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TSP Gen 5 LT1/L83/L86 .660" Dual Spring Kit w/ PAC Springs, Titanium Retainers, & PRC Integrated Seat/Seal
The all new TSP Gen 5 LT1/L83/L86 .660" spring kit featuring PAC valve springs and PRC integrated seat/seal is the newest offering in valve spring technology offering the latest processes and material for maximum spring life.
The dual valve springs used in this kit feature a proprietary spring that was developed specifically for the Gen 5 6.2L LT1 engine that requires a taller installed height than the typical LS engine.
These are NOT the same springs used in our LS dual valve spring kits, but they do use the same technology and polishing technique that is exclusive to PAC Racing valve springs! 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.
Kit includes PRC Integrated Spring Seats & Valve Seals, PAC Racing Gen 5 LT1-Specific Polished Dual Valve Springs, and Titanium Retainers (utilizes GM factory valve stem locks, not included)
Install Height: 1.900"
Closed Spring Pressure: 160 lb. @ 1.900" Installed Height
Open Spring Pressure: 406 lb. @ .650" lift, 425 lb. @ .700" lift
Recommended Maximum Spring Lift 0.660"
Coil Bind 1.09"