Someone educate me on torque convertors
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Senior Member
Joined: Nov 1999
Posts: 700
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From: Staten Island, NY
Someone educate me on torque convertors
1. what exactly do they do?
2. why do people replace them with different ones?
3. what is "stall speed"?
4 will replacing one on a basically stock 350tpi do anything?
Any info on them is appreciated.
2. why do people replace them with different ones?
3. what is "stall speed"?
4 will replacing one on a basically stock 350tpi do anything?
Any info on them is appreciated.
Supreme Member
Joined: Feb 2001
Posts: 1,730
Likes: 0
From: Webster, N.Y.
The Torque Converter is what allows you to sit in gear W/O the engine stalling, as a standard would. It also acts like a slipping clutch to get you going. The correct converter for the car will take advantage of the power band of the engine by having the correct stall speed.
The proper stall speed depends completely on the power band of your engine. This means that if you have an engine that starts to "pull" at say, 2100 RPM and you have a 1600 stall converter, your performance off of the line will not be at it's best. On the other hand if you put in a 2400 or 3000 stall you will be wasting expensive power, since the converter won't be passing tha maximum power to the tranny until later in the power band. In the example I used, a 2000 stall would be ideal since you will "flash" up a little bit on take off. You will then be at the optimum take off RPM. Sometimes too, people have the proper stall converter for the engine combo but have the wrong rear end gears to fully utilize the power.
[This message has been edited by transfixleo (edited August 10, 2001).]
The proper stall speed depends completely on the power band of your engine. This means that if you have an engine that starts to "pull" at say, 2100 RPM and you have a 1600 stall converter, your performance off of the line will not be at it's best. On the other hand if you put in a 2400 or 3000 stall you will be wasting expensive power, since the converter won't be passing tha maximum power to the tranny until later in the power band. In the example I used, a 2000 stall would be ideal since you will "flash" up a little bit on take off. You will then be at the optimum take off RPM. Sometimes too, people have the proper stall converter for the engine combo but have the wrong rear end gears to fully utilize the power.
[This message has been edited by transfixleo (edited August 10, 2001).]
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