Product Description
Brian Tooley Racing BTR Platinum .660" Dual Spring Kit for Gen V LT Engines
Fits 2014+ LT1 L83 L86 L84 L87 L8T 5.3L 6.2L | Complete Drop-In Dual Spring Kit
The Brian Tooley Racing Platinum .660" Dual Spring Kit is one of the most proven and trusted valvetrain upgrades in the performance market for Gen V LT engines. Whether you're building a mild street truck, a high-horsepower naturally aspirated combination, or a serious boosted setup, this spring kit is designed to keep the valves under control and the valvetrain stable at all times. This complete drop-in kit is designed for 2014+ LT1, L83, L86, L84, L87, and L8T engines using stock rocker arms and stock valve guides. It includes dual springs, titanium retainers, locators for stock guides, locks, seals, and shims for a complete installation-ready package.
Key Features & Benefits
- Proven BTR Platinum Performance – One of the most trusted dual spring kits in the aftermarket, built to support everything from mild daily driver cams to high-horsepower naturally aspirated and boosted LT combinations.
- .660" Lift Capability – Designed to handle aggressive camshaft profiles while maintaining excellent valve control and valvetrain stability in high-RPM and high-load applications.
- Complete Drop-In Kit – Includes dual springs, titanium retainers, stock-guide locators, valve seals, locks, and shims so you have the critical components needed for a proper installation.
- Works with Stock Rocker Arms – Engineered for compatibility with factory-style LT rocker arms, making it a straightforward valvetrain upgrade for many street and race builds.
- Built for Gen V LT Engines – Designed specifically for 2014+ LT1, L83, L86, L84, L87, and L8T engines using stock valve guides, delivering reliable fitment and performance.
Kit Includes
- SP001-1 Springs – Quantity 16
- SR008-1 Titanium Retainers – Quantity 16
- SL505060-1 Stock Valve Guide Locators – Quantity 16
- VS LS Seals – Quantity 16
- VL7°8MM-1 Locks – Quantity 32
- SS015-1 Shims – Quantity 16
Spring Specifications
- 155 lbs @ 1.780" – Seat Pressure
- 380 lbs @ 1.180" – Open Pressure
- 400 lbs @ 1.130" – Additional Open Pressure Reference
- 1.070" – Coil Bind
Key Fitments
- 2014+ LT1 / L83 / L86 Engines – Drop-in spring kit for Gen V LT 5.3L and 6.2L applications using stock rocker arms and stock valve guides.
- L84 / L87 / L8T Applications – Compatible with later Gen V LT truck engine combinations requiring a proven dual spring upgrade.
- Not for LT4 – Will not fit LT4 applications; use BTR SK008 for LT4-specific setups.
