Product Description
Brian Tooley Racing .660" Dual Valve Spring Kit with Titanium Retainers for GM LS Engines
Fits All 15° LS Cylinder Heads | Ideal for Aftermarket Camshaft Upgrades
The Brian Tooley Racing Platinum .660" Dual Spring Kit is one of the most trusted valvetrain upgrades for GM LS engines running aftermarket camshafts. Designed as a true drop-in solution for LS engines using stock rocker arms, this complete kit delivers exceptional valve control, stability, and durability at higher RPM and increased lift. Featuring high-quality dual valve springs paired with lightweight titanium retainers, this setup reduces valvetrain mass while maintaining the spring pressure required for aggressive cam profiles and high-performance street or race applications.
Key Features & Benefits
- .660" Lift Capability: Supports aggressive aftermarket camshaft profiles while maintaining excellent valve control and stability at elevated RPM.
- Dual Spring Design: Provides increased open pressure and improved resistance to valve float compared to single spring setups.
- Lightweight Titanium Retainers: Reduces valvetrain mass for quicker valve response, improved durability, and extended component life.
- Complete Drop-In Kit: Includes polished dual springs, matching titanium retainers, locators for stock guides, locks, and seals—no additional parts required.
- Trusted BTR Performance: Proven reliability in street, strip, and track-driven LS builds worldwide.
Valve Spring Specifications
- Seat Pressure: 155 lbs @ 1.780"
- Open Pressure: 380 lbs @ 1.180"
- Maximum Open Load: 400 lbs @ 1.130"
- Coil Bind Height: 1.070"
Engine Compatibility
- Fits all 15° LS cylinder heads
- LS1, LS2, LS3, LS4, LS6
- L76, L92, L99, L33
- LQ4, LQ9, LSA
