Olds V8 Xtreme Hyd. Cam XE274H-10

The COMP CAMS Oldsmobile V8 Xtreme Hydraulic Camshaft (part number 42-224-4) is a high-performance hydraulic flat tappet cam engineered for street and strip applications demanding aggressive power delivery across a wide RPM band. This is not a stock replacement—it's a purpose-built upgrade for builders and enthusiasts committed to extracting maximum output from Oldsmobile V8 engine platforms while maintaining the reliability benefits of hydraulic lifter technology.

The XE274H-10 specification delivers 274 degrees duration on the intake side and 286 degrees on the exhaust, with a 110-degree lobe separation angle optimized for torque production and valve overlap control. Valve lift reaches 0.520 inches (intake) and 0.523 inches (exhaust), providing the flow potential necessary for performance heads and manifold combinations. The 1800–6000 RPM operating range ensures this cam stays effective whether cruising at highway speeds or winding up for competition or high-performance driving. Hydraulic flat tappet design eliminates the complexity of adjustable rocker geometry while offering excellent durability for extended use, provided valve train components are properly matched and clearances maintained per COMP CAMS specifications.

This camshaft suits builders working with carbureted or fuel-injected Oldsmobile V8 engines targeting increased horsepower and torque without sacrificing street manners. The Xtreme Energy line focuses on responsive mid-range power and aggressive top-end characteristics—ideal for hot rods, performance cruisers, and weekend track applications. Proper installation requires verification of piston-to-valve clearance, lifter preload adjustment, and compatibility with intake and exhaust valvetrain components. Comprehensive technical support and application guidance are standard with COMP CAMS products.