BTR V2 Trunnion Kit LS Review – Premium Rocker Arm Upgrade for LS Engine Builders
The BTR V2 Trunnion Kit LS (TK002) is an engine valvetrain upgrade designed to improve rocker arm pivot support in compatible GM LS engines. Replacing the factory rocker arm needle-bearing arrangement with a trunnion-style conversion can help address a potential valvetrain failure point, particularly in engines exposed to higher RPMs, performance camshafts, and increased spring pressures. This kit is worth considering for performance enthusiasts, engine builders, and automotive professionals seeking additional valvetrain reliability.
Key Specifications
Brand: BTR (Brian Tooley Racing)
Product Type: LS Engine Rocker Arm Trunnion Conversion Kit
Model Number: TK002
Version: V2 Premium Trunnion Kit
Engine Compatibility: Listed for LS1, LS3, 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L applications, subject to rocker arm design
Application: Rocker arm pivot and valvetrain upgrade
Installation: Requires rocker arm disassembly and proper trunnion conversion procedures
Main Features
1. Upgraded Trunnion Design
The BTR V2 kit replaces the factory-style rocker arm pivot bearing arrangement with a trunnion conversion designed for improved support. This can help reduce the risk associated with needle-bearing failure, where loose bearing components may cause serious engine damage.
2. Designed for LS Performance Applications
Compatible LS engine families are widely used in street cars, trucks, muscle cars, and performance builds. The kit is intended for suitable rocker arm configurations and can be a useful upgrade for engines running performance camshafts or other valvetrain modifications.
3. Supports High-Performance Valvetrain Setups
Performance engines may operate at higher RPMs and use valve springs with greater pressure than stock configurations. A properly installed trunnion upgrade can help improve rocker arm pivot reliability under demanding conditions, although it does not eliminate every possible valvetrain failure.
4. Premium BTR Performance Engineering
Brian Tooley Racing specializes in aftermarket engine and valvetrain components. The V2 trunnion kit is designed for enthusiasts and professional builders who want to reinforce a critical rocker arm component as part of a broader engine reliability or performance upgrade.
Performance
Performs exceptionally well for:
LS engine builds using performance camshafts.
Compatible LS1, LS3, 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L engine projects.
Street performance vehicles requiring dependable valvetrain components.
Engine rebuilds and preventative valvetrain maintenance.
Performance applications where rocker arm pivot reliability is a priority.
Actual results depend on engine condition, rocker arm compatibility, installation quality, valve spring pressure, and operating RPM. A trunnion kit is a supporting reliability modification rather than a direct horsepower upgrade.
Pros
Designed to address a known potential weakness in factory-style rocker arm pivot bearings.
Suitable for a range of compatible LS engine applications.
Useful for performance camshaft and upgraded valve spring builds.
Supports preventative valvetrain maintenance.
Manufactured by a recognized aftermarket LS performance brand.
Can complement a comprehensive engine reliability upgrade.
Cons
Requires mechanical skill and specialized installation procedures.
Compatibility depends on the exact rocker arm design, not just engine displacement.
Does not directly guarantee additional horsepower or torque.
Incorrect installation can compromise valvetrain reliability.
Buyers should confirm the kit's included hardware and fitment before ordering.
Who Should Buy This?
Ideal for:
LS engine builders: Professionals assembling or refreshing compatible GM LS engines.
Performance enthusiasts: Owners upgrading camshafts, valve springs, or other valvetrain components.
Automotive repair specialists: Technicians addressing rocker arm pivot reliability during engine service.
Final Verdict
The BTR V2 Trunnion Kit LS (TK002) is a worthwhile component to consider when improving rocker arm pivot reliability in a compatible LS engine. Its main benefit is addressing the potential problems associated with the factory needle-bearing arrangement, making it particularly relevant to performance-oriented builds and engines with upgraded valvetrain components.
Before purchasing, verify compatibility with your specific rocker arms and engine configuration, and follow the manufacturer's installation instructions. For LS enthusiasts looking to reinforce valvetrain reliability as part of a properly planned build, this premium trunnion conversion kit is a practical upgrade to evaluate.
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