Speaking of torque converters, Level 10 builds its own. The angle and clearance between the vanes is important, as it affects the stall speed of the converter. Often the vanes in factory converters are only attached at one point to save time. Level 10 firmly attaches the vanes to keep them in place for the life of the converter. In lockup converters, the company also uses a better-than-stock friction material to prevent slippage no matter how heavy the drivetrain and tires are.