COMP Cams SK42-433-11 Xtreme Energy 236/242 Hydraulic Roller Camshaft SK-Kit for Oldsmobile 260-455

The COMP Cams SK42-433-11 Xtreme Energy Hydraulic Roller SK-Kit is a complete camshaft upgrade package engineered for Oldsmobile 260-455 cubic inch V8 engines. Designed for street/strip performance enthusiasts, this kit delivers a significant improvement in throttle response, mid-range torque, and top-end power over stock camshaft profiles — all while retaining excellent drivability for street use.

The Xtreme Energy camshaft series features 236/242 degrees of advertised duration and is ground on COMP Cams' tight lobe separation angles to maximize cylinder pressure and produce a noticeable, aggressive idle quality. Hydraulic roller lifters reduce valvetrain friction compared to flat-tappet designs, improving efficiency and extending component life without the need for break-in oil additives.

Kit Includes:

• Xtreme Energy hydraulic roller camshaft (236/242 advertised duration)
• Hydraulic roller lifters
• Timing chain set
• Assembly lube
• COMP Cams decals
• Installation instructions

Camshaft Specifications:

• Advertised Duration (Intake/Exhaust): 236°/242°
• Duration at 0.050" (Intake/Exhaust): 194°/200°
• Valve Lift with 1.6:1 Rocker (Intake/Exhaust): 0.477"/0.480"
• Lobe Separation Angle: 110°
• Cam Type: Hydraulic Roller
• Application: Oldsmobile 260, 307, 330, 350, 400, 425, 455 V8

As a SK-Kit (Small Kit), this package provides everything needed for a core camshaft installation, making it an ideal choice for engine builders looking for a reliable, all-in-one solution. COMP Cams' Xtreme Energy series is one of the most popular performance camshaft lines available, trusted by builders seeking real-world street performance gains with proven dyno-tested profiles.