LS6 Camshaft Assembly

The LS6 Camshaft Assembly from Chevrolet Performance (part number 12565308) is a hydraulic roller camshaft engineered for the GM LS-series engine platform. This high-performance camshaft delivers 0.550 inches of lift on both intake and exhaust lobes, with a 204-degree intake duration and 218-degree exhaust duration, producing a 117.5-degree lobe separation angle that balances scavenging efficiency with fuel economy characteristics. Built to OEM specifications and tolerances, this assembly provides a direct-fit solution for LS engine builds without requiring custom valve train modifications.

The hydraulic roller design reduces friction and wear compared to solid roller or flat-tappet profiles, extending valve train longevity during sustained high-RPM operation. The 0.550-inch lift specification maintains adequate clearance with factory LS cylinder heads while the 117.5 LSA centers the power band in the mid-range, making this camshaft suitable for street-driven vehicles that require responsive throttle characteristics and pump gas compatibility. The modest 218-degree exhaust duration minimizes reversion and heat rejection, keeping coolant temperatures stable under typical driving conditions.

This camshaft is specified for stock and near-stock LS engine applications, including LS1, LS2, LS3, and LS9 variants. Builders upgrading from factory camshafts to this assembly will observe improved low-end torque and mid-range responsiveness without sacrificing drivability on the street. The part is sold as a camshaft-only assembly; installation requires standard valve train components (lifters, pushrods, rocker arms) and professional engine machine work. Proper degree wheel timing and valve lash adjustment during installation ensure optimal performance and reliability.