Phizinza Posted October 27, 2006 Share Posted October 27, 2006 When changing a 3.7 LSD to a 3.9 can you use the 3.9 ring gear in the 3.7 diff housing or do you put the LSD unit in the 3.9 diff housing (using the 3.9's ring gear.) Is the 3.9 pinion gear different to the 3.7 pinion gear? Cheers, Quote Link to comment Share on other sites More sharing options...
Jerry DeMoss Posted October 27, 2006 Share Posted October 27, 2006 When doing the conversion I never tried to put the 3.9 into the 3.7 housing.I did hear that the pinion gear may be different.I am sure there is someone who has tried that. Quote Link to comment Share on other sites More sharing options...
baccaruda Posted October 27, 2006 Share Posted October 27, 2006 use the housing and ring gear from the 3.9. I've made a couple of 4.11 conversions and taken them both to a driveline shop to have the shims (for the races) dialed in and both times, adjustments were needed. Something to keep in mind. When changing a 3.7 LSD to a 3.9 can you use the 3.9 ring gear in the 3.7 diff housing or do you put the LSD unit in the 3.9 diff housing (using the 3.9's ring gear.) Is the 3.9 pinion gear different to the 3.7 pinion gear? Cheers, Quote Link to comment Share on other sites More sharing options...
Phizinza Posted October 28, 2006 Author Share Posted October 28, 2006 When you've used the 4.11, did you have to swap the pinion gear as well? Or was it just the ring gear? Quote Link to comment Share on other sites More sharing options...
ShawnW Posted October 29, 2006 Share Posted October 29, 2006 They are a set so to help insure compatibility keep the ring and pinion together. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.