The Shoeman

Hello,

I've been loving this site for quite a while now. So much information. You all are awesome!

Well, I can't seem to find the answer to my question through searching, so I'm asking to anyone who knows.

What's the differences between Transmissions 722.664 (E320 4Matic) & 722.669 E430 4Matic)?

Are they interchangeable? If not, why? what's different? Can I take parts off of my 2001 e430's broken transmission and put them on the donor transmission from the 2002 E320 and have it work? (both are 4Matic)

Does the TCU need to be swapped out also?

I'm sure there will be more questions as I start to roll through this project, but hopefully this one can be a good start.

Thank you all in advance for your help.


Sincerely,

Bill

cm60k

1) E320 4Matic "722.664" is (300Nm/tq)

2) E430 4Matic "722.669" is (400Nm/tq)

*E430 gearbox is stronger than E320's, and some clutch base kit are differ than E320's,,

*yeah, you can take parts from E430 & put it to E320 gearbox..!

ZAYED,,

The Shoeman

Thank you for the reply.

So, will the 722.664 fit into the E430 4Matic straight away or will I have to swap parts? Which parts are physically different that would have to be changed?

Once the transmission from the E320 4Matic is in the E430 4Matic, as long as I don't "drive it like I stole it", it should be ok, right? Or will I have to "drive it like Gramma" or else it will break?


Can I assume the same scenario with the NON 4Matic transmissions will hold true? 2000 E320 transmission into a 2001 E430?

Ultimately, will I need to do anything with the TCU? Will I need to grab the donating vehicle's TCU and put it into the receiving vehicle?

Thank you again.


Bill

cm60k

AnyTime,

sure, any 722.6 can be switchable to each other, E320 gearbox is little bit weaker than E430 one, but it will work well,

4matic & non-4matic sharing the same theory, as "transfer power train",


Nothing to do with TCU, TCU got a direct relation with diff. Ratio, and RPM range signal to the ECU data/file,,

just use your Exist one even if you change or swap the gearbox assembly..!

ZAYED,,

Wndr_Wgn

To drag up an old thread, I’m interested in doing an engine swap on my new to me e320 4matic wagon.

it hasn’t been treated the best, tranny only had 1 fluid change in 180k miles and fluid is very dark.

Interesting to learn that the tranny is stronger for the e430, was not aware of that, very good to know.

Do you know if I would be able to find an e430 4matic sedan and swap the engine and tranny/transfercase into the e320? Are the differentials the same?

also, I used to have an s211 e500 4matic. Any chance you know if that system would be retrofittable?

Thanks so much for any insight you can offer.

ilove190evo

I am new to MB world, so my knowledge and experience is from other car. With that been said,

I worked on more than a few old(?) American V-8s. Both GM and Ford. Most of the overdrive trans I've worked on were 4-speed. Most of the time, both V-6 and V-8 cars share the same trans designation, but internal is different between them. Naturally, V-8 cars have more beefier internal. Clutch packs, spring rate, valve body, just to name a few. Also, electronics/computer are different due to different engine, which mean different shift point. Torque converter are different as well due to different stall speed. Most, again, most of the time, they'll have same rear differential, but gear ratio, along with internal ratio are different. Sometimes, trans ratio may be same, but rear is definitely different.

Again, above experience and knowledge are from American V-8s, so I'm not sure if it applies to MB.

Wndr_Wgn

Thank you for your input! I had a feeling the differentials were different. I think it could be safe to assume they would be as well on Mercedes. More to research on the feasibility of a 4matic engine swap.

thabkd again for sharing your experience ilove190evo!