GM 4L60 700R4 4L60E Transmission Corvette Servo Piston Kit TransGo (7-2P) 1982+
Delivery time
You will receive your package in 2–5 business days within the contiguous U.S.
Delivery time
You will receive your package in 2–5 business days within the contiguous U.S.
Brand: TransGo
Other Part Number: 74905BK 7-2P
Type: Servo
Interchange Part Number: K77895B
Manufacturer Warranty: Unspecified Length
Fitment Type: Direct Replacement
Items Included: Piston, Piston Housing, seals and o-rings
Manufacturer Part Number: 7-472
Surface Finish: New
Drive Type: 4WD,AWD,RWD
Material: Aluminum
Performance Part: Yes
The TransGo 7-2P Corvette servo piston assembly fits 1982 to 2015 General Motors vehicles equipped with 700R4, 4L60/E, 4L65E and 4L70E automatic transmissions. From the factory, the 700R4 and 4L60E transmissions were equipped with 4 different servo sizes based on application. The Corvette-type piston was primarily found in the tuned, port-injected Corvette as well as the high performance Camaro and Firebird.
The TransGo 7-2P servo has the largest 2nd apply surface area of all the original equipment servos. Consequently, this servo provides a shorter, firmer 1-2 shift and with an increased apply area, provides the 2-4 band greater torque capacity in second gear only. Furthermore, the differential area between the band apply area and the release side of the servo piston alters the 3-4 clutch accumulation rate making the 2-3 shift firmer. Finally, this servo is ideal for high-performance applications and is fully compatible with our entire line of SHIFT KIT® Valve Body Repair Kit and Reprogramming Kits™.
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