we have a pretty good idea on what torsion bars are what, at least as far as lightest to heaviest rate. i would like to get some info compiled on the leafs so we can determine the same rate info.

if we can get a bunch of guys in here with thier spring codes, and vehicle configurations i think we can put together a list. ill start

spring code = 1K
truck = 02 4wd ex.cab 4.0 manual


anybody else?

 

truck = 04 4wd extend cab 4.0 auto level II
spring code = 1C

 

Like all LIIs, mine is 1C.


Here's a summary of the leaf springs that were listed for Rangers in 2003. Other late models are probably similar:

combined rating / pack thickness at axle pad / number of leaves / door code

2750 lb / 1.82" / 4 / code C
2600 lb / 1.64" / 4 / code K
2550 lb / 1.60" / 4 / code ?

All leaf packs are 56.5" x 2.5"

 

bob, thank you. i hadnt found any info on thickness in my searching. that pretty much takes care of my needs!

anybody wanna fill in that last blank?

 

The lightest spring pack (2550) is only listed for 2WD regular cab XL/XLT equipped with the standard "Payload Package 1" - at least that's how it was in 03. I haven't been able to figure out the code but someone out there must have a truck with those specs.

 

don't know mine.....they are Skyjacker springs...