Anyone done the coil over converion?

[Jess@FarmboyFab]

494lbs/in i believe is factory 05-08...that should give you a starting point

 

[AsTroSS]

494lbs/in i believe is factory 05-08...that should give you a starting point

Spring Rate (lbs./in.) = Load (lbs) / Deflection (in.)

If spring rate is 500 and corner load is approx 2000 lbs , then deflection should be 4 inch.

But most confusing part is if I try to calculate dual spring rate.

Total Wheel Travel (in) 10
Sprung Weight of corner (lb.) 2000
Distance (dist1, dist3, or dist5)(in) 20
Distance (dist2, dist4, or dist6)(in) 20
Droop% 40
Spring angle from vertical (Degrees) 1


Calculator results:

Primary Spring Rate (lb./in) 500

Individual Spring Rates (lb./in) Main : 1250

Individual Spring Rates (lb./in) Tender: 833



My calculatons is beased on this calculator : http://f-o-a.com/calculator.html



Where I can find 3inch coil with 1250 lbs rate?


Stiffest 3 inch Eibach coil for 12 inch travel is only 500lbs

 

[Nor-Cal Nick]

For a guy that is starting a project like you are I would say you need to work with King racing shocks. Spring rate is just the start of getting it all right. Shocks length and spring length and valving will all effect each other and King racing shocks can help you get the complete shock spec'd out so your truck rides nice and the coil over works correctly.

We have gone threw a crap load of springs in the beginning when we where playing with this but after you there is SO much more than just spring rate that makes a difference in your set up.


Nor-Cal Nick