Upgrades: differentials and limited slips!

[bcredliner]

Anybody know if the 4.10 differentials are interchangeable with differential in a 4.4/4.6?

[Green Dragon]

Originally Posted by bcredliner

Anybody know if the 4.10 differentials are interchangeable with differential in a 4.4/4.6?

They are. In my case, I had to purchase preface 4.4 rear axels. Since my '05 3.0 6M axels didn't mate with the pre face lift 4.4 output flanges and I couldn't just swap em out. The 4.10 manual cars are different from the 4.10 auto differential. The manual diff is bigger and seemed tougher (even more so than the V8 diff).The auto diff however, May be a direct swap and might be better for you. The front diffs interchanged perfectly. Output splines and hubs are the same post-'2000 across the board . Double check my info, as I'm going off the 4.4./3.0.

I have my Manual 4.10 rear and the oem rear axels (which will fit yours as a direct fit as a combo) which are in good shape up for grabs. If interested, pm me.

[dabenthusiast]

Originally Posted by Green Dragon

They are. In my case, I had to purchase preface 4.4 rear axels. Since my '05 3.0 6M axels didn't mate with the pre face lift 4.4 output flanges and I couldn't just swap em out. The 4.10 manual cars are different from the 4.10 auto differential. The manual diff is bigger and seemed tougher (even more so than the V8 diff).The auto diff however, May be a direct swap and might be better for you. The front diffs interchanged perfectly. Output splines and hubs are the same post-'2000 across the board . Double check my info, as I'm going off the 4.4./3.0.

I have my Manual 4.10 rear and the oem rear axels (which will fit yours as a direct fit as a combo) which are in good shape up for grabs. If interested, pm me.

When you say manual diff is larger, how do you mean.
I have pre face-lift manual diff... if I wanted to do the 4.4I diff do I just swap them out? Or bust open and replace internals.
And would I need to buy 4.4i axels ?

[Green Dragon]

Originally Posted by dabenthusiast

When you say manual diff is larger, how do you mean.
I have pre face-lift manual diff... if I wanted to do the 4.4I diff do I just swap them out? Or bust open and replace internals.
And would I need to buy 4.4i axels ?

The manual diff (rear) is a large case (I know for sure on the post-lci), while the auto diffs are a medium case I believe. I'll post some comparison pics tonight. Both fit interchangeably without doing anything. Direct swap. The one thing I don't know, is if the pre-lci 3.0 axles will mate up with the pren-lci 4.4 diff. You'll need to compare part numbers from real oem, etc. It's possible in your case that you can just pop out/pry out the output flange cups and swap them interchangeably. My e36's all did this between diffs but the e53 could be different, which it was in my case.

Worst case scenario you buy new rear axels for the 4.4 diff. I do belive reading from Sedec's posts, you don't need to if your prefacelift and using prefacelift diffs, making your swap easier. Let me know if that helps. I will post some pics tonight. Front diffs match up, no issues as long as you are post 2000 and on.

Also, you can just slip the front diff through, but I had to lossen the engine mount and Jack up on the motor slightly. No big deal.