Valve body: W124 6.0L AMG Hammer

[yao500e]

Hello folks,

Does anyone know specifically what AMG did to upgrade the 722.3 valve body?

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The primary difference in the AMG Hammer's valve body is that it was re-engineered and re-valved by AMG to handle the increased power and torque from the modified M117 V8 engine, ensuring stronger and significant power handling. While the base transmission was a standard unit, AMG's modifications were crucial for adapting the gearbox to the higher torque and performance demands of the Hammer's custom engine, ensuring power could be transmitted effectively and reliably to the wheels.

Why the change was necessary

• Engine Power:
  The AMG Hammer was built with an upgraded and often bored-out 5.6L or 6.0L M117 V8 engine, producing hundreds more horsepower than the original Mercedes-Benz engine.
  
  
• Torque Management:
  The increased power and torque from the engine placed significant strain on the stock four-speed automatic transmission.
  
  
• Tuned for Performance:
  A re-engineered valve body was needed to precisely control the transmission's internal hydraulic functions, allowing it to shift faster and more decisively to match the engine's performance, rather than being overwhelmed or shifting sluggishly.
  

In summary, the valve body change was not a replacement of the entire transmission, but a critical modification to allow the existing four-speed gearbox to cope with and effectively deliver the substantially increased performance of the AMG-tuned V8 engine.

 

[gsxr]

That's an AI-generated summary, right? It's a lot of words that don't really say anything useful. Probably because there are zero public details about the AMG VB modifications, so AI had to hallucinate a bunch of generalities.

What AMG most likely did was replace select springs with different ones that were stiffer, same as the common K1 spring "upgrade" for standard 722.3... possibly different for multiple items though, not just K1. Which exact springs were replaced, and what spring rate? Only AMG knows, and maybe @jhodg5ck.

Required reading here about what's possible with the 722.3 if you know what you are doing.

 

[weide1]

and maybe @jhodg5ck.

Too bad Jono is not active on this forum anymore.

 

[yao500e]

That's an AI-generated summary, right? It's a lot of words that don't really say anything useful. Probably because there are zero public details about the AMG VB modifications, so AI had to hallucinate a bunch of generalities.

What AMG most likely did was replace select springs with different ones that were stiffer, same as the common K1 spring "upgrade" for standard 722.3... possibly different for multiple items though, not just K1. Which exact springs were replaced, and what spring rate? Only AMG knows, and maybe @jhodg5ck.

Required reading here about what's possible with the 722.3 if you know what you are doing.

yes. Gemini google generated automatically. I did find another article that stated it is a basic 4 speed with a beefed up AMG valve body.
There is something very cool about a mechanical hydraulic automatic transmission, I have to admit. Imagine if the AMG hammer had a 2.87 rear gears as opposed to 2.24. @gsxr

DRIVETRAIN
Transmission...............4-spd automatic
Gear ratios: 4th(1.00).....2.24:1
3rd(1.44).................3.23:1
2nd(2.41).................5.40:1
1st(3.68).................8.24:1
Final drive ratio..........2.24:1