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  • SN95 4.6L Mustang Tech

slicks and swaying

  • Thread starter Thread starter wht99gtconv
  • Start date Start date Apr 30, 2006
W

wht99gtconv

New Member
Dec 1, 2003
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Apr 30, 2006
#1
  • Apr 30, 2006
  • #1
I was wondering if anybody that runs slicks at the track has this problem. I know slicks are suppose to sway but my car is so bad that you can't hold it in the track. Is there something i can do to help this problem are is this just common.
 

RandyStinchcomb

New Member
May 25, 2005
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Randallstown, Md
May 1, 2006
#2
  • May 1, 2006
  • #2
just the nature of the beast. do you still have a rear sway bar on the car? as this can help.
 

Gearbanger 101

Straight Outta Locash
20+ Year Stangneter
Aug 10, 2002
9,457
1,377
234
Ontario, Canada
May 1, 2006
#3
  • May 1, 2006
  • #3
Switching over to a bias ply front tire for the track and/or a set of skinnies can help as well. A radial tire especially a large, wide diameter tire/rim combo like a 245/45/17's or wider on an 8"-9" rim will experience hardly any side to side motion like a soft sidewall, bias ply drag tire. As a result, the back end moves around all over the place and the front end stays planted, this will cause the act of keeping the car going strait down the track, to be a bit of a chore.

If the bias ply isn't an option, going with a skinnier tire/rim package would help some, since a narrower tire is less prone to darting from side to side, like a wide tire is. You could always let a few pounds of air out of your current front tires to soften the side walls up a little, but that’s kind of counter productive to achieving your best time, since softer front tires increases their rolling resistance.
 

propellerhead

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Apr 13, 2004
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"but what's with the but shots?"
May 1, 2006
#4
  • May 1, 2006
  • #4
Add more air to them.
 
D

d90212

Founding Member
Jan 17, 2000
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kailua, hawaii
May 1, 2006
#5
  • May 1, 2006
  • #5
or fatter slicks
 

FORCED2DV8

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Jun 6, 2005
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Grand Rapids MI
May 1, 2006
#6
  • May 1, 2006
  • #6
Do you have newer control arms ?? If you have worn bushings or stock arms they will sway alot, I know mine did, It was all over the place, Kinda make it more exciting.....I replaced the lower arms first and it made a big diference, Plus you have to play with air pressure and tires also..
 
W

wht99gtconv

New Member
Dec 1, 2003
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May 1, 2006
#7
  • May 1, 2006
  • #7
I have lift bars in the back, but stock upper arms.
 

propellerhead

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Apr 13, 2004
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"but what's with the but shots?"
May 1, 2006
#8
  • May 1, 2006
  • #8
I put 26x10.50x15 MT ET Streets on my GT. At 16-18 psi, it felt like a dog wagging its tail. It scared the crap out of me. At 20 psi, it feels quite normal and stable. I don't have enough torque or power to spin the tires loose even on a halfway decent track prep.
 

hognutz

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Nov 12, 2002
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albany, oregon
May 1, 2006
#9
  • May 1, 2006
  • #9
mismatched bias and radial will make the car a bit of a chore to keep strait. I would invest in some skinnies for the front as well.
 

Ruckus46Gt

Member
Nov 26, 2003
385
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16
Long Island
May 1, 2006
#10
  • May 1, 2006
  • #10
propellerhead said:
I put 26x10.50x15 MT ET Streets on my GT. At 16-18 psi, it felt like a dog wagging its tail. It scared the crap out of me. At 20 psi, it feels quite normal and stable. I don't have enough torque or power to spin the tires loose even on a halfway decent track prep.
Click to expand...
thats funny i have et streets on my get 26x10.5x15s and run them at 11.5 psi and havent has a problem with swaying.

add skinnies and that will take away the sway
 
W

wht99gtconv

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Dec 1, 2003
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May 1, 2006
#11
  • May 1, 2006
  • #11
You telling me that skinnies will help the swaying. I'm running 7.60's at 102mph. I get nervous at 102mph you know what i'm saying.

What kind of skinnies.
 

Ruckus46Gt

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Nov 26, 2003
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Long Island
May 1, 2006
#12
  • May 1, 2006
  • #12
wht99gtconv said:
You telling me that skinnies will help the swaying. I'm running 7.60's at 102mph. I get nervous at 102mph you know what i'm saying.
Click to expand...

Guessing your supercharged running the 1/8th. Guy i know has an 03 cobra and used to run it with et streets in the back no skinnies and he said the sway was really bad. He got skinnies in the front and he said there is almost no sway. He traps 133 in the 1/4

wht99gtconv said:
What kind of skinnies.
Click to expand...
weld prostars, draglights, whatever you like the looks of. 15x3.5 or if you want to go a little wider 15x5. I went 15x5 becuase i have a daily driver and run skinnies up front all the time
 
W

wht99gtconv

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#13
  • May 1, 2006
  • #13
what kind of tires up front
 

Ruckus46Gt

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Nov 26, 2003
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#14
  • May 1, 2006
  • #14
wht99gtconv said:
what kind of tires up front
Click to expand...
could go with mt sportmans or can do liek a lot of people (me included) run a 165r15 tire up front. You can get them at pepboys or a local shop should be able to order them for you. Its aroudn 55 a tire
 

propellerhead

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"but what's with the but shots?"
May 1, 2006
#15
  • May 1, 2006
  • #15
Ruckus46Gt said:
add skinnies and that will take away the sway
Click to expand...
I've heard that too. The reason I was given is that radials (front) and bias ply (rear) tires will track differently. Having the same type on both axles will make them track the same. I don't have personal experience on that so I didn't want to post it. We already have too much of that.
 

hotmustang331

Active Member
Apr 29, 2004
2,967
3
48
Bastrop,TX
May 1, 2006
#16
  • May 1, 2006
  • #16
wht99gtconv said:
You telling me that skinnies will help the swaying. I'm running 7.60's at 102mph. I get nervous at 102mph you know what i'm saying.

What kind of skinnies.
Click to expand...


Wow, thats a heck of a good running car. Should be good for upper 10s @ 125-128 if im not mistaken...

Others know what they are talking about...worth a try.
 
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