TQ converter in depth
^ ha ha 
coachk is right - no further explanation is necessary. A 3500 stall will mean you can move further into the rpm band before the car will lurch forward as you describe. Obviously your engine will be in a better position to provide better torque output at that rpm...
No he was talking about getting an upgraded tc set to a 3500 stall.
The higher stall upgrade will allow the tc to slip...
coachk is right - no further explanation is necessary. A 3500 stall will mean you can move further into the rpm band before the car will lurch forward as you describe. Obviously your engine will be in a better position to provide better torque output at that rpm...
Originally Posted by marques1
how the hell would my brakes hold a stall of 3500 rpms i guess i was not pushing down hard enough on my brakes or something?
The higher stall upgrade will allow the tc to slip...
So the TC is the reason when I'm driving my Jeep SRT8 I have to dig into the gas a little bit before it actually goes anywhere? is that the feeling of a 3000rpm+ stall?
Originally Posted by Jtrain
So the TC is the reason when I'm driving my Jeep SRT8 I have to dig into the gas a little bit before it actually goes anywhere? is that the feeling of a 3000rpm+ stall?
Last edited by helldorado; Sep 22, 2007 at 08:30 AM.
Some more reading from EDGE Racing's website.
What is Torque Converter Stall?
The easy answer is: The RPM a torque converter will allow the engine to attain with a given engine torque input.
How is Torque Converter Stall Measured?
That's where the confusion begins between the racer and the high-performance torque converter builder. Stall is measured in three different ways. TRUE, BRAKE and FLASH Stall. The only true way to set stall is using TRUE stall math.
What is TRUE Stall?
True stall is measured with the transmission locked (Trans brake) and the drive shaft still. The throttle is then fully depressed and held to obtain the holding RPM of the torque converter. This is the "TRUE" Stall.
What is Foot Brake Stall?
This is attained with the transmission in gear and the brakes depressed fully. Now slowly apply the accelerator. The RPM the engine reaches the moment before the tires spin is known as the "BRAKE" Stall. BRAKE Stall is not a consistent way to measure your stall converter and has many variables. This method will be lower then TRUE stall by 400-800 RPM.
What is FLASH Stall?
Flash stall is generally read while the car is in motion. While rolling at a slow speed the throttle is depressed fully to see where the RPM will flash (or peak). This method will not be true if tires spin or car is rolling too fast. Due to the turbine already turning in the torque converter we end up with less torque multiplication. This will give you a lower stall reading of between 200 and 600 RPM under the converters TRUE stall in the same application.
The easy answer is: The RPM a torque converter will allow the engine to attain with a given engine torque input.
How is Torque Converter Stall Measured?
That's where the confusion begins between the racer and the high-performance torque converter builder. Stall is measured in three different ways. TRUE, BRAKE and FLASH Stall. The only true way to set stall is using TRUE stall math.
What is TRUE Stall?
True stall is measured with the transmission locked (Trans brake) and the drive shaft still. The throttle is then fully depressed and held to obtain the holding RPM of the torque converter. This is the "TRUE" Stall.
What is Foot Brake Stall?
This is attained with the transmission in gear and the brakes depressed fully. Now slowly apply the accelerator. The RPM the engine reaches the moment before the tires spin is known as the "BRAKE" Stall. BRAKE Stall is not a consistent way to measure your stall converter and has many variables. This method will be lower then TRUE stall by 400-800 RPM.
What is FLASH Stall?
Flash stall is generally read while the car is in motion. While rolling at a slow speed the throttle is depressed fully to see where the RPM will flash (or peak). This method will not be true if tires spin or car is rolling too fast. Due to the turbine already turning in the torque converter we end up with less torque multiplication. This will give you a lower stall reading of between 200 and 600 RPM under the converters TRUE stall in the same application.
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