torque and stall converters

[85burbanator]

what do they do? what are there benifits? i bought a blazer and it has a 2500 stall converter. i read z3pr's post about his trans woes and there was a post in there about how a trans with low fluid seems like it has a high stall converter. the motor has to wind up a bit to get the vehicle moving. should i replace it or does it actually help?

 

[big83chevy4x4]

it helps get the motor in the power band before the truck starts to move.

 

[85burbanator]

ahh. so it stalls the trans till the motor reaches 2500 rpms? thats what i figured. so technically its beneficial to the vehicle. ill be using it mostly for mudboggin and trail riding.

 

[sickquad]

I think "stall" means that it will stall the transmission on the initial launch until the motor reaches a certain RPM when there is resistance on the truck. The resistance would be your foot on the brake. Am I right?

I bet the answer is on howstuffworks.com.
-Chris

 

[big83chevy4x4]

[ QUOTE ]
so it stalls the trans till the motor reaches 2500 rpms?

[/ QUOTE ]
no, not exactly. stall speed is the fastest the engine can spin when the tranny is stoped in gear. (brakes applied) the higher the stall speed, the "looser" the converter is. a 2500 stall converter may start moving the truck at 1100, where a stock converter (1400-1600 stall) may start moving the truck at 600 rpm. the higher the stall the higher rpm is reached before the truck starts moving.

 

[k20]

if your running a higher stall converter you will need to be sure to run a fairly large cooler to dissipate all the heat the slippage will create.

 

[85burbanator]

deffinately getting a cooler. i thin i might run it for a while and replace it with a different unit.