Mike B.,

the car looks great.
off topic a bit, I know, but I'm interested in mimicking what you did with your rims (getting rid of the silver lip). What did you do and what was the cost?

thanks

 

Oh, snap. I didnt even notice that. I like it.

 

The stock springs are NOT stiffer in the rear on any Mustang. Get real people that simply would not work. With well over 50% of the weight on the front and no mechanical leverage multipliers the car would handle like **** with stiffer springs in the back.

Dean from Rehagen says "I have not seen the specs you're talking about, but the front rates should be close to double the rear. The Boss 302S car is going to be something close to 500 front, 325 rear."

I say that Ford mixed up the spring rates in the Boss supplement. 26nm is 148pound/inch which is slightly higher than 142pounds/inch of the stock rear and far less than the stock front. 32.4nm converts to 185 pounds/inch which is slightly higher than the stock front 165pounds/inch. For the LS they lowered the rear to 24nm or 137pounds/inch which is even less than stock. But raised the front to 33.5nm or 181pounds/inch. Swapping heavier springs to back makes no sense and is not what they did.

Spring.......... ……..F Type...... F Rate ...R Type ......R Rate

OEM:

GT ................................L ...............165............L................... .142*
05-09

GT Vert..........................L ...............144................L...............122*
05-09

GT500 ............................L ..............190.............L...................166*
07-09

GT/V6 .............................L ..............154.............L...................122****
07-09

GT/GT Vert Brembo ...........L .............167.............L...................131***
2011-12

Boss 302………………………………L…………….186……………..L……………………..148** *
2012

Boss 302LS…………………………L…………….191……………..L……………………..137***
2012

Aftermarket:

H&R Supersport.................P. ............?-275 ...........P ................?-245****

Steeda Ultralights ……………..L ...............195 ............L ...................175**/***

Steeda Sport ...................L ...............200 .............L ...................175**/***

Steeda Comp ..................L ...............225 .............L ...................185**/***

FFRP K Springs* .............P ............173-239 .........P ..............195-236*

Ebach Pro* ....................P ............173-239 .........P ..............195-236***

Ebach Sportline ..............L .........Way Too Stiff, FOR RACE USE ONLY!!

BMR (pn SP009) .............P ..........165……............ L ..................160***

*- tested and confirmed by self
**- tested and confirmed by someone else (could be suspect)
***-manufacturer published numbers
****-picked up off of web (could be suspect)

 

Do you have the rates for the Ford Racing P springs? Are they the same as the K springs?