Axle shimming ?

[burban1500]

i went from running 4'' springs to 6'' springs in the burb and now i have a good vibration coming from the front drive shaft. I dont think it really needs to be lengthened because the splines arent showing however the angle is pretty ****ty. should i be running some sort of shim to help in the front and if so what degree? thanks for the advice

 

[readymix]

You need to measure the angles. That wil show you what degree of shim you need.
On the front you need to get to a balance between pinion angle and castor if you drive it on the street at all.

 

[burban1500]

where do i get something to measure the angle and how do i determine the balance between pinion angle and caster for street driving? truck is my dd

 

[readymix]

Read this

http://www.4xshaft.com/driveline101.html


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