SBC LS1 Hydraulic Cam XR265HR-14

The SBC LS1 Hydraulic Cam XR265HR-14 from COMP CAMS is a purpose-built hydraulic roller camshaft engineered for small-block Chevrolet and LS1-platform engines seeking aggressive yet streetable performance. This camshaft is designed for builders and enthusiasts who want substantial valve lift and duration without sacrificing hydraulic roller reliability or drivability. Whether you're building a high-output 350, 327, or updating a classic small-block with modern LS1 technology, this cam delivers the mechanical edge needed for serious horsepower gains while maintaining practical engine characteristics for daily use or weekend warrior duty.

The XR265HR-14 uses COMP CAMS' proven hydraulic roller design, which eliminates the wear associated with solid-roller rockers while maintaining tight valve control and precise timing events. The camshaft profile is optimized for mid-range torque and peak horsepower delivery, with a lift specification and duration window that balances vacuum retention for power steering and brake assist with aggressive top-end breathing. Hydraulic roller lifters automatically compensate for thermal expansion and valve train wear, ensuring consistent performance across thousands of miles without manual adjustment or shim changes—a critical advantage over solid lifter designs in street applications.

This camshaft is ideal for small-block Chevy builders using hydraulic roller valvetrain components, including compatible block casting, compatible heads with proper valve spring pressure (minimum 350–375 lbs installed), and a matching hydraulic roller lifter set. Installation requires precise deck height measurement, push-rod length verification, and careful valve-to-piston clearance checking to avoid catastrophic engine damage. Pair the SBC LS1 Hydraulic Cam XR265HR-14 with quality valve springs, push rods, rocker arms, and a thorough dyno tune for maximum reliability and power output in your next build or rebuild project.