Comp Cams GM LS7 & Gen V LT Trunnion Upgrade Kit

COMP Cams is proud to announce another industry first: a bolt-in-ready Bushed Shaft Rocker System for GM LS engines. Thanks to innovative engineering, this patent pending Bushed Shaft Rocker System increases valve train stability and durability while decreasing deflection and providing bolt-in convenience for LS1, LS3 and LS7 cylinder heads. The COMP Cams Bushed Shaft Rocker System improves valve train stability and durability by securing all eight rocker arms onto a single rocker shaft. Thin tri-layer rocker arm bushings reduce rocker arm deflection and eliminate the high Hertz loading that can occur in needle bearing equipped rockers. Reduced rocker deflection increases valve train stiffness, ensuring that your LS is more efficient and durable under high loads. COMP Cams engineers worked to ensure long-term valve train durability by perfecting rocker to valve stem geometry and provisioning for supplementary pressurized oiling via threaded ends on the rocker shafts. Additionally, each rocker shaft is Plasma Nitrided, further increasing the system’s durability even when used with aggressive solid roller valve trains. The COMP Cams Bushed Shaft Rocker System for GM LS delivers high-level valve train stability, precise fitment, truer valve train geometry and increased load-bearing capacity in a package that is ready to bolt in that requires no machine work.
This pair of Max-Lift BSR Shaft Mount Rockers for Cathedral Port LS engines is a bolt-in rocker upgrade that requires no machine work to install. Clears factory valve covers while greatly increasing valvetrain rigidity.
See 1982-16 for LS3/L92. See 1983-16 for LS7.
Chevrolet: Corvette 05 – 07 6 L Engine, GMC: Savana 2500 03 – 05 5.3 L Engine, Chevrolet: Express Pasajeros 17 – 18 6 L Engine, Chevrolet: LCF 3500 16 – 17 6 L Engine, GMC: Savana 3500 10 – 19 6 L Engine, Chevrolet: Suburban 3500 HD 16 – 19 6 L Engine, GMC: Savana 2500 10 – 19 6 L Engine, Chevrolet: Express 3500 10 – 17 4.8 L Engine, Chevrolet: Express 2500 10 – 19 6 L Engine, Chevrolet: Express 3500 03 – 05 5.3 L Engine, GMC: Savana 1500 03 – 07 5.3 L Engine, Chevrolet: Suburban 16 – 18 6 L Engine, Chevrolet: Express 2500 03 – 05 5.3 L Engine, Chevrolet: Suburban 14 – 16 5.3 L Engine, Chevrolet: Suburban 2500 10 – 13 6 L Engine, Chevrolet: Express 1500 03 – 07 5.3 L Engine, Chevrolet: Express 2500 10 – 17 4.8 L Engine, GMC: Sierra 11 – 16 5.3 L Engine, GMC: Sierra 1500 10 – 13 4.8 L Engine, Isuzu: Ascender 03 – 06 5.3 L Engine, Chevrolet: Trailblazer 06 – 08 5.3 L Engine, GMC: Sierra 3500 HD 10 – 19 6 L Engine, GMC: Yukon 00 – 14 5.3 L Engine, Chevrolet: Silverado 2500 06 – 13 4.8 L Engine, Chevrolet: Cheyenne 14 – 16 6.2 L Engine, Chevrolet: Suburban 1500 00 – 14 5.3 L Engine, Cadillac: Escalade ESV 03 – 06 6 L Engine, Chevrolet: Silverado 3500 15 – 18 6 L Engine, GMC: Yukon XL 1500 00 – 14 5.3 L Engine, GMC: Yukon 08 – 13 6 L Engine, Saab: 9-7x 05 – 09 5.3 L Engine, Buick: Allure 08 – 09 5.3 L Engine, Chevrolet: Impala 06 – 09 5.3 L Engine, GMC: Envoy XUV 04 – 05 5.3 L Engine, Chevrolet: Avalanche 1500 02 – 06 5.3 L Engine, GMC: Savana 3500 10 – 17 4.8 L Engine, Chevrolet: Tahoe 08 – 13 6 L Engine, GMC: Sierra 1500 99 – 13 5.3 L Engine, Chevrolet: Tahoe 00 – 14 5.3 L Engine, Cadillac: Escalade 06 – 13 6 L Engine, Buick: LaCrosse 08 – 09 5.3 L Engine, Chevrolet: SSR 03 – 04 5.3 L Engine, Chevrolet: Silverado 1500 99 – 13 5.3 L Engine, Chevrolet: Express Cargo 17 – 17 6 L Engine, Pontiac: Grand Prix 05 – 08 5.3 L Engine, Chevrolet: Silverado 2500 99 – 16 5.3 L Engine, GMC: Savana 2500 10 – 17 4.8 L Engine, GMC: Envoy XL 03 – 06 5.3 L Engine, Hummer: H3T 09 – 10 5.3

Made from a high quality aluminum alloy with a tensile strength of 80,000 psi‚ Needle bearing trunnions allow valve spring pressures of up to 350 lbs. open pressure, making Aluminum Roller Rocker Arms a good choice for many street applications.
Don’t cut up your new rocker arms to clear a wider diameter valve spring. Instead, use these .100″ offset shafts to shift your Chrysler 273-360 rocker arms inboard to pick up clearance on 1.550″ and larger valve springs.