Can someone explain to me in lamens terms what exactly a higher RPM stall converter does and how it works and what the benefits are? THanks

I posted this in drivetrain but I always get better answers here.

 

it acts like dumping the clutch at the stall speed under full throttle

 

Actually, all torque converters stall, or have a max realative speed that they will allow the engine to turn at realative to the transmission when, say, you have the brakes on and are about ready to launch the car down the 1/4 mile. The stall speeds of stock tc's for these cars are usually 1200 or 1800 rpm. When you make mods to the engine that alow it to make more horsepower at a higher rpm, its helpful to get a converter that will stall at 2200 rpm or higher. The reason for this is that the converter will allow the engine to turn at a greater speed realative to (faster then) teh transmission. By doing so, the engine gets into its power band faster Powerband in laymens terms, is the range of rpms that the engine makes power through. If you have a highly modded engine with a stock stall speed converter. The engine will bog down, stumble, and buck because the rpms are too low and the engine is too far out of its power band. Having a high stall speed converter alows the engine rpms to come up to a high value quickly, thereby allowing the engine to get into its power band sooner.

 

teh simple explanation of how a higher stall speed works is that it lets teh car start moving using a stronger portion of the engines power band. it is not liek a clutch dump or anything, the convertor will always sort of slip to teh stall speed(think of sitting on a steep hill and easing into teh gas, the car feels liek you are creeping the clutch). by using a stronger part of teh power band you increase initial; acceleration, better 60ft if you hook, which leads to better et's.

later
tim

 

so how do you utilize it... like hold on the brake and step on the gas until you get the rpm that yours stall is then let off the brake?

Thanks for the info...

nj this isnt a dig or anything but whats with "teh"

 

it utilizes itself. a higher rpm stall convertor is built that way. you will be able to foot brake it to a higher rpm or you can jsut floor it and see a higher rpm. that is the way it is built.

later
tim

ps teh is me not being a very good typer....lol

 

awesome thanks for the info.

 

they are SWEET...definitely makes the car more fun to drive...

-B

 

what stall are you guys with 305tbi's running.