Product Description

Brian Tooley Racing LS1 Rocker Arms with Upgraded Trunnion Kit Installed

Set of 16 All-New 1.7 Ratio Cathedral Port LS Rocker Arms | Choose TK001 V1 or TK002 V2 Trunnion Upgrade & Bolt Kit

Upgrade your compatible cathedral port LS valvetrain with Brian Tooley Racing LS1 rocker arms featuring an upgraded trunnion kit installed before shipment. This complete set includes sixteen all-new 1.7 ratio drop-in rocker arms built for compatible 4.8L, 5.3L, 5.7L, and 6.0L cathedral port LS combinations. Brian Tooley Racing (BTR) designed these rocker arms with an extended valve tip contact design, improved strength over factory-style rockers, and favorable moment of inertia for demanding high-RPM engine combinations. Choose the proven TK001 V1 captured needle-bearing trunnion system or step up to the TK002 V2 system with a 52100 heat-treated steel inner race and priority-fed self-oiling axle.

Key Features & Benefits

Complete Set of 16 New 1.7 Ratio Rocker Arms: Includes sixteen all-new Brian Tooley Racing rocker arms for one compatible V8 engine. The drop-in design makes this an ideal upgrade during heads and cam installations, engine rebuilds, and complete valvetrain refreshes.
Upgraded Trunnions Installed Before Shipment: Choose either the TK001 V1 or TK002 V2 trunnion system pre-installed in the rocker arms. This saves installation time and delivers a ready-to-install valvetrain upgrade for compatible LS cylinder heads.
Captured Bearing Design: Both trunnion options replace the factory limited-travel bearing arrangement with a captured roller-bearing design intended to retain the bearing assembly and support smooth rocker arm movement.
Extended Tip for Higher-Lift Camshaft Applications: The extended rocker tip design supports additional valve lift capability while helping improve valve tip durability in compatible performance valvetrain combinations.
Brian Tooley Racing Strength & RPM Capability: Brian Tooley Racing reports these rocker arms are 46% stronger than stock Chevrolet rockers in FEA analysis. Their favorable moment of inertia compared with roller-tip rocker designs supports high-RPM LS engine applications.

Brian Tooley Racing Trunnion Options

TK001 V1 Trunnion Kit: A proven captured needle-bearing trunnion upgrade designed to replace the factory rocker arm trunnion and bearing arrangement. The captured bearing design helps prevent loose needle bearings from escaping the rocker assembly.
TK002 V2 Trunnion Kit: Builds on the TK001 design with a pressed-on inner bearing race made from 52100 heat-treated bearing steel. It also features a self-oiling axle with priority oil feed directed to the trunnion assembly.

Kit Includes

(16) Brian Tooley Racing 1.7 ratio LS rocker arms with selected trunnion kit installed
Choice of TK001 V1 or TK002 V2 upgraded trunnion system
Choice of rocker arm bolt kit

Specs

Product Type: LS rocker arm and trunnion assembly set
Rocker Arm Ratio: 1.7 ratio
Quantity: Set of 16 rocker arms
Rocker Arm Design: Brian Tooley Racing all-new drop-in LS1-style rocker arms
Trunnion Options: TK001 V1 or TK002 V2
TK002 Inner Race Material: 52100 heat-treated bearing steel
Cylinder Head Compatibility: Compatible cathedral port LS heads
Bolt Kit: Choice of bolt kit available

Notes

Select Your Trunnion Option: Choose the TK001 V1 or TK002 V2 trunnion upgrade before adding the rocker arm set to cart. Both options arrive installed in the rocker arms.
Cathedral Port Applications Only: These rocker arms are designed for compatible cathedral port LS cylinder heads. Verify cylinder head style and existing rocker arm configuration before purchase.
Valvetrain Setup Must Be Verified: Confirm pushrod length, rocker-to-valve tip contact pattern, valve spring clearance, retainer-to-seal clearance, lifter preload, and overall valvetrain geometry during final assembly.
Camshaft Installation Recommendation: These rocker arms are an excellent upgrade to perform during camshaft, cylinder head, valve spring, or lifter service when the valvetrain is already accessible.
Installation Note: Follow the applicable engine manufacturer and camshaft manufacturer torque procedures and installation specifications for your engine combination.