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General Suspension Questions

accel

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May 19, 2017
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Location
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Vehicle(s)
'17 GT PP
Hi Tim,

My purpose in learning about ride frequency (I put the formula in Excel) and briefly explain it to others (with a chart), is to simply learn what is different about the various Mustang trim levels.
Once people learn this then they can then make an informed decision about what springs to use the get the basic ride characteristics of a target vehicle.
For example, a person with the Base Mustang wants to have their car handle like a GT350, or a PP2. What springs are necessary to accomplish this upgrade. (Yes there is a lot more than just springs and dampers...)

I see so many people in this forum asking the same question "What are the best springs to get for my Mustang?" and they are only concerned with the drop distance and how the car will look.

ModelNotesFront Spring lbs/inchRear Spring lbs/inchAverage Ride Frequency
GT non-PPOEM
160​
668​
1.36​
GT PP1OEM
165​
728​
1.40​
GT PP2OEM
198​
822​
1.51​
GT Mach1Standard
194​
657​
1.42​
GT Mach1With Handling Package
211​
742​
1.50​
GT350(2016-18)
194​
914​
1.53​
GT350(2019+)
211​
857​
1.53​
GT350R
240​
914​
1.62​
GT500
251​
885​
1.52​
GT500CFTP
268​
942​
1.58​
Popular Linear Springs
GTSteeda Minimum Drop & Ultralite Linear
200​
800​
1.50​
GTJ&M Products Minimum Drop Sport
210​
815​
1.53​
GTSwift Spec R #4X914R (5/14 Kg/mm)
281​
784​
1.63​
GTBMR Performance (SP763/SP080)
170​
740​
1.42​
GTBMR Handling (SP083)
250​
980​
1.67​
Really nice data set. Would be very informative if f/r swaybars data was included for stock ford packages (base, pp1, pp2, .....)
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