The polished TSP .660" spring kit featuring PAC valve springs is the newest offering in valve spring technology offering the latest processes and material for maximum spring life. We have developed a .660" dual spring kit with the help of PAC Racing that still offers excellent valvetrain control, even for the more aggressive hydraulic roller camshafts. These valve springs will offer excellent durability and stability and will work well with factory-style lifters. PAC polishes the valve springs, which helps to increase the overall life of the springs. This greatly reduces the chances of spring fatigue and failure.
Texas Speed & Performance is proud to offer the latest version of the best dual valve spring kit on the market! This kit now includes our patent-pending Precision Race Components integrated seat and seal. You no longer have to worry about special installation tools for your valve seals, tearing a valve seal upon installation, or valve seals popping off! Our new integrated seat and seal will work with factory-size valve guides and CANNOT be used on any aftermarket bronze guide applications!
Note: Our dual valve spring kit utilizes GM factory valve stem locks, which are not included, Will not work on LS7, LS9, any Gen 5 LT1/4 engine applications, and most aftermarket cylinder heads with bronze guides
Valve Spring Specs:
Install Height: 1.810"
Closed Spring Pressure: 160 lb. @ 1.810" Installed Height
Open Spring Pressure: 415 lb. @ .660" lift
Maximum Spring Lift: .660"
Coil Bind 1.015"
What's Included In The Box?
American-Made PAC Racing Polished Dual .660" Lift Valve Springs
Precision Race Components Integrated Seat/Seal for Dual Valve Springs
Titanium Retainers
*Does not include valve stem locks
