Corvette servo 4l60e benefits4/2/2023 The servos in the 4L60 are located on the front passenger side of the tranny housing just above the oil pan. Without getting too technical, applying and releasing clutch packs determines power flow through the planetary gearset and the end result is 1st, 2nd, 3rd, and 4th gears. Servos are essentially aluminum pistons that apply and release the clutch band. Servo -a control system that converts a small mechanical motion into one requiring much greater power. Before I go any further, let me give a brief description of how servos work. In 2007, I installed aftermarket servos to improve shifting and prolong the life of the band and clutch packs. My intent is to share what I have learned about performance upgrades with other members who like myself were not aware. I don't consider myself to be an expert no doubt there are members who could take a 4L60 apart and put it back together blindfolded. I slowly began to realize that a 700R4 would last a long time if it wasn't abused and wasĪfter buying my Colly I would occasionally think about ways to improve the 4L60E in terms of durability. I got the tranny rebuilt (with a basic shift kit) and almost 200K miles later, it was still going strong. It had a new GM Goodwrench engine, but the 700 R4 tranny was on its way out. Eventually I ended up buying a used S-10 Blazer. While growing up and early on in my 'driving' years, I preferred manual trannys over automatics. It is easy to rebuild and can be strengthened to handle significant horsepower and torque. Although there are folks who hate the 4L60 with a passion and the 4L80 is recognized as a much stronger unit, the 4L60 has gained much fame in the performance and aftermarket arenas.
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