For straight line guys, spending hundreds of dollars on something that doesn't give you any extra horsepower doesn't exactly seem like a good deal. Even a federal bean counter could figure that one ...

Conventional TH350 and TH400 converters are interchangeable. Some TH350s built since 1979 have used lockup torque converters. Due to differences in the stator-shaft spline count, conventional TH350 ...

This exploded view of a torque converter calls out the important converter components. On the far right is the impeller (A) that uses input power from the engine to impart fluid motion to the turbine ...