North American Turbocoupe Organization



Q: lowering springs ?
goldwing Offline
Senior Member
#1
Hello,
I've been told that when lowering the Tbird I'm to use Mustang lowering springs.
I'm wondering what year Mustang springs to buy.
I know the old Fox body Mustangs are lighter in weight than the later Mustangs. What is the weight of the Tbird?

Also, my memory makes me think the later model Mustangs sit higher from the factory than the earlier Fox body cars.
Should I buy the 99-04 GT spring because it seems like the height is about the same? I want to be sure I lower it atleast 1.5 inches.
Thanks

P.S
I'm sure this has been discussd before. Why doesn't NATO archive these topics?
Thanks again
T.C:87 5 speed
HOLSET(HE341/HY35W type-D),255 Walbro, No intercooler yet,8lbs boost,Timing @ 9,Low& C.C Plates & SN-95 Bumpsteer Kit, KYB-AGX Struts,Belt driven fan,Custom oil cooler feed,Relocated ECT,Relocated TFI,N/A Hood, showing 178K
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5.0TurboCoupe1988 Offline
Posting Freak
#2
i have been told to use stock sn-95 springs, not lowering springs. i have a set. PM me if you're interested.
1988 TC 2.3/5-Speed, 148K
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goldwing Offline
Senior Member
#3
I'll keep you in mind.
I just want to do some research first before I make a decision.
I want something thats alot stiffer than the stock T.C springs. Does anyone happen to know the Tbirds spring rating?
Thanks
T.C:87 5 speed
HOLSET(HE341/HY35W type-D),255 Walbro, No intercooler yet,8lbs boost,Timing @ 9,Low& C.C Plates & SN-95 Bumpsteer Kit, KYB-AGX Struts,Belt driven fan,Custom oil cooler feed,Relocated ECT,Relocated TFI,N/A Hood, showing 178K
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RDOG Offline
Posting Freak
#4
An easy cost effective way to go, is pick up the SN95's and the adjustable lower control arms from che performance. The fronts will work fine, but the rear will squat down. The adjustable units for the rear will allow you to fix the squat.
http://www.cheperformance.com/cartgenie/...sp?scat=30
1986 Turbo Coupe. Boport StageIII head, Boport 2.1, Performance Techniques 50 trim hybird, StageII.63, stinger 3" exhaust, Phenolic spacer, Boglog header,NPR FMIC intercooler setup, kirban fpr, bigrmotorsports fuel rail, diablo water meth kit, CAI, remote mount TFI, CHE rear adj control arms, MAC girdle, 8.8 rear disc, aluminum drive shaft, H&R lowerings springs Tbird Turbo Specific, y MAS!!
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vinnietbird Offline
Senior Member
#5
I put SN-95 springs in my Spo.........I mean Thunderbird....and it brought it down about an inch and a half or so all the way around.
1988 Thunderbird. No details will be given or spoken of.
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Not B Anymore Offline
Administrator
#6
Aren't the SN-95 springs softer than the TC springs though?
Brian Leavitt
'86 TC 5-Speed -- MS2x w/COP | 83 lb. injectors | T3/T4 50 Trim Stage 3 .63AR | Full 3" Exhaust - No Cat | Motorsport FMIC | Ranger Roller | Ported E6 | Walbro 255HP | Kirban | 20psi | 120-amp 3G | 8.8" 3.55 rear | '03 Cobra Wheels
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RDOG Offline
Posting Freak
#7
Quote:Originally posted by B:
Aren't the SN-95 springs softer than the TC springs though?
Yes, thats why it really dumps the car. P_roblem is it dumps the car a lot in the back. If you guys do a search you will see the issues that past guys have had.
1986 Turbo Coupe. Boport StageIII head, Boport 2.1, Performance Techniques 50 trim hybird, StageII.63, stinger 3" exhaust, Phenolic spacer, Boglog header,NPR FMIC intercooler setup, kirban fpr, bigrmotorsports fuel rail, diablo water meth kit, CAI, remote mount TFI, CHE rear adj control arms, MAC girdle, 8.8 rear disc, aluminum drive shaft, H&R lowerings springs Tbird Turbo Specific, y MAS!!
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goldwing Offline
Senior Member
#8
Hey guys,
I did some searching and found this place. Someone here has purchased a set of these springs before so I just requested a quote.
These guys look pretty awesome.
Take a look.
http://coilsprings.com/request_quote.aspx
T.C:87 5 speed
HOLSET(HE341/HY35W type-D),255 Walbro, No intercooler yet,8lbs boost,Timing @ 9,Low& C.C Plates & SN-95 Bumpsteer Kit, KYB-AGX Struts,Belt driven fan,Custom oil cooler feed,Relocated ECT,Relocated TFI,N/A Hood, showing 178K
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goldwing Offline
Senior Member
#9
Ok guys, I got my quote from coil spring specialist today. The price for a set of 2 fronts at 30% stiffer rate and 1" drop is $206.
The rear set of 2, also at %30 increased rate and 1" drop $199. Grand total $405

I'm thinking this is the best way to go. If the Mustang GT springs provide a stock ride/feel..., then I want something stiffer.
I just need to know what the T.Cs stock spring rate is. I'm not sure exactly what %30 increased rate is. I'm just bumping my rate up %10 more than the other guy (Matt S) has.
Source info:
http://natomessageboard.com/cgi-bin/ulti...1;t=021457
T.C:87 5 speed
HOLSET(HE341/HY35W type-D),255 Walbro, No intercooler yet,8lbs boost,Timing @ 9,Low& C.C Plates & SN-95 Bumpsteer Kit, KYB-AGX Struts,Belt driven fan,Custom oil cooler feed,Relocated ECT,Relocated TFI,N/A Hood, showing 178K
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1988turbotbird Offline
Senior Member
#10
So would eibach be good to go with? Probaby best to go with a new set for a sn-95, a used set may be a little saggy/worn
88 TC/HX35/CAI/3" exhaust/Wilson MS2/Beanman header/Head Work/Laramee Cam/Gillis boost controller/3G alt/Walboro 255 fuel pump/BOV/CHE rear control arms/1" lowered/poly. bushings/Chuck W mounts/6 puck clutch/Pro 5.0 shifter/AEM wideband/Tuning MS..
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