To shim or not to shim?  That is the question..

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76Cruzr

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I've gone back and looked at numerous threads as well as all the info. on vender sites, and I am still puzzled. Are shims required with increased spring arc/lift, increased shackle length or both? My 4" Skyjacker lift was just delivered and I'm looking to order new stock or +3/4" length anti-inversion shackles as well. Will I need to shim the springs with this set up?
Hate to ask all these questions, but you guys are a wealth of information and I would like to get the lift right the first time.
 
woody

woody

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Re: To shim or not to shim?  That is the question.

flange angles is what makes shimming critical....lift doesn't cause the the problems, its getting the u-joint angles to maintain alignment...unfortunately, until you have everything installed, you can't measure that...and worse, no two trucks are "guaranteed" to be the same.

IMO, http://www.4xshaft.com (Tom Woods) has some nice descriptive pics...
 
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76Cruzr

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Re: To shim or not to shim?  That is the question.

Thanks Woody. That was an informative link. I'll put the lift in and address any problems then.
 

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