Coil overs vs Shelby Drop front Suspension - Vintage Mustang Forums
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post #1 of 36 (permalink) Old 07-13-2019, 09:09 PM Thread Starter
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Coil overs vs Shelby Drop front Suspension

Thinking in the future which set up is trebly better and why and hopefully from direct experience:

1967 fastback

1. Bilstein font coil over (or similar)

Vs

2. Shelby drop 1 inch lowering springs, bilstein shocks, and with upgraded uppers Lower(no rubber bushings) and struts rods with no rubber bushings.


So my last 67fb I had option 2. I thought it was a pretty nice ride. Of course everyone says coil overs are the best and a much better street ride. But is it really that much noticeable and worth the extra 1200$ ish?

Anyone have direct experience with the above?




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post #2 of 36 (permalink) Old 07-13-2019, 09:26 PM
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Everyone has been wrong at least once so don't believe everything they say.
What is a coil-over if not a spring over the shock with an adjustable rate and height?

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post #3 of 36 (permalink) Old 07-13-2019, 09:42 PM
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A year ago was running just the Arning drop with lowering springs and poly SD spring perches. This past winter I installed the SoT Bilstein coil over system. I consider it a good investment since I dabble in auto cross and it made an incredible difference in the car at events. Even on a street only car I think you would notice better ride quality.

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post #4 of 36 (permalink) Old 07-13-2019, 10:15 PM Thread Starter
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Nailbender,


So obviously you have direct experience which is awesome and I appreciate your comment. With the coil over what is the main difference while driving.

Example: at highway speeds 70mph does we it feel more planted and stable?

Also Did you have any oversteer or bump steer issues?





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post #5 of 36 (permalink) Old 07-13-2019, 10:32 PM
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If you're talking coil over mounted on the lower control arm, I personally felt a night and day difference when I went from the stock suspension with 1" lowering GT springs and arning drop to the Street or Track suspension. The simplest way to describe the lower control arm coil over is that the ride feels more like a modern car. I know that's vague and it'll never be a modern car but all of the harshness over uneven road surfaces virtually disappeared. It was immediately noticeable on the first drive with eyeballed alignment and was even better after a proper alignment.

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post #6 of 36 (permalink) Old 07-13-2019, 10:43 PM Thread Starter
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Lightning,

Did you have this setup?



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post #7 of 36 (permalink) Old 07-13-2019, 11:27 PM
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Originally Posted by rpm2380 View Post
Nailbender,


So obviously you have direct experience which is awesome and I appreciate your comment. With the coil over what is the main difference while driving.

Example: at highway speeds 70mph does we it feel more planted and stable?

Also Did you have any oversteer or bump steer issues?
The coilover setup did eliminate an anal pucker moment from one of my favorite back roads and I have no bump steer that I know of.

You certainly don't have to go full gonzo to have a nice handling Mustang. I wanted to give the rice burners a run for their money at autocross events. More experienced drivers are able to do that while driving my car while I'm slowly catching on.

If your starting from total worn out stock I don't see how the coil overs are going to be that much more $'s wise when all is said and done.

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post #8 of 36 (permalink) Old 07-13-2019, 11:32 PM
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For track competition, I can understand wanting to go with a coilover suspension. FWIW, my '70 Mustang has:

- Arning drop
- Scott Drake street performance coil springs
- Roller Spring perches
- Bilstein shocks
- 1-1/8" front anti-sway bar
- Factory rear anti-sway bar
- Export brace.
- (I have a Monte Carlo bar, but it won't fit with the factory shaker.)

I've had the car up to 100 MPH and it tracks straight as the string. The front end does not float or drift. Bumps in the road get soaked up nicely. (My car is a Mach 1 and it has a factory style front spoiler. Not sure if that actually does anything.)

Just today I went on a cruise with my Mustang club. I was following a brand new 2019 Bullitt edition Mustang with "magna-ride" suspension. We were moving pretty good on a windy, mountain road. When we stopped, the Bullitt owner expressed how surprised he was that my "old Mustang" was able to keep up with his new Mustang so well. He was quite impressed.

Of course, on a track, I'm sure that Bullitt Mustang would be able to do things my car can't do. That's OK. I didn't really build my car for track competition. I have done autocross one and I plan to do it more. It's just for fun. I'm not intending to win any championships. But currently, my Mustang is much more capable than I am as a driver.
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post #9 of 36 (permalink) Old 07-13-2019, 11:36 PM
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This is a pic of my car in the rear view mirror of the Bullitt. Just wanted to throw this in there because, hey, everyone likes pictures, right? This was before we hit the winding, mountain road.
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post #10 of 36 (permalink) Old 07-14-2019, 12:00 AM
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Quote:
Originally Posted by rpm2380 View Post
Thinking in the future which set up is trebly better and why and hopefully from direct experience:

1967 fastback

1. Bilstein font coil over (or similar)

Vs

2. Shelby drop 1 inch lowering springs, bilstein shocks, and with upgraded uppers Lower(no rubber bushings) and struts rods with no rubber bushings.


So my last 67fb I had option 2. I thought it was a pretty nice ride. Of course everyone says coil overs are the best and a much better street ride. But is it really that much noticeable and worth the extra 1200$ ish?

Anyone have direct experience with the above?




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You'd have to have serious, serious dollars in a factory front end to even come close to the performance of an
aftermarket coil-over. And no matter what you did, you couldn't get close to the compliant ride of a CO.

I've got no dog in the fight but I've been tuning suspensions for 20+ years.

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post #11 of 36 (permalink) Old 07-14-2019, 12:08 AM
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I have your option #2. Sort of.
Shelby drop, opentracker boxed lowers, adjustable strut rods and RideTech Coilovers.

So, it is not a true coilover like the SoT . The only reason I went with this is because my uppers were new and I already had Global West strut rods installed a long time ago.

I like the ride. My friend thinks it is a little stiff. Hitting potholes still kind of jars you. But going over the same potholes in my Fusion is pretty similar. San Francisco has horrible streets.

After saying all that. If I were to do it again. SoT Coilovers for sure. I have learned you might as well stay with the best and not look back.

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post #12 of 36 (permalink) Old 07-14-2019, 12:43 AM
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There are coil overs and then there are coil overs. There are some coil over kits that basically replace the stock package and then there are kits like Street or Track that designed a proper coil over. The ones that replace the stock spring are IMO for marketing. A kit like Street or Track are making direct improvement. With the Street or Track by moving the spring and shock to the lower arm allow for a longer spring and a bigger shock that can hold more fluid for better cooling. With a longer spring you allow for more finite adjustment and control. A major reason though is by moving the spring closer to the wheel you improve the motion ratio which means you can do more with less spring rate for a better ride and more control.

My hind sight 20/20 as a suspension newbie. Part of a suspension upgrade is for better handling and part is for better feel. I run a full non coil over Street or Track suspension. Besides the better geometry which makes the car handle better is getting rid of rubber bushings. My suspension is all bearing. By eliminating a flexing bushing with something that doesn’t, dramatically improves the feel and response in every day driving. It adds to the modern feel. Better geometry and alignment settings are the other part of the equation.

I spent a couple years learning about suspensions both by reading and picking the minds of people who know what they are doing like @289GT. I’ve learned a lot and I’m still learning a lot. I highly recommend taking time to learn about suspensions and the faults of the Mustang suspension before you dig in.


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post #13 of 36 (permalink) Old 07-14-2019, 12:47 AM
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Quote:
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This is a pic of my car in the rear view mirror of the Bullitt. Just wanted to throw this in there because, hey, everyone likes pictures, right? This was before we hit the winding, mountain road.
Kinda reminds me of the scene from Bullitt.
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post #14 of 36 (permalink) Old 07-14-2019, 03:10 AM
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Lightning,

Did you have this setup?



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Yes that is the suspension Im running. I have the street valved shocks and feel it was money well spent.
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Last edited by Lightning; 07-14-2019 at 03:14 AM.
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post #15 of 36 (permalink) Old 07-14-2019, 10:39 AM
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Kinda reminds me of the scene from Bullitt.
Quote:
Originally Posted by Klutch View Post
This is a pic of my car in the rear view mirror of the Bullitt. Just wanted to throw this in there because, hey, everyone likes pictures, right? This was before we hit the winding, mountain road.
My wife and older son in the Emberglo following my younger son and me on a little pleasure drive...
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