The all new 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. Â PAC Racing is a leader in valve spring technology, so it was only natural to team up with the best in the valve spring industry for our latest offering in a valve spring kit! Â 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. Â These valve springs will offer excellent durability and stability and will work well with factory-style lifters. Â PAC polishes the valve springs, which helps to increase the overall life of the springs. Â This greatly reduces the chances of spring fatigue and failure. Â PAC’s polishing process is completed without losing any pressure in the valve springs, so you maintain all of the capabilities of the non-polished version.
Kit includes: Spring Seats, Valve Seals, polished Dual Springs, and Titanium Retainers (utilizes GM factory valve stem locks, not included); This kit will NOT use the TSP integrated seat and seal. Â The seat and seal will be separate.
Specs:
Install Height: Â 1.810″
Closed Spring Pressure: 160 lb. @ 1.810″ Installed Height
Open Spring Pressure:Â 415 lb. @ .660″ lift
Maximum Spring Lift: .660″
Coil Bind 1.015″
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