The main question is that my transmission died, but I haven’t seen yet why that had happened.
I try to solve this, but know nothing in auto gearboxes.
The best way to buy another gearbox from any 500 engines

I want my car ride fast in couple of weeks so... what should I do guys?

Thanks for helping bears from Russia

 

depending on whats wrong with your trans, you could send it to renntech for a complete rebuild for around 2500$

 

That’s not a great some of money, and how I understand quality could be good. But I think that’s a huge time waste for me.
Maybe you know something about difference?

I know you ride on slk for quite a long time like all other senior members here

 

The SRT6 automatic is a Mercedes model and the N/A is a Chrysler model. The Chrysler version could not take the extra torque and horsepower....
Dennis
DT Menace

 

are you sure about that? i don't think so! n/a trans is a 722.6 with different clutch packs in it and a different tune on the tcu still mercedes

 

That's my impression also ....

 

I was told that both are Mercedes.
The SRT model is Mercedes made for the Crossfire (SLK)
The NA model is Mercedes made for Chrysler (lower quality materials)
Both use TCU from Mercedes (as mentioned, different tune)

My 2 cents

 

Thats nice, so I could use 722.6 I`ve just find one

 

Does there some special things in it which help to provide so much torque?

 

So from your viewpoint the black Crossfires have an even cheaper transmission.
The shop manual does not mention a different transmission for the SRT and na models, both appear to have the NAG1 auto box. The NAG1 box is the same one listed for the LX platform, 300's etc.
I would hope to hear from Rudy on this matter.
Just my 2 cents (Canadian)

 

722.5? i cant ever remember the proper #. its my old age kicking in!! cant type and think at the same time!

 

Been researching and found this thread. Did anyone find the specifics on the differences between the NA and SRT-6 Automatic transmissions?

 

They can be found in different cars.

 

The internals are different to accommodate the torque each transmission is made to handle. More clutches and beefier planetary in the SRT6 trans. The two are NOT interchangeable due to the variations in gear ratios.

 

in what mileage i must change oil in amg tranny? i have 99 miles on it and no change yet

 

99k miles ? i would change it .

 

I bet a dual transmission mod has never been done! After that, three! You can then switch between a stick, N/A auto, and SRT auto... Just think of the fun times at auto shows that car (or whatever it turns into) would bring!




.

 

Hi

The NA transmission is a 722.618 (W5A330) rated at 330Nm, the SRT6 transmission is a 722.633 (W5A580) rated at 580Nm.

The 722.633 transmission is used by Mercedes on M113 V8s and its M112 supercharged V6. The NA and SRT6 transmission have different gear ratios and can't be easily interchanged. The SRT6 transmission has a larger diameter driveshaft connection, to use it in an NA you need to change the connector on the transmission, or fit the front half of the driveshaft from an SRT6 (or an SLK32). The Transmission Control Units (TCUs) are also programmed differently. The TCU is programmed with the gear ratios and the diff ratio. If you fit a V8 transmission to your NA, you'll need to fit an SRT6 TCU and a SRT6 differential (3.07 ratio), you'll also have to recode your Engine Control Unit with the new diff ratio (ie. change it from 3.27 to 3.07). If you don't change the diff, then you'll have to get your existing TCU reprogrammed by a specialist (eg. Eurocharged) as this can't be done using the Mercedes Star Diagnostics software.

My advice is that if you've got a problem with your existing transmission in an NA Crossfire, then get it repaired or replace it with a Mercedes 722.618 transmission. To swap to a transmission from a Mercedes 5L V8 is a lot of work. If you have an SRT6, then no problem.