Tech Answer

How do I choose the correct torque converter?

If your vehicle has been modified to enhance performance, you probably need a torque converter with a higher stall speed. If the stall speed isn't high enough, the car won't be making power when you launch and you'll bog off the line. If your setup is really mismatched, the engine may want to stall whenever you attempt to shift into gear at idle. A higher-stall converter will improve acceleration by allowing the car to launch at an rpm where the engine is making the most power. To decide which converter is right for you, you'll have to look at the car's weight, braking system, engine displacement, and engine combination. Some converters are designed for high-revving lightweight cars. Some are designed for heavy cars that make a lot of bottom-end torque. The key is to match the converter to the engine and the entire vehicle.

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