COMP Cams Rocker Arm Ultra Gold Arc LS1

COMP Cams is well-known for making performance engine parts, and their Ultra-Gold ARC Series rocker arms are a solid choice for anyone looking to improve their LS engine's valvetrain. These are non-adjustable, pedestal-mount rocker arms designed to handle more load than stock, especially if you're running higher-lift cams or stiffer valve springs. They fit a wide range of GM LS-based vehicles, including popular models like the Chevrolet Silverado 1500 and GMC Sierra 1500.

What sets these apart is the CNC-extruded aluminum body, which offers increased strength and stiffness compared to stock rockers and many other aftermarket aluminum designs. This is crucial for maintaining valve control under higher spring pressures. You also get an upgrade from the stock slider tip to a roller tip, which helps reduce friction and wear. The trunnion package is larger than stock and features captured needle bearings to help prevent failure, a common weak point in some setups. These are a bolt-down design, similar to OEM LS rockers, making installation straightforward, though aftermarket valve covers or spacers might be needed.

This particular part number, 19024-1, is the 1.72 ratio version. COMP Cams also offers a 1.82 ratio if you're looking to increase valve lift even further without a full cam swap. These are built in the USA after FEA analysis and come with a limited lifetime warranty on the rocker bodies against breakage.