COMP Cams SK42-423-11 Xtreme Energy 224/230 Hydraulic Roller SK-Kit for Oldsmobile 260-455

The COMP Cams SK42-423-11 is an Xtreme Energy hydraulic roller camshaft Small Kit (SK-Kit) engineered for Oldsmobile 260-455 cubic inch V8 engines. Ground to the XR276HR profile, this retro-fit hydraulic roller cam delivers strong street performance with a broad, usable power band suited to high-performance builds running headers, low rear-end gears, and a 2,200+ RPM stall converter.

Camshaft Specifications:

• Grind Number: XR276HR
• Cam Style: Hydraulic Roller (Retro-Fit)
• Advertised Intake Duration: 276°
• Advertised Exhaust Duration: 282°
• Duration at .050" Lift – Intake: 224°
• Duration at .050" Lift – Exhaust: 230°
• Intake Valve Lift: 0.505"
• Exhaust Valve Lift: 0.505"
• Lobe Separation Angle (LSA): 110°
• Basic Operating RPM Range: 1,800–5,600
• Camshaft Material: Billet Steel
• Gear Attachment: 1-Bolt
• Engine Family: Oldsmobile 260–455 c.i. V8 (1967–1990)

SK Small Kit Includes:

• Camshaft (XR276HR grind)
• Hydraulic Roller Lifters
• Timing Chain Set
• Assembly Lube
• Decals and Instructions

COMP Cams component-matched SK-Kits are fully tested and assembled to ensure every piece works together as a precision-engineered valvetrain system. Note: Valve springs are required and sold separately. This product is C.A.R.B. exempt for racing and off-road use only; it is not legal for use on emission-controlled, on-road vehicles.