COMP Cams LSR Cathedral Port Hydraulic Roller Camshaft Duration GM LS

The COMP Cams LSR Cathedral Port Hydraulic Roller Camshaft line is made for GM LS Gen III/IV engines running cathedral port cylinder heads, such as the LS1, LS2 and LS6 designs. Each grind is built around the flow characteristics of those heads. The line covers a range of builds, from 4.8L and 5.3L engines to 400+ cubic inch combinations.

Key Features:

• Hydraulic roller design: Roller lifter profiles give the valvetrain aggressive lobe action with the convenience of a hydraulic lifter setup.
• Cathedral port specific grinds: Lobe timing and lift are matched to cathedral port airflow for strong mid-range torque and a wide usable power band.
• Billet steel construction: Machined from billet steel for durability in street, street/strip and performance builds.
• 3-bolt cam gear attachment: Made for GM LS Gen III/IV 3-bolt engines.
• Multiple grind options: Choices range from low-RPM torque grinds for heavier vehicles to larger grinds for all-out power, each with its own duration, lift and lobe separation.
• Made in the USA: Engineered and manufactured by COMP Cams.

Upgraded valve springs are required with these camshafts. Larger grinds also benefit from supporting airflow upgrades on the intake and exhaust sides. Some applications are legal only for uncontrolled vehicles or closed-course competition use, so check the emissions information for your specific part number.

COMP Cams is a long-established name in valvetrain and camshaft engineering. The LSR Cathedral Port series gives LS builders a proven way to improve power and throttle response over a stock cam.