5.0L General Discussion This section is for non-tech specific information pertaining to 5.0L Mustangs.

The "Fox Body Lean"

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Old Jun 28, 2009 | 08:04 AM
  #1  
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steve58
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Default The "Fox Body Lean"

I keep hearing bits and pieces about the infamous "Fox Body Lean", but I have yet to notice it,,, unless its the way some of these car "squat "in the rear.

i can also see how the unibody can twist with some of the more powerful ones.

So educate me,,
Old Jun 28, 2009 | 07:55 PM
  #2  
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Broken seat rail, twisted frame rail, broken spring. I haven't heard of the "fox body lean" as being a fox only problem.

Last edited by Pony 5.0; Jun 28, 2009 at 08:07 PM.
Old Jun 28, 2009 | 08:47 PM
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I think its referring to the fact that the seats do not appear level when looking from behind. Common on '79-'04 cars.
Old Jun 28, 2009 | 10:25 PM
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he might be talking about the fact that the rear suspension commonly seems uneven in these cars.
Old Jun 28, 2009 | 10:38 PM
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I've heard of the "gangsta lean" = refers to broken seat , accompanied by often cracked floor pan
Old Jun 28, 2009 | 11:49 PM
  #6  
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never heard of the fox body lean. my car sits level
Old Jun 28, 2009 | 11:56 PM
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never heard of the "fox body lean", but I have noticed that the nose of some fox's with stock suspension seem to sit high. Its better for weight transfer.
Old Jun 29, 2009 | 10:11 AM
  #8  
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I think he means when the driver side of the car sits lower than the pass. side... since the car always will have more weight on that side (driver)

usually caused by worn suspension....
Old Jun 29, 2009 | 10:56 AM
  #9  
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Originally Posted by Shelty
I think he means when the driver side of the car sits lower than the pass. side... since the car always will have more weight on that side (driver)

usually caused by worn suspension....
Its actually a frame vs RWD problem. In just about any american RWD car or truck that has a good amount of torque, and is driven rough, you will find that the drivers front will sit lower, and the passenger rear will sit higher.

As you drive the car, hard starts off the traffic light, and speedy acceleration will lead to the engine twisting the frame ever so slightly. As the body ages, and the miles increase... the frame continues to go through stresses which will, over time, lead to additional stress on the frame.

Ever seen a mustang launch hard? left front tire comes up right? Take a playing card, bend the left top corner, and bottom right corner up towards themselves. place the card on a table, and press down on the top of the card. You have now proved to yourself what kind of stress happens to a vehicles frame. pressing down on the top of the card, simulates the extra weight over the front end... because of that big chunk of iron, we like to call... and engine.

so. if you notice the "fox body lean" you are actually just seeing physics at work, on yet another, aged, american RWD vehicle with a torquey engine.

BTW, my S10 does it too!
Old Jun 29, 2009 | 11:52 AM
  #10  
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i had a lean....i doesnt no more.

the frame rails on these cars are....flimsy to say the least. i was highly surprised of what makes the frame rails on these cars. a series of shaped thin pieces of plate steel spot welded together. i think that has to not help with the lean over the years.

my unlevel stance was due to the lack of frame rail.


now that i have corrected this issue


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