This is a little off kilter, but we installed a Pontiac ws-6 steering box and improved the ratio from 1000:1 to omg:1
Vast improvement in highway steering, and a direct swap for $50. Any camaro or firebird box is an improvement, but the z-28 and ws-6 are the primo's.
Put these on this weekend. Made a huge difference on my 79 CJ5 with a 4" lift. Had to plasma cut the shims to fit the 2" wide springs... shoulda told Tom Wood what I was putting them on... It does seem like you are mounting the shims opposite of what you should until you realize you are modifying the angle in front of the axle for the steering... not the rear for the driveshaft.
so exactly which way do the shims need to go...im getting mine ths week and i dont want to mess it up...im going with the 4 degree ones since my castor measured zero degrees
The shims are installed between the spring and the axle with the thick side of the shim facing forward. Hopefully you are getting steel shims. They should be drilled and fastened to the spring pack with the spring center bolt.