GT350 Lowering Springs And Sway Bars from Ford Performance

[8250RPM]

Correct. But I'm pretty sure they are progressive rate springs not linear rate springs. 20mm is just over 3/4"
Eibachs gt350 springs lower the car .9 front and .7 rear. Or nearly 23mm lower front and 18mm rear. I already have 30 series tires and with the R splitter its low as it is.


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[VoodooBoss]

Correct. But I'm pretty sure they are progressive rate springs not linear rate springs. 20mm is just over 3/4"
Eibachs gt350 springs lower the car .9 front and .7 rear. Or nearly 23mm lower front and 18mm rear. I already have 30 series tires and with the R splitter its low as it is.

Sounds like these springs are not for you.

Some additional info:
The springs are slightly stiffer than stock but not much. Still rides fine with no harshness.

 

[8250RPM]

Do you know the rates compared to R springs?


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[VoodooBoss]

The spring rates will not be published but I've confirmed the springs are not progressive.

 

[2012-Boss]

Sounds like these springs are not for you.

Some additional info:
The springs are slightly stiffer than stock but not much. Still rides fine with no harshness.

Stiffer than the stock track pack springs, not R springs, correct?

 

[93cobra]

ETA 4/24/17

 

[8250RPM]

I'm in if they are linear. Still would like to know the rates. Looks like I'll be buying them and checking myself.


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[VoodooBoss]

TMO member @Tob has confirmed that these springs are stiffer than the R springs.

https://performanceparts.ford.com/part/M-5300-W

 

[bpracer]

Since there is no distinction between use on an R or non-R, I'm wondering what Ford baselined for the rear sway bar: R or non-R??

Maybe you will still want the R rear bar if you do this swap.

 

[8250RPM]

I ditched the R rear bar and went with Eibach front and rear bars for adjustment. The Eibach bars are of better quality. I also went with delrin sway bar bushings front and rear. I have the R springs now but will try the FR springs. My order is in [emoji3]


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[VoodooBoss]

Just an update that the springs are now available for purchase and mine are inbound and will arrive next Monday. I hope to have them installed shortly there after. Stay tuned.

 

[Black Boss]

Mine just showed up today:
https://trackmustangsonline.com/threads/gt350r-race-car-build.11882/page-8#post-179917

 

[50Deep]

Total of 10 sets went out today. Waiting on the next batch to arrive

 

[yotah1]

Just an update that the springs are now available for purchase and mine are inbound and will arrive next Monday. I hope to have them installed shortly there after. Stay tuned.

Where did you order them from?

 

[VoodooBoss]

White Bear Lake Ford from the group buy. But ask Dave.

https://trackmustangsonline.com/threads/ford-performance-gt350-lowering-spring-group-buy.12102/

 

[VoodooBoss]

I just got home from the dealer that installed my Ford Performance lowering springs. First the stance looks fantastic and looks perfect with the MPSS tires on the car. More of a gap will be visible with the SC2 tires.

The ride is noticeable firmer and it's not something that's barely noticeable. It's not harsh and doesn't ruin the ride on the street but you'll notice it right off the bat. I drove on a street with construction and you knew the pavement was not perfect. I also hit a few expansion joints on the fwy and they are harsher. Unless your car is a DD I wouldn't worry about it and I probably wouldn't worry about it if your car is a DD. I also ran through a section of pavement that had some large bumps on it and the car moved with the bumps and did not absorb them.

I just realized the before photo is with the SC2 tires and the second one with the MPSS tires.

 

[CSL]

Rick, do you have any experience riding in an R, and if so, what is your anecdotal comparison? Also, how much does the feel change between modes now?

 

[VoodooBoss]

I have not ridden in an R in a while but @50Deep and I are planning on swapping cars for a comparison as soon as his new R arrives.

Nor have I driven any distance in sport or track mode with the new springs but I'll do that this weekend and report back.

 

[VoodooBoss]

Ford Performance has added a sway bar kit and I have an inquiry in to find out how much stiffer they are compared to stock.

https://performanceparts.ford.com/part/M-5490-G

Springs and sway bars. The kit includes the lowering springs (M-5300-W)

https://performanceparts.ford.com/part/M-5700-N

 

[cobrarob]

Car looks Awesome Rick