Product Description
Brian Tooley Racing BTR Platinum .660" Dual Spring Kit for LT4 Engines
Complete LT4-Specific Dual Spring Kit | Titanium Retainers | Drop-In Upgrade
The Brian Tooley Racing Platinum .660" Dual Spring Kit for LT4 engines is specifically engineered to deliver maximum valvetrain control in high-performance supercharged LT4 applications. This complete drop-in kit includes LT4-specific titanium retainers, precision-matched dual valve springs, locators, seals, locks, and shims, making it a fully comprehensive upgrade for aggressive camshaft builds. Designed to work with stock rocker arms, this kit ensures consistent valve control, reduced valve float, and long-term durability in demanding high-RPM and boosted environments.
Key Features & Benefits
- LT4-Specific Performance Design – Engineered specifically for Gen V LT4 engines, ensuring proper fitment and optimal valvetrain geometry in high-performance applications.
- .660" Lift Capability – Supports aggressive camshaft profiles while maintaining excellent valve control under high boost and high RPM conditions.
- Lightweight Titanium Retainers – Includes LT4-specific titanium retainers to reduce valvetrain mass and improve stability at higher engine speeds.
- Complete Drop-In Kit – Includes springs, retainers, locators, seals, locks, and shims for a fully integrated installation with stock rocker arms.
- Proven BTR Platinum Spring Technology – Delivers reliable performance across a wide range of builds, from aggressive street setups to high-horsepower forced induction applications.
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
Complete Kit Components
- SP001-1 BTR Platinum Dual Springs – Qty 16
- SR006-1 LS9 Titanium Retainers – Qty 8
- SR008-1 LT1 Titanium Retainers – Qty 8
- SL520045-1 Locators (.045") – Qty 8
- SL520060-1 Locators (.060") – Qty 8
- VS LS Valve Seal Kit (Blue) – Qty 16
- VL 7° 8MM Valve Locks – Qty 32
- SS015-1 Shims (.015") – Qty 8
Fitment
- Fits Gen V LT4 Engines Only
Important Notes
- This kit is designed specifically for LT4 engines and will NOT fit other Gen V LT engines.
- For non-LT4 Gen V applications, use BTR SK007.
- Designed for use with stock rocker arms and factory-style valve guide setups.
