This helps prevent the transmission from slipping under heavy load, such as racing or towing, and is highly recommended for any high performance application. Why Put A Corvette Servo In A 4l60e? The corvette servo will give your 4l60e 50% more apply pressure, meaning it will allow for a much firmer shift. What does putting a Corvette servo in a 4l60e do? By “firming up” each shift, a performance gain is actually achieved. There are different types of shift kits designed for different tasks, but generally speaking, a performance-oriented shift kit is designed to provide firmer shifts by changing the flow of transmission fluid through the valve body. If the target does not match the current position, it turns on the motor to turn until the two match. Use more clutches and larger gear band servo pistons.Ī servo motor contains electronics that are internally turning a DC motor on and off as necessary to hold the target position.Stamped Steel forward clutch apply pistons.Use a larger clutch with an input drum reinforcement sleeve.Rebuild with an improved, thicker sun shell.Lay out the important parts on an assembly bench.This happens by reducing the slippage and shift overlap that is inherently built into a transmission to create those smooth shifts.Īs stout as they are, eventually you reach the inherent limits that a 4L60E or 4L65E transmission is designed to withstand, which is around 700 hp at Level 4. Installing a shift kit can also help your transmission last longer. The transmission is connected to the wheels via an output shaft, which meshes to the axles in a variety of ways, depending on your car’s design. This type of transmission also uses a servo piston to activate and deactivate the bands. It tightens to engage the gears, and loosens to release them. The corvette servo will give your transmission 50% more apply pressure, which is just what you need to keep from burning your transmission up under heavy load situations. The servo is used to apply the 2-4 band in the transmission.Ĭorvette Servo (part number NTP-K51828C) Right away you will notice faster and firmer 1-2 and 2-3 shifts. From the factory, the truck 4L60e’s have a smaller servo. The purpose of the vette servo mod is to allow the transmission to shift more quickly and efficiently from first to second gear. What does a Corvette servo do for a transmission?
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