The Rabbit1 Posted April 7, 2012 Report Share Posted April 7, 2012 when changing to 3.90's I read a post a while back that stated they usually don't need different shims, how likely is that? can't have the car down for a week while I special order shims, and don't want to order $160 shim kit I don't need. Link to comment Share on other sites More sharing options...
IntercooledFlatty Posted April 8, 2012 Report Share Posted April 8, 2012 i don't do these, i have a buddy set them up for me but i don't ever recall him using anything other than the 3.90 ring and pinion all of mine have worked fine Link to comment Share on other sites More sharing options...
The Rabbit1 Posted April 8, 2012 Author Report Share Posted April 8, 2012 so is that the consensus? Link to comment Share on other sites More sharing options...
The Rabbit1 Posted April 8, 2012 Author Report Share Posted April 8, 2012 i don't do these, i have a buddy set them up for me but i don't ever recall him using anything other than the 3.90 ring and pinion all of mine have worked finehow many would you say you have seen done this way? think you could ask him real quick to see? Link to comment Share on other sites More sharing options...
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