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Old 05-08-2014, 06:56 AM   #24
derotoreut
Roto Reuter thats the name...
 
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Join Date: Feb 2010
Location: Darien, NY
Posts: 1,853
Re: How can I level?

Sorry to hear about this. That seems to be a pretty massive spring. I was skeptical when I installed my springs so I went with one that wasn't too drastic. I was concerned about the installed height and spring rate. When you compare the springs I installed to these, you basically have the same free height. However, the greater the spring rate, the stiffer the spring and thus stiffer ride. Yes the design load may be lower, but the spring rate is much greater. That is why you gain an extra inch of installed height over the ones I used. Plus with an extra inch of installed height you're going to have ride stiffness issues. The bottom line is that you have a tall stiff spring that you can't compress much.

Look at the specs on the springs that I installed compared to those 6560-S springs:

Part No.: 2772074
No. of Coils: 8
Free Height: 13.61"
Spring ID: 3.676"
Spring Load Height: 10"
Design Load: 3841
Spring Rate: 1060
Wire Diameter: 0.83"

VERSUS

Moog part #6560S.
13.59in free height.
11in installed height.
1464lb spring rate.
3788lb load.
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My 70 K10 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=782232
My 71 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=651394

1970 SWB Fleet K10 4X4, 5.3L LM7, 4L60E, Dakota Digital RTX, Vintage Air, Ididit tilt
1971 SWB Fleet C10 - Original SWB Arizona truck, new custom restoration project

"Kick out your motor and drive while you're still alive - kick it out!" - Heart 1977
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