Magnum Hyd. Roller Cam - SBC 280HR

The Magnum Hydraulic Roller Cam - SBC 280HR is engineered for small-block Chevrolet engines seeking serious mid-range torque and reliable daily-driven performance. Built for enthusiasts and professional mechanics who demand a cam profile that delivers responsive power without sacrificing engine longevity, this roller cam eliminates the wear patterns inherent to flat-tappet designs. Whether you're building a street cruiser, restomod, or moderate-performance truck engine, the 280HR profile balances aggressive valve timing with practical hydraulic operation for plug-and-play installation on any SBC platform.

Hydraulic roller technology ensures consistent valve lift and duration across the RPM band while self-adjusting lifters maintain zero lash automatically—eliminating the guesswork of manual adjustment. The 280HR specification indicates a moderate lift and duration sweet spot optimized for SBC applications ranging from 5,000 to 6,500 RPM peak power zones. Unlike traditional flat-tappet cams, the roller design reduces friction losses and distributor-to-cam wear, translating to extended service intervals and lower maintenance overhead. The precision-ground lobe profile and premium casting materials resist scuffing and ensure smooth valve transitions that protect your valve train under sustained load.

This cam excels in street and strip applications where owners want tangible torque gains without forced induction or exotic fuel requirements. Mechanics and builders favor the Magnum Hydraulic Roller Cam for engine rebuilds because it pairs seamlessly with stock-bore small blocks and requires only standard timing cover clearance—no exotic valvetrain components needed. Compatible with all hydraulic roller-ready SBC blocks manufactured after the mid-1980s, installation is straightforward with any OEM or performance intake manifold. Pair it with a quality set of pushrods, lifters, and a serpentine belt upgrade for immediate, measurable improvements in throttle response and mid-range grunt.