Upgrades: differentials and limited slips!

[bmwman528e]

Could I put 2001 BMW X5 4.4 3:64 diff's in my 05' 3.0 that has factory 4:10's. I didnt know if the 04-06 had different diff setups.

[Ricky Bobby]

From what the OP has said, yes you can swap the factory 4.10's for 3.64's from the early 4.4's, the housings are interchangeable

[sedc]

Originally Posted by Nick P

Just wanted to know, how you figured out, it will understeer with both locked axles?

We built a '01 3.0 5 speed with factory BMW salisbury type LS units front and rear...it understeered unacceptably in the snow, so the rear LS was pulled out.

Originally Posted by bmwman528e

Could I put 2001 BMW X5 4.4 3:64 diff's in my 05' 3.0 that has factory 4:10's. I didnt know if the 04-06 had different diff setups.

Yes, all E53 3.0i and 4.4i diffs will interchange (though you may have to change stub axles/pinion flanges on the rear)

This gearing swap really does NOT make much of a difference for auto cars however, probably more hassle than it is worth and it's anybody's guess if there's any actual MPG improvement with the slushbox.

I did this because gearing on the 5 speed manual 3.0i cars is horrendous from the factory. The 6 speed cars are only tolerable because you get overdrive, but when I eventually upgrade to one, I will be swapping over my 3.64s to it

[m5james]

Thread revival only because I'm getting bored with my E53 X5 4.4l. Even when supercharged, the M62 is a timebomb waiting to explode, but the BMW I6 has always been known as being a great engine all around. I've always thought it'd be fun to have bought a 3.0 X5 (or now X3) and turbo the crap out of it like the 3 series guys do. What I didn't know is that the 2.5/3.0 were harder to FI than the 2.8/3.2 engines...then I found this guys page today - E46 Turbo 330Ci ZHP » Turbocharging your E46 Non-M

I've written him with my idea and asked for advice on what'd be best...finding a manual E83 X3 or E53 X5 and go full turbo on it. While the E83 X3 is lighter, I've driven one before and it's far cheaper feeling and looking...but lighter is key if I wanna go faster. Either way, just talking and throwing out ideas.

[Ricky Bobby]

Originally Posted by m5james

Thread revival only because I'm getting bored with my E53 X5 4.4l. Even when supercharged, the M62 is a timebomb waiting to explode, but the BMW I6 has always been known as being a great engine all around. I've always thought it'd be fun to have bought a 3.0 X5 (or now X3) and turbo the crap out of it like the 3 series guys do. What I didn't know is that the 2.5/3.0 were harder to FI than the 2.8/3.2 engines...then I found this guys page today - E46 Turbo 330Ci ZHP » Turbocharging your E46 Non-M

I've written him with my idea and asked for advice on what'd be best...finding a manual E83 X3 or E53 X5 and go full turbo on it. While the E83 X3 is lighter, I've driven one before and it's far cheaper feeling and looking...but lighter is key if I wanna go faster. Either way, just talking and throwing out ideas.

If I had an extra 6 grand I'd just throw the ESS supercharger on my E53. Reliable, daily driven capable power.

[Ricky Bobby]

M54B30 Twin Screw Stage 1 (TS1) - ESS Tuning | BMW Tuning Parts | BMW Racing, Tuning, Aftermarket, Performance Parts | Engine Power Chips | Performance Upgrades Chip

It says application intended for E53 3.0 on the bottom, just email ESS if you are serious about it. There literally can't be much difference between the E46/E39 and E53 kit, maybe a different software file

[dabenthusiast]

by chance does anyone know if an e39 m5 3.64 lsd will fit ???
i have chance to buy one locally.

[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 ?