please do not post anything with "should" or "maybe", as we are all looking for correct information. Honestly, you either know the information or you don't- there's nothing wrong with learning.
As of July 2009:
Name- (part number)- lowering amount- spring rates
Stock/Factory GT springs (Tags= Yellow, Orange) - front: 136lb/in rear: 142lb/in
Eibach Pro-kit (pn 35101.140) / Ford Racing (K-springs) (pn M-5300-K) 1.5/1.7 -
Eibach Sportline (pn 4.10135) 1.6/2.0 -
Steeda Ultra-lite (pn 555-8206) 1.25/1.5 front: 195lb/in rear: 175lb/in
Steeda Sport (pn 555-8216) 1.0/1.25 - front: 200lb/in rear: 175lb/in
Steeda Competition (pn 555-8241) 1.0/1.25 - front: 225lb/in rear: 185lb/in
H&R Sport (pn 51655) 1.0/.75 -
H&R Super Sport (pn 51655-77) 1.7/1.9 -
H&R Race (pn 51655-88) 1.5/1.4 -
Roush Performance {sold in pairs} (pn 401294 and 401295) 1.0/1.0 -
Roush Extreme (pn 402331) 1.0/1.25 -
Tein H-tech (pn SKG12-BUB00) 0.94/1.65 - front: 163lb/in rear: 163lb/in
Tein S-tech (pn SKG12-AUB00) 1.5/2.24 - front: 174lb/in rear: 174lb/in
Vogtland (pn 950084) 1.3/1.3 - variable front: 160-240lb/in variable rear: 120-220lb/in
Saleen/Racecraft (pn 10-1302-B12999) 1.25/1.25 -
Sprint (pn 2115) 1.6/1.5 -
BMR Fabrication Inc. (pn SP009) 1.25/1.5 -
I am currently filling in any information above, but feel free to help out.
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Our front springs are 160 the rears 140