Need help choosing leaf spring load (GMCk10)

[DMcLeod]

Vehicle: 69 GMC 1/2 ton pickup 4WD



The old springs are sagging bad and was looking at replacement springs. The manuf. lists choices based on "load", such as:

Front leaves/load; 1/400, 2/900, 3/1100

Rear leaves/load; 4/1900, 5/2350, 6/3390

What does this all mean, and how does a person choose the right one?

 

[Hoefler]

It looks like these are helper springs you add to your current spring stack. Add 1 leaf, increase load capacity 400lbs etc. .

 

[DMcLeod]

I think they're talking about replacement springs...

Here's an example

http://www.eatonsprings.com/67-72ChevroletStandardCabPickupLeafSpringApplicationGuide.pdf