TCI TH400 Valve Body Performance Improver Kit ' 66 and Newer R07C155XL Performer Series

Performer Series

1958-1959 GMC PM151

#72975 features a pre-assembled ready to bolt-on direct port nitrous system out-of-the-box

Sold individually OEM 4 Leaf Design

lines and cables when exposed up to 1800F direct heat/2500F radiant

TCI TH400 Valve Body Performance Improver Kit ' 66 and Newer R07C155XL Performer Series66 '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