Ford Racing Boss Springs

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Mar 21, 2013 | 07:55 PM

#21

four-walling

GT Member

Joined: October 3, 2011

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From: San Diego

Quote:

Originally Posted by Brandon302

Why have you guys wanted to only lower the rear? I would think from a performance standpoint you would want to also put the P springs on the front so that you have springs that have complimentary rates.

The reports from the field are that P springs on the front only drop the Boss about 1/4".

Besides, in my opinion, the driving experience of the Boss on the car's OEM front linear springs is unsurpassed.

Last edited by four-walling; Mar 22, 2013 at 09:06 AM.

Mar 21, 2013 | 07:58 PM

#22

Brandon302

Shelby GT350 Member

Joined: May 6, 2012

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From: Crofton MD

Quote:

Originally Posted by four-walling

The reports from the field is that P springs on the front only drop the Boss about 1/4".

Besides, in my opinion, the driving experience of the Boss on the car's OEM front linear springs is unsurpassed.

This is true it doesn't drop it much but I can tell the front it stiffer, don't you have to buy the springs as a set of 4 anyway?

Mar 21, 2013 | 08:03 PM

#23

four-walling

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Joined: October 3, 2011

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From: San Diego

Ford springs, yes. Other suppliers, no. For example, I believe Steeda sells just rear springs.

I just like all of the suspension parts coming from the same company.

Mar 21, 2013 | 08:27 PM

#24

Brandon302

Shelby GT350 Member

Joined: May 6, 2012

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From: Crofton MD

Quote:

Originally Posted by four-walling

Ford springs, yes. Other suppliers, no. For example, I believe Steeda sells just rear springs.

I just like all of the suspension parts coming from the same company.

Makes sense, since the springs are made to compliment each other. I really need to find the spring rates for the P springs to see if they are any different then the stock Boss springs and the T springs that are coming out.

Mar 22, 2013 | 03:26 AM

#25

SvtRide

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Joined: August 24, 2012

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Quote:

Originally Posted by four-walling

Probably referring to the Ford Racing M-5300-P spring. I just had a set installed today also on the rear only of my Boss:

Do you have a before picture to go alongside the after posted?
Thanks.

Mar 22, 2013 | 08:49 AM

#26

four-walling

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Joined: October 3, 2011

Posts: 163

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From: San Diego

Quote:

Originally Posted by SvtRide

Do you have a before picture to go alongside the after posted?
Thanks.

before and after:

Name: prelower_zps8cdec0e2.jpg
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Size: 99.2 KB

Name: 7662fa9f-fb58-4394-a4c0-d9c07f8f2a21_zpsb804d32a.jpg
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Size: 49.5 KB

slightly different angle on the pics, but the change is clear.

Last edited by four-walling; Mar 22, 2013 at 08:58 AM.

Mar 22, 2013 | 11:47 AM

#27

MustangFanatic

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Joined: September 10, 2004

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From: Charlotte NC

Quote:

Originally Posted by Brandon302

Brandon, I agree - I wish the spring rates were published, can't make a fair comparison without that information.

Kerry, pictures really show the change. I just hate how high the rear of the car sits. Love the wheels too!

Last edited by MustangFanatic; Mar 22, 2013 at 11:50 AM.

Mar 22, 2013 | 05:05 PM

#28

SvtRide

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Joined: August 24, 2012

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Quote:

Originally Posted by four-walling

before and after:

slightly different angle on the pics, but the change is clear.

Yep. Definitely notice the difference. I like. Thanks for posting the evidence. See what you started. Just ordered the M5300-P springs, adjustable pan hard rod.

Mar 22, 2013 | 06:33 PM

#29

four-walling

GT Member

Joined: October 3, 2011

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From: San Diego

You will also need the M-5570-A jounce stops or trim the ones that came on the car.

Congrats!

http://www.fordracingpartsdirect.com...p/m-5570-a.htm

Mar 27, 2013 | 07:10 AM

#30

batman48195

V6 Member

Joined: February 20, 2011

Posts: 72

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From: Detroit, MI

Quote:

Originally Posted by four-walling

You will also need the M-5570-A jounce stops or trim the ones that came on the car.

Congrats!

http://www.fordracingpartsdirect.com...p/m-5570-a.htm

Hey Kerry,
At the link you provided, it says "Original Equipment on 2012-2013 Shelby GT500" in the description. Does that mean the Shelby has the P-Springs from the factory and sits lower than the Boss?
Brian

Mar 27, 2013 | 08:33 AM

#31

four-walling

GT Member

Joined: October 3, 2011

Posts: 163

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From: San Diego

The jounce stops were the original equipment on the 2013 GT500. Don't know about the springs-you will need to visit the Shelby boards.

Apr 24, 2013 | 09:47 AM

#32

JPC

Bullitt Member

Joined: October 26, 2011

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I too very interesting in learning more about M-5300-T springs for the Boss
I have the Eibach prokit springs
Should anyone find out the spring rates for these T springs please post

Apr 24, 2013 | 06:14 PM

#33

tlflow

Member

Joined: July 17, 2011

Posts: 24

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From: Republic of Texas

Quote:

Originally Posted by Brandon302

springs nor shocks are made by ford ... only matched/tuned for generally acceptable performance, not custom tuned nor max performance

still fun and they match

Apr 24, 2013 | 06:34 PM

#34

Brandon302

Shelby GT350 Member

Joined: May 6, 2012

Posts: 2,060

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From: Crofton MD

Quote:

Originally Posted by tlflow

springs nor shocks are made by ford ... only matched/tuned for generally acceptable performance, not custom tuned nor max performance

still fun and they match

I recognize that, but I am sure they are made to a certain spec for the Ford.