Now you have nearly double the load capabilities of the stock transmission in overdrive. That, accompanied with the 20 percent wider band, will let you tow in overdrive with confidence. This servo has more holding force than the stock overdrive servo. It will supply the clamping force needed for these heavy units but without the excessively harsh shifts associated with the aftermarket “super servos.”įor Fourth (OD), we use the our Proprietary Performance Overdrive servo. This servo is the largest servo available from GM.
To compliment this, we use the Corvette servo. We use a heavy duty wide band for maximum hold in 2nd and 4th gear. These units feature a heavy duty 13-vane pump with full-time lube modification to keep the heat down, and a modified lockup valve to improve the lockup converter’s durability so you can tow confidently in overdrive. The shifts on these units are designed to take the abuse and work associated with these vehicles, but without the tire chirping shifts of our race and performance units. These were specifically developed for 4×4 vehicles. These units are built very similar to our Pro Race units, but the focus is on durability while maintaining reasonable shift quality.
It is ready to head to the mountains or play in the bog – your choice. It has slightly more aggressive shifts and more punch built in. This series is very similar to our Heavy Hauler, except it’s built with climbing and spinning in mind. Our Extreme 4X4 Series is ideal for rock and mud crawling. The PerformaBuilt Extreme 4X4 700R4 This Transmission has a Core Charge
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