SPRING RATES & DROPS: ALL IN ONE THREAD!!

dsp4848

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Added your sheet to the OP buddy. :)
Awesome, thanks!

The Vogtland Sports are 1.3" front your chart shows 1.5" And thank you for making this spread sheet. There is some mis information also on the OPs Swift Spec Rs. Here is the link showing the Vogtland drop. http://www.americanmuscle.com/vogtland-sport-plus-springs-coupe-1516gt.html
Yeah, I see where AM says 1.3" for the front, Vogtland's catalog says 1.5" for the sport plus. :shrug: Just to stay consistent, I'm going with what the manufacturer says, but thanks for pointing that out. When I was putting the table together, I noticed a lot of inconsistencies between different sites, so I always just defaulted to what the manufacturer said if that info was on their site.
 

BmacIL

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Added GT350 and GT350R springs to the mix as well.

If anybody knows the spring rates for the stock EcoBoost, EcoBoost Performance Package, and V6 let me know.
One important note: to use the Shelby springs you have to buy two left rears as well as the upper spring perches.
 

BmacIL

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BmacIL

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[MENTION=9985]BMR Tech[/MENTION] or [MENTION=10893]David@Steeda[/MENTION], do you know the rates for the EB/EB PP stock springs? I forgot to ask when I was talking to my contact.
 

MtnBiker

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One important note: to use the Shelby springs you have to buy two left rears as well as the upper spring perches.
Just making sure ... the springs we're after for a GT are listed as "monotube" vs the "Magnaride" designation right? And are we sure that the "monotube" base model springs are indeed the ones we have specs for in the summary table?
 

BmacIL

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Just making sure ... the springs we're after for a GT are listed as "monotube" vs the "Magnaride" designation right? And are we sure that the "monotube" base model springs are indeed the ones we have specs for in the summary table?
Yes.
 

SpeedLu

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Progressives will usually make for a better daily driver than Linear, and for track use the best Progressive setups are competitive with the best Linear. Linear springs are preferable for some track applications though, having a more uniform spring rate and thus more predictable handling.
 

Performance nut

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Anyone got GT350 numbers and if they work?
 

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Last edited:

BmacIL

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I second that. Would like the full part numbers for the "monotone" springs and rear isolators.
Springs:
FR3Z-5560-T

Still working on the upper mounts...
 

Performance nut

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Springs:
FR3Z-5560-T

Still working on the upper mounts...
So if I am reading the Ford part catalog right, the rear springs are identical in a GT350 and a Mustang GT. Can someone confirm?
 

BmacIL

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So if I am reading the Ford part catalog right, the rear springs are identical in a GT350 and a Mustang GT. Can someone confirm?
Negative. The 15/16 GT PP rear springs are FR3Z-5560-G, for instance.

You might just have to order the upper isolator through Ford Parts instead of one of the many great dealer stores, because I can't find a way to search for GT350 parts on there.
 

Performance nut

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Negative. The 15/16 GT PP rear springs are FR3Z-5560-G, for instance.

You might just have to order the upper isolator through Ford Parts instead of one of the many great dealer stores, because I can't find a way to search for GT350 parts on there.
Have you tried using a VIN? Not sire if someone with a GT350 is willing to look this up using their VIN.
 

BmacIL

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