UPR Kmember kit- Which spring rate? - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 12 Old 09-24-2008, 08:24 PM Thread Starter
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UPR Kmember kit- Which spring rate?

I'm thinking of going with a upr Kmember kit but trying to figure out which spring rate would be best suited for my car. Its a HCI single T70 that makes a little north of 500/500. I will be running 90/10, 50/50 and eibach drag launch springs in the back with an airbag. I just weighed the car and it weighs 3100 lbs. The car will be used for mostly street use, but I race quite a bit. I'm leaning towards the 12" 200 lb spring. Any advice/input appricaited...

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post #2 of 12 Old 09-24-2008, 08:35 PM
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i went with 14" 175's and my car is heavier... youre car could get away with even lighter springs

that 12" spring is gonna be more of a street spring.


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post #3 of 12 Old 09-24-2008, 08:47 PM Thread Starter
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the car will be 90 percent street car and 10 percent drag car
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post #4 of 12 Old 09-24-2008, 10:03 PM
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i use 14" 200's and 90/10's

drives fine

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post #5 of 12 Old 09-25-2008, 09:25 AM
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I believe I read that Team Z was experiementing with 12 inch spring with good luck at the track.

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post #6 of 12 Old 09-25-2008, 09:35 AM
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It depends on what type of spring you'll be looking for, from a street standpoint are you
A. looking for a handling spring for the street.

B. looking for a weight transfer spring for the street.

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post #7 of 12 Old 09-25-2008, 05:18 PM Thread Starter
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Definatly looking for a weight transfer spring for the street
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post #8 of 12 Old 09-25-2008, 07:22 PM
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i run a 14/130 drives fine on the street.

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post #9 of 12 Old 09-25-2008, 07:25 PM
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post #10 of 12 Old 09-26-2008, 07:37 PM
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ChuckNorris would snap the "DEAD EYES" on the car and wheels will HANG!!!


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post #11 of 12 Old 09-26-2008, 10:26 PM
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UPR talked me into the 175lbs springs the first time around. Get the 130lbs springs. It drives on the street just fine and it makes a difference at the track.

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post #12 of 12 Old 09-26-2008, 10:40 PM Thread Starter
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The car will be mostly driven on the street, but I'm not afraid to sacrifice driveablility to make the thing hook on the street/track...
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