Suspension Question on Laguna Seca
Suspension Question on Laguna Seca
Is the firmest setting on the standard Boss equal to the softest on the Laguna Seca. I know the LS is more of a "track car" but can you enjoy it around town, softest setting, without the suspension jarring the H.... out of you so that there is blood in the urine! I live in LA so the roads are a mixture. Input would be appreciated.
As far as I can remember... yes. The LS starts where the Street Boss left off.
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From Ford's press release posted on this thread: https://themustangsource.com/f813/bo...-302-a-486460/
Suspension and steering
In keeping with the Boss mandate to provide the best-handling Mustang ever, the already strong Mustang GT suspension system has been further refined. Higher-rate coil springs on all four corners, stiffer suspension bushings and a larger-diameter rear stabilizer bar all contribute to the road racing mission, and Boss models are lowered by 11 millimeters at the front and 1 millimeter at the rear versus the Mustang GT. The real key to handling, though, is in the adjustable shocks and struts, standard on all Boss Mustang models.
“We’ve given drivers five settings for their shocks,” says Brent Clark, supervisor of the Mustang vehicle dynamics team. “One is the softest, two is the factory setting and five is the firmest, and we’ve provided a wide range of adjustment. A customer can drive to the track on setting two, crank it up to five for improved response on the track, then dial down to one for a more relaxed ride home. What’s unique is that drivers will find – thanks to the way the suspension works as a complete system – the softest setting isn’t too loose and the firmest setting isn’t too controlled; each step just provides additional levels of control.”
In keeping with the Boss mandate to provide the best-handling Mustang ever, the already strong Mustang GT suspension system has been further refined. Higher-rate coil springs on all four corners, stiffer suspension bushings and a larger-diameter rear stabilizer bar all contribute to the road racing mission, and Boss models are lowered by 11 millimeters at the front and 1 millimeter at the rear versus the Mustang GT. The real key to handling, though, is in the adjustable shocks and struts, standard on all Boss Mustang models.
“We’ve given drivers five settings for their shocks,” says Brent Clark, supervisor of the Mustang vehicle dynamics team. “One is the softest, two is the factory setting and five is the firmest, and we’ve provided a wide range of adjustment. A customer can drive to the track on setting two, crank it up to five for improved response on the track, then dial down to one for a more relaxed ride home. What’s unique is that drivers will find – thanks to the way the suspension works as a complete system – the softest setting isn’t too loose and the firmest setting isn’t too controlled; each step just provides additional levels of control.”
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From what I have read so far the only suspension differences between the two models are the rear springs and sway bar otherwise the suspensions are identical.
Last edited by 1 COBRA; Nov 26, 2010 at 06:54 PM.
I don't remember the article source, but I recall the damping characteristics of the standard Boss on 5 was the same as the LS on 1. I think this would imply the shocks (and possibly the springs to go with the different shock damping rates) are different on the two. I would assume the rear sway bar is the same.
According to the Ford Spec sheet LS Sway bar is 4% larger.
I haven't seen in any official document that the suspension damping is different. It very well could be, I just haven't seen anything official. Someone with access to the Ford Parts list could check to see if the part numbers are the same between the two model's shocks and struts.
I haven't seen in any official document that the suspension damping is different. It very well could be, I just haven't seen anything official. Someone with access to the Ford Parts list could check to see if the part numbers are the same between the two model's shocks and struts.
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I don't remember the article source, but I recall the damping characteristics of the standard Boss on 5 was the same as the LS on 1. I think this would imply the shocks (and possibly the springs to go with the different shock damping rates) are different on the two. I would assume the rear sway bar is the same.
2012 Mustang Order Guide 111810[1].pdf
"Suspension changes to match the tires and vehicle mission include softer front and firmer rear springs, a bigger rear anti-roll bar, and damper settings that are virtually all firmer than the mainstream Boss (setting 1 or 2 roughly equals setting 5 on the base Boss). The front splitter is far more aggressive, and almost identical to the full-on Boss 302R race car's, and the rear spoiler is replaced with a more aggressive wing. The combined effect is a net downforce of 90 pounds at 140 mph. "
Source motortrend
http://m.motortrend.com/roadtests/co...guna_seca.html
Source motortrend
http://m.motortrend.com/roadtests/co...guna_seca.html
Last edited by Dr Evil; Nov 26, 2010 at 08:18 PM.
That makes sense, especially in light of the stickier tires. I believe that was what Kevin Groot was talking about in the TV show when he mentioned the largest one on a Mustang and the need for a Torsen differential to go with that set-up. Actually, I presume he was talking about the LS, although I don't recall if he mentioned it specifically.
Indeed, I have not either. It was my armchair engineer speculation, based on the description of the base Boss settings vs. the LS. I wonder if those parts numbers are accessible in the Ford system at this point.
I haven't seen in any official document that the suspension damping is different. It very well could be, I just haven't seen anything official. Someone with access to the Ford Parts list could check to see if the part numbers are the same between the two model's shocks and struts.
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Source motortrend
http://m.motortrend.com/roadtests/co...guna_seca.html
http://m.motortrend.com/roadtests/co...guna_seca.html
Last edited by 1 COBRA; Nov 26, 2010 at 08:52 PM.
Seems like a parts listing is in order to straighten this all out!
The info contained in that article is specific enough that I highly doubt it is incorrect. Why would ford say it is a race car with a license plate if not for very aggressive suspension?
Last edited by Dr Evil; Nov 26, 2010 at 09:09 PM.
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That is possible and Motor Trend might be right but it does not explain why Ford's official order guide doen not include different shocks and struts on the 501A option. I would think Ford has highlighted all the differences accurately between the two models, to miss mentioning two intricate components of the LS seem unlikely.
If what motortrend has reported turns out to be true, the LS will probably be the first mustang that doesn't have a ton of understeer built in. Neutral handling with downforce riding on corsas will make this thing a bad *** ride.
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Notice this topic is being discussed now not August, just as the particulars of the quad exhaust are. The reason being those items were not emphasized until the Speed Channel's progam brought them to light. Everyone overlooked them including yours truly.
Motor Trend's article was based on the original press release highlights of the Boss not the production specs.
Motor Trend's article was based on the original press release highlights of the Boss not the production specs.
I am hoping that the LS suspension completely goes away from the rubber bushings and is at least using poly. I redid the suspension on my GT500 twice. I first upgraded to the FRPP handling pack which is optional on the GT and may be the suspension they are using on the regular Boss. The FRPP handling pack is a big upgrade over stock but does nothing for the flimsy three link control arm system. I am hoping the three link control arms on the LS are upgraded to at least the poly bushings. Hoping that the UCA is adjustable is probably wishful thinking. I am guessing the LS still needs to be lowered for road course duty. Adjustable coilovers, a torque arm and a Watts link may still be needed? I am hoping to get the LS to replace my GT500 for the road course without having to completely redo the suspension.
If they are not at least poly, I will need to redo the suspension.......If the curb weight was in the Z06 range, then maybe not. The difference on my GT500 between an adj UCA and the torque arm were night and day. With the stock LCAs and rubber bushings you got terrible wheel hop. The diff just is squirrely under the rear of the car with all that play. Now the Boss won't have near the torque and it may not be as big an issue. The photos I saw of the underside looked to have similar "flimsy" LCAs to the GT500....although they looked shorter? Well anyway, here's to hoping Ford actually put a race quality suspension on the LS.
Last edited by cloud9; Nov 28, 2010 at 08:00 AM.


