Thread: torque converter

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I have a question, exactly what is the stall speed of a torque converter and why is it relevant?

http://www.tciauto.com/tech_info/tor..._explained.htm

............................little long winded but maybe it'll make since, ..........
hope it helps, and next time try a search and Cwhat'ya get ? .

I've been doing searches but they keep messing up

ya , sometime there are a few bugs here at CHR.

did that help ya out ?

T L

Hmmmm makes sense. but everyone talks about a 2400 stall converter. That seems awefully high so the turbine has to reach 2400 rpm to over come the weight of the car and the resting resistance of the stator and the weight of the car. That seems like the engine wouldn't be worth much say for instance at lower rpms

Firebird, the whole idea is to get the motor into its power range. A stock converter is fine for Mrs. O'Malley to go to the grocery store, because the stock cam makes power from idle to about 4,200 rpm's. When you install a higher performance cam, you move the power band up in the rpm range, so now, the stock converter is still locking up down low where there's no horsepower and the motor won't pull the hat off your head. For instance, if you install a cam that makes power from 3,000 to 6,500, then you need to get the r's to 3,000 pretty quickly so that you'll begin moving the mass.

Originally posted by firebird45331
That seems like the engine wouldn't be worth much say for instance at lower rpms

no that would make it worth more! just sitting still

I think that the one thing you need to keep in mind is that gearing plays a big part in considering stall. Keep in mind that if your cruising speed is below your stall speed your transmission can overheat