COMP Cams CL42-433-11 Xtreme Energy Hydraulic Roller Cam Lifter Kit for Oldsmobile - 236/242 and 260-455

The COMP Cams CL42-433-11 Xtreme Energy Hydraulic Roller Cam and Lifter Kit delivers a proven performance upgrade for Oldsmobile 260-455 cubic inch engines. Designed for street/strip enthusiasts who demand improved throttle response, stronger mid-range torque, and increased top-end power without sacrificing street manners, the Xtreme Energy series represents one of COMP Cams' most popular grinds for high-performance builds.

This kit features a 236/242 duration hydraulic roller camshaft ground to COMP Cams' exacting specifications. The hydraulic roller design reduces valvetrain friction compared to flat-tappet cams, improves oil retention on the lobe, and allows for more aggressive lobe profiles — all while retaining the convenience of a self-adjusting hydraulic lifter system.

Kit Contents:

• Xtreme Energy hydraulic roller camshaft (236/242 duration)
• Hydraulic roller lifters
• COMP Cams assembly lube
• Decals
• Installation instructions

Camshaft Specifications:

• Advertised Duration (Intake/Exhaust): 236°/242°
• Duration at 0.050" Lift (Intake/Exhaust): 194°/200°
• Valve Lift with 1.6 Rocker Ratio (Intake/Exhaust): 0.488"/0.510"
• Lobe Separation Angle (LSA): 110°
• Camshaft Type: Hydraulic Roller
• Application: Oldsmobile V8 260, 307, 330, 350, 400, 403, 425, 455 cu. in.

The Xtreme Energy series is engineered to work with a broad range of supporting modifications including performance intake manifolds, cylinder heads, and exhaust systems. This cam delivers a noticeable performance increase over stock while remaining compatible with power brakes and producing a distinctive performance idle. COMP Cams part number CL42-433-11 is a complete kit solution, making it ideal for engine rebuilds and performance upgrades alike.