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Fox Street Suspension Build Advice

  • Thread starter Thread starter NYFox
  • Start date Start date Jan 25, 2026
N

NYFox

Member
Jan 19, 2026
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New York
Jan 25, 2026
#1
  • Jan 25, 2026
  • #1
I'm the new owner of a 90 Lx Notch with the 5.0 & 5spd. It's all original except for the 16" pony wheels. The car will be used for fun spirited... sorry, I meant to say reasonable driving with the Mrs. lol... I won't be auto Xing and don't need a corner carver.

Anyway, the goal is this, I would like to keep the comfort level in mind when replacing old deteriorating rubber bushings and upgrading other suspension parts.

I'm not looking to drop the car however, the Ford B springs are progressive with a spring rate of 425-530 lbs front and 200-300 lbs rear. I believe the factory spring rate is 400 lbs front and 185 rear. So, I'm thinking the B springs will add very little harshness over the stock springs and have minimal drop which I would be fine with. I would pair the springs with a quality single adjustable strut and shock. What do you guys think? Am I keeping the spring rate close enough to minimize the harshness while getting a small bump in handling. Thanks..
 
Reactions: 85GT4V

AeroCoupe

lube between the nut and the face. I know my lubes
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Oct 28, 2001
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Jan 25, 2026
#2
  • Jan 25, 2026
  • #2
just so you are informed the B springs will lower the car about an inch. Read further down in the URL below.

Ford Performance Mustang Front/Rear Lowering "B" Spring Kits (1979-2004)

These Ford Racing B Springs will lower your Mustang approximately 1 giving it a more aggressive stance and a lower center of gravity greatly improving your Mustang's handling over the stock springs.
www.steeda.com

I would go back with stock type bushings in the front control arms as well as the rear upper control arm mounts on the rear end. Moog makes good ones there. I would just replace the rear upper control arms with stock ones. Maximum Motorsports sells them as well as the tool to replace the bushings in the rear end. I would also run an after market rear lower control arm like the ones Maximum Motorsports makes.
 
Reactions: 86HO5.0, General karthief and 85GT4V

gkomo

now i can hopefully expect to receive the shaft
Aug 2, 2024
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Jan 28, 2026
#3
  • Jan 28, 2026
  • #3
For your intended use case i would just go with rubber bushings where applicable. Probably don't need polyurethane or anything like that.

New shocks/struts all around and maybe even new quad shocks as well. If you do lower it at least spring for some that can handle lowered cars and potentially a higher spring rate.
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
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#4
  • Jan 28, 2026
  • #4
Use OEM replacement shocks. Sport shocks will ride 'rougher'.
 
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