Even after a complete rebuild, internal leaks and normal case wear can effect a transmission's lube flow and operating pressure, changing the original calibrations and drastically reducing overall performance and longevity.  In addition, flaws and oversights in the manufacturer's initial design do not usually show up until a particular transmission model has been on the road for a few years. 

Superior Transmission Parts' Shift Correction Packages are designed and engineered to compensate for transmission wear and to address OEM design oversights.  Utilizing a combination of recalibrated springs, redesigned valves and field tested fixes, Shift Correction Packages can help clean up most common shifting problems and improve overall performance by working to bring the unit back to and beyond original factory specifications. 

Just go to the Shift Correction Package for additional information.   

GM

FORD

CHRYSLER

K404-670

IMPORTS