• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Upper and Lower Control arms a good Investment???

  • Thread starter Thread starter Kdubslugga
  • Start date Start date Jul 30, 2005

Kdubslugga

Active Member
Jun 7, 2003
1,515
3
38
Akron, OH
Jul 30, 2005
#1
  • Jul 30, 2005
  • #1
I dont understand how new upper and lower control arms help your launches. I mean i know thats why they make them, but from what i understand aftermarket arms are stiffer than stock. Now i thought weight transfer to the rear was helpful?? I just need help understanding how they help lauches. Im thinking about getting some for this winter along with a 3000 stall to get killer launches, they worth the money???
 

Saleen8786

New Member
Oct 7, 2003
209
0
0
Marlton, NJ
Jul 30, 2005
#2
  • Jul 30, 2005
  • #2
They stop body twist,increase handling,plant tires more firmly,control the axles location without binding,reduces wheelhop, and they put more of your power to the ground stronger. I got factory 5(southside) upper and lowers on mine and i love em, hope my input helps ya
 

maverick0716

Founding Member
Jan 12, 2002
3,924
0
56
Chilliwack, BC, Canada
Jul 30, 2005
#3
  • Jul 30, 2005
  • #3
Actually the stock arms themselves are really thin metal and have no strength to them at all....notice how they're in a "U" shape. Most aftermarket control arms use thicker metal, as well as a box shape....plus they use polyurethane bushings which are way stiffer than the stock rubber. To sum it up, aftermarket control arms allow the rear end to stay planted on the ground.....with stock ones, they can flex and one side of the diff can actually not be planted on the ground under launches or hard acceleration.
 

90mustangGT

I felt sorry for girls because
Founding Member
Jan 15, 2002
2,773
17
89
Dallas, GA
Jul 30, 2005
#4
  • Jul 30, 2005
  • #4
Get a set and you will understand.
 
S

SmockDoiley

New Member
Jun 14, 2003
1,591
2
0
San Diego, CA
Jul 30, 2005
#5
  • Jul 30, 2005
  • #5
I personally think aftermarket u/l's that have the same design as factory ones, SUCK!!! They dont help crap. They might help if you have a slightly modded engine, but they are worthless with a stroker or blower motor. For real traction get some good stuff thats actually redesigned and moves the mounting points around for better rearend geometry. Although the aftermarket stuff is much stiffer, the design of the mustang rearend sucks for traction and all they do is copy that but make it stiffer.
 

stang8urimport

Autozone Junkie
Founding Member
Jun 21, 2002
1,499
12
59
Daytona Beach, FL
Jul 30, 2005
#6
  • Jul 30, 2005
  • #6
Lowers are good.. But I completely trust Maximum Motorsports in saying upper with poly bushing will cause a binding in the rear end. Stick with the FMS uppers or stock uppers... any (or most) aftermarket lowers will help a whole bunch.
 

89CopCoupe

Banned
Feb 17, 2004
606
0
0
Post Count City
Jul 31, 2005
#7
  • Jul 31, 2005
  • #7
For the uppers you want to retain the factory rubber bushings on the diff side of the arm.
When you load the rear with power it wants to pitch forward.
The rubber bushings in the diff ears allow it to flex, where as a stiff bushing doesn't flex as much and increases the stress on the torque box which leads to it tearing with continued abuse.

Steeda aluminum non-adjustables for both upper and lower (3-piece bushings) ...
I took advice from Jamie on these forums and they are as good as he said they would be
Way better than your run of the mill $200 pairs ... not that the $200 sets are bad, but you get what you pay for
 

Modular2v

Founding Member
Jun 30, 2002
3,222
23
99
oklahoma
Jul 31, 2005
#8
  • Jul 31, 2005
  • #8
they took 3 tenths off of my 03 gt
 

Kdubslugga

Active Member
Jun 7, 2003
1,515
3
38
Akron, OH
Jul 31, 2005
#9
  • Jul 31, 2005
  • #9
Hey good stuff here guys, i learned some stuff!!
 
You must log in or register to reply here.

Similar threads

R
Suspension Lower control arms needed
  • racer_dave
  • Feb 9, 2026
  • 1974 - 1978 Mustang II Talk & Tech
Replies
3
Views
255
1974 - 1978 Mustang II Talk & Tech Feb 20, 2026
Noobz347
New Products From J&M Products - 1979-1998 & 1999-2004 Race/Extreme Duty Rear Lower Control Arms
  • J&M Products
  • Oct 9, 2025
  • Vendor Sponsor Forums
Replies
0
Views
299
Vendor Sponsor Forums Oct 9, 2025
J&M Products
Tightening upper control arm bushings at ride height dilemma… need some help
  • AnthonyA1234
  • Dec 27, 2024
  • Fox 5.0 Mustang Tech
  • 2 3
Replies
51
Views
5K
Fox 5.0 Mustang Tech Feb 27, 2025
General karthief
Engine Replacing upper/lower intake, anything else?
  • 91GTstroked
  • Nov 4, 2024
  • Fox 5.0 Mustang Tech
Replies
14
Views
886
Fox 5.0 Mustang Tech Nov 26, 2024
AeroCoupe
C
best rear control arms?
  • colehelm
  • Jun 25, 2024
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
34
Views
5K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 29, 2024
AeroCoupe
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?