LS Hyd Roller Cam 3-Bolt .621/.604 111 Degrees

The LS Hyd Roller Cam 3-Bolt .621/.604 111 Degrees by CAM MOTION INC is a precision hydraulic roller camshaft engineered specifically for GM LS-series engine builds. This is a dedicated performance component designed for builders seeking elevated valve lift and aggressive duration characteristics in naturally aspirated or forced-induction LS platform applications. The 3-bolt mounting configuration confirms compatibility with early to mid-generation LS blocks where this fastening standard is the requirement.

The core specifications—0.621-inch intake lift, 0.604-inch exhaust lift, and 111-degree lobe separation angle—define a profile optimized for mid-range torque and peak horsepower delivery in the 3500–6700 RPM band. The hydraulic roller design eliminates the need for manual valve lash adjustment and provides consistent operation across throttle transitions, a critical advantage in street or strip applications where reliability matters. Duration figures of 287 degrees intake and 299 degrees exhaust indicate an aggressive but manageable profile suitable for both carbureted and fuel-injected LS engines. Buyers should confirm that existing intake manifold, cylinder head, and valve train components can accommodate the valve lift and timing characteristics this cam delivers.

This camshaft is specified for builders targeting LS engine upgrades where stock cam aggression is insufficient—typical applications include street performance builds, drag racing, and engine swaps where increased air velocity and improved cylinder filling are objectives. The part is shipped as a single unit; buyers are responsible for verifying 3-bolt block compatibility before purchase. Installation requires proper break-in procedures and lifter pre-oiling to maximize camshaft and hydraulic roller lifespan.

LS-series camshaft selection demands precision matching of lift, duration, and lobe separation to intended engine displacement, fuel delivery method, intake design, and redline target. This CAM MOTION profile represents a proven intermediate step between stock and extreme profiles, positioning it as a practical choice for builders balancing drivability with measurable performance gains.