May 31, 2009
A New Trick in the Bag: Additional 2nd Gear Servo Size for the 4L60-E
Gregg Nader
Sonnax 2nd Gear "Corvette" ratio servo kit 77701-04K provides increased apply area resulting in improved holding power for firmer 1-2 and 3-4 shifts in 4L60 (700-R4) and 4L60-E transmissions. The servo piston features D-rings in place of the OE seal rings for improved sealing during apply and release. This kit is compatible with Sonnax 4th Gear Super Hold dual servo kit 77767K.
May 31, 2009
Gregg Nader
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February 26, 2019
Maura Stafford
October 19, 2021
Maura Stafford