Product Description
Brian Tooley Racing BTR Platinum .660" Dual Valve Spring Kit with Steel Retainers
Drop-In .660" Spring Upgrade for GM LS Engines | Ideal for Aftermarket Camshafts
The Brian Tooley Racing Platinum .660" Dual Spring Kit with steel retainers is one of the most proven and widely used valvetrain upgrades for GM LS engines running aftermarket camshafts. Designed as a true drop-in solution for most factory LS cylinder heads, this kit delivers excellent valve control, durability, and reliability at higher RPM and increased lift. Featuring polished dual valve springs paired with high-strength steel retainers, this setup is ideal for aggressive street, strip, and track-driven LS builds that demand consistent performance without unnecessary complexity.
Key Features & Benefits
- .660" Lift Capability: Supports aggressive aftermarket camshaft profiles while maintaining stable valve control at elevated RPM.
- Dual Spring Design: Increased seat and open pressure significantly reduces valve float compared to factory single-spring setups.
- High-Strength Steel Retainers: Provides excellent durability and long service life for demanding street and performance applications.
- Complete Drop-In Kit: Includes polished dual springs, steel retainers, locators for stock guides, locks, and seals—no additional components required.
- Proven BTR Performance: A trusted choice for camshaft upgrades across thousands of LS engine builds.
Valve Spring Specifications
- Spring Diameter: 1.300"
- Seat Pressure: 155 lbs @ 1.780"
- Open Pressure: 380 lbs @ 1.180"
- Maximum Load: 400 lbs @ 1.130"
- Coil Bind Height: 1.070"
Engine Compatibility
- Fits most factory LS cylinder heads
- 4.8L, 5.3L, 5.7L, 6.0L, 6.2L LS Engines
- LS1, LS2, LS3, LS4, LS6
- L76, L92, L99, LM7, LQ4, LQ9, L33, LSA
Notes:
- LS7 cylinder heads require the use of a .030" shim (See BTR LS7 Steel Spring Kit or BTR LS7 Titanium Spring Kit).
- This kit will not work on LS9 heads.
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Great product
Great product
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Worked just as expected!
Michigan Motorsports is quickly becoming my go to for parts. Great service, value and quick shipping.
