• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

underide vs overide trac bars

  • Thread starter Thread starter BrownPSU78
  • Start date Start date Aug 3, 2005
B

BrownPSU78

Active Member
Sep 9, 2004
129
0
27
Aug 3, 2005
#1
  • Aug 3, 2005
  • #1
What is the differance between underide and overide traction bars. Also sohuld these be installed at the same time as new rear leafs or should i let the springs settle a bit before installing.
--Brown
 
B

BrownPSU78

Active Member
Sep 9, 2004
129
0
27
Aug 6, 2005
#2
  • Aug 6, 2005
  • #2
can someone please help me with this??
--Brown
 
B

BrownPSU78

Active Member
Sep 9, 2004
129
0
27
Aug 6, 2005
#3
  • Aug 6, 2005
  • #3
Anyone???
--Brown
 

67GTCOUPE

Founding Member
Dec 20, 2000
653
0
0
Land of Ice and Snow
Aug 6, 2005
#4
  • Aug 6, 2005
  • #4
I have the under-rider bars on my 67..........THEY ARE GREAT!!!!!!

Zero wheel hop, 6000 rpm burnouts...no problem.

You do need to weld them real good to the frame.
 
1

1Bad67

New Member
Apr 2, 2005
52
0
0
Aug 6, 2005
#5
  • Aug 6, 2005
  • #5
I agree , go with the under ride bars. Easier to install & work really well. You can install them when you put in the new springs. Settling does't affect them as they are attached to the lower plates.
 
1

10secgoal

Active Member
Dec 1, 2003
2,801
3
49
46
San Diego
Aug 6, 2005
#6
  • Aug 6, 2005
  • #6
Underiders are nice. But I don't kow what over rides are.
 

thehueypilot

Active Member
Feb 25, 2004
1,084
0
37
62
Medina,Tennessee
Aug 7, 2005
#7
  • Aug 7, 2005
  • #7
CalTracs and Lakewoods don't require welding and are more effective in eliminating wheel hop and are adjustable.
 
B

BrownPSU78

Active Member
Sep 9, 2004
129
0
27
Aug 7, 2005
#8
  • Aug 7, 2005
  • #8
thanks guys...
--Brown
 

rbohm

Founding Member
Apr 12, 2002
6,698
550
204
67
tucson,az
Aug 8, 2005
#9
  • Aug 8, 2005
  • #9
over ride or under ride, the name says it all;

override, the bars run over the top of the rear axle and leaf springs, essentially creating a 4 link rear suspension.

underride bars run under the axle and leaf spring, operating more as a traction bar only in preventing wheel hop, and spring wind up.

for drag racing and the street, the underride bars are best, as they are easy to install.

for any other form of racing the override bars are best as they eliminate chassis lift, as well as reducing spring wrap. they are also more effective under braking than the override bars. the problem though is that they are more difficult to install, as oyu have to cut open the body to run them through, and they dont fit under the rear seat, so you have to replace it with the panel that shelby used in the gt-350's.
 

Edbert

Founding Member
Jul 13, 2002
3,548
32
109
Austin TX
www.edbert.net
Aug 8, 2005
#10
  • Aug 8, 2005
  • #10
Rbohm nailed it.

To over simplify:
  • OVERRIDE - road racing is their specialty but they are the hardest to install.
  • UNDERRIDE - drag racing is their specialty, minor welding required (did not fit with my subframe connectors)
  • CALTRACS - most expensive but work better than the above and do not require any permanent modification to the car
 

Pathfinder65

New Member
Mar 31, 2005
142
1
0
Ottawa, Canada
www.cardomain.com
Aug 8, 2005
#11
  • Aug 8, 2005
  • #11
Cal tracs are expensive. Here's a possible solution though
http://hotrodsandhemis.com/Traction.html
I haven't made a set...yet, but they certainly look like a good alternative.
Dave
 
1

1Bad67

New Member
Apr 2, 2005
52
0
0
Aug 10, 2005
#12
  • Aug 10, 2005
  • #12
I was able to use the under-ride bars with my TCP subframe connectors.
 
1

10secgoal

Active Member
Dec 1, 2003
2,801
3
49
46
San Diego
Aug 10, 2005
#13
  • Aug 10, 2005
  • #13
Pathfinder65 said:
Cal tracs are expensive. Here's a possible solution though
http://hotrodsandhemis.com/Traction.html
I haven't made a set...yet, but they certainly look like a good alternative.
Dave
Click to expand...

They are a good alternative. Made me a set. Cost me 120 bucks. 40 of it was from the 3/4in drill bit I had to buy that I didn't own, and another 20 for the tap I needed to buy to fix a problem created by the guy I payed 30 bucks to, to weld up a few things. He didn't listen to me and the alignment was off when he welded them. I was pulling consistant 1.69-1.72's on 26' et streets, and pulled many sub 1.6's on the bottle. Nothing has bent yet.
 

Edbert

Founding Member
Jul 13, 2002
3,548
32
109
Austin TX
www.edbert.net
Aug 11, 2005
#14
  • Aug 11, 2005
  • #14
1Bad67 said:
I was able to use the under-ride bars with my TCP subframe connectors.
Click to expand...
I'm not 100% sure but I beleive the reason they didnt fit with my SFCs is that the convertible SFCs are different.
 
You must log in or register to reply here.

Similar threads

A
P0036 P0056 P0137 P0157 2020 Ford Mustang GT
  • AmkoA
  • Jun 16, 2026
  • 2024+ (S650) Mustang -General/Talk
Replies
0
Views
144
2024+ (S650) Mustang -General/Talk Jun 16, 2026
AmkoA
A
R
What's it Worth? 1997 Cobra, a ton of mods and restoration
  • riored97snake
  • Jun 18, 2026
  • What is it Worth?!?!?
Replies
2
Views
207
What is it Worth?!?!? Jun 21, 2026
riored97snake
R
K
Engine 2000 Mustang GT - Fuel issue post-blown spark plug repair
  • kenster1092
  • Feb 26, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
388
SN95 4.6L Mustang Tech Mar 10, 2026
kenster1092
K
1999 Mustang GT - No Start- Need help understanding the fuel pump circuit and how it works
  • 99gtGuy
  • Nov 4, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
538
1996 - 2004 SN95 Mustang -General/Talk- Nov 7, 2025
04newedge-
0
E
2007 GT Stalls when lights or a/c turned on
  • ejscarfo
  • Jun 22, 2026
  • 2005 - 2009 Specific Tech
Replies
2
Views
152
2005 - 2009 Specific Tech Jun 29, 2026
ejscarfo
E
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific 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?