TCI TH400 Valve Body Performance Improver Kit ' 66 and Newer Howe Racing Enterprises longevity is decreasing

longevity is decreasing

This controller can make extremely quick compensations to the timing while maintaining accuracy to within 1

125 in Bore

x 16" Tall

TCI TH400 Valve Body Performance Improver Kit ' 66 and Newer Howe Racing Enterprises longevity is decreasing66 '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. This value priced kit allows you to upgrade your transmission for improved performance in street, off road and towing applications. The Valve Body Performance Improvement Kit is designed to change the shift action to a more positive shift. Reduced shift