The servo piston features D-rings in place of the OE seal rings for improved sealing during apply and release.
#Jegs 700r4 corvette servo upgrade install
This servo is easy to install and can be done with the transmission in the vehicle. 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. This servo will give your transmission 50% more apply pressure, just what you need to keep from burning your transmission up under heavy load situations.
Also, since the servo isn't traveling as far before it applies the band, the 1-2 and even the 3-4 shift will be much quicker. Right away you'll notice faster and firmer 1-2 shifts and even slightly better 2-3.
#Jegs 700r4 corvette servo upgrade upgrade
This servo is a must for any performance, towing, RV, or off-road transmission, but would be a nice upgrade for any 700-R4 or 4L60E. This is way too much travel, it should be closer to 1/16". If you push in on your servo cover, you'll notice that it moves in around 1/8"-1/4". It's almost more important to get the right clearance as it is to change to the Corvette servo. This package includes a longer than stock servo pin to get your band adjusted to the right clearance. New USA made Corvette servo piston kit with a longer Servo Pin for the GM 700R4, 4L60, 4L60E, 4L65E, 4L70E, 4L75E THM700-R4 MD8