Have a Spring question....

[ridin_low07]

Im looking into going low with my 02 Yukon XL. I bought the Crown 3/4 keys/coil setup and got to brainstorming. I dont know alot about spring rates and such but looked up the moog replacements....

Moog offers the 81069 as a factory replacement. Specs are listed in a screenshot below. I looked up a set of QA1 springs 10-450 that seem like theyd provide a 7" drop. Am I wrong in assuming this?

 

[Big Mama]

It looks like the original height is 7” shorter but I don’t see the spring rate of the Moog. It seems that a shock compressing 12 inches is extreme but I haven’t tried this on an 800. @iamdub @Joseph Garcia may know.

 

[ridin_low07]

The moog is 254lbs sorry. Didnt realize it didnt show that

 

[iamdub]

Even if you did manage to get your Yukon sitting on that spring, it'd be really compressed and would ride as if you had a solid pipe instead of a spring. What little suspension travel you may have would quickly be stopped by the axle bottoming out.

 

[ridin_low07]

C notch and free travel mod

 

[HiHoeSilver]

The 81069 is the stock rear spring for a gmt800 Z71.

 

[ridin_low07]

Looks like 81071 is the correct spring. Havent found the spring weight on it yet. Maybe Tony will chime in with his experience.