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67-'69 C4 Valve Body Improvement Kit; The TCI Valve Body Improvement Kit for 67-69 C4 provides an improvement in upshift firmness, and also comes with the seals and gaskets needed for the project.

70-'82 C4 Valve Body Improvement Kit.; The TCI Valve Body Improvement Kit for 70-82 C4 provides an improvement in upshift firmness, and also comes with the seals and gaskets needed for the project.

82-'86 700R4 Valve Body Improvement Kit.; The TCI Valve Body Improvement Kit for 82-86 700R4 provides an improvement in upshift firmness, and also comes with the seals and gaskets needed for the project.

62-'73 Powerglide w/ Aluminum Case Valve Body Improvement Kit.; The TCI Valve Body Improvement Kit for 62-73 Powerglide provides an improvement in upshift firmness, and also comes with the seals and gaskets needed for the project.

66-'91 TH400 Valve Body Improvement Kit.; The TCI Valve Body Improvement Kit for TH400 provides an improvement in upshift firmness, and also comes with the seals and gaskets needed for the project.

Torqueflite/Torque Command 727 Valve Body Improvement Kit; The TCI Valve Body Improvement Kit for Torqueflite 727 provides an improvement in upshift firmness, and also comes with the seals and gaskets needed for the project.

Torqueflite 904/Torque Command 904 Valve Body Improvement Kit; The TCI Valve Body Improvement Kit for Torqueflite/Torque Command 904 provides an improvement in upshift firmness, and also comes with the seals and gaskets needed for the project.

68-'79 TH350 Valve Body Improvement Kit.; The TCI Valve Body Improvement Kit for 68-79 TH350 provides an improvement in upshift firmness, and also comes with the seals and gaskets needed for the project.

80-'84 TH350 Valve Body Improvement Kit.; The TCI Valve Body Improvement Kit for 80-84 TH350 provides an improvement in upshift firmness, and also comes with the seals and gaskets needed for the project.