SBM Hyd Roller Camshaft Retro-Fit

The SBM Hyd Roller Camshaft Retro-Fit by Howards Racing Components is a precision-engineered upgrade designed for engine builders and performance enthusiasts seeking to convert older or stock hydraulic flat-tappet cam systems into modern roller cam technology. This retrofit solution eliminates the limitations of conventional flat-tappet designs—which rely on direct valve stem contact and suffer from higher friction and wear—by enabling the use of durable roller followers that reduce parasitic loss and extend engine longevity. Whether you're rebuilding a classic muscle car, modernizing a vintage street engine, or optimizing an existing performance platform, this camshaft retrofit bridges the gap between traditional and contemporary valvetrain architecture.

Engineered by Howards Racing Components—a recognized leader in camshaft innovation—the SBM Hyd Roller Camshaft Retro-Fit leverages hydraulic roller technology to deliver consistent valve timing with minimal maintenance. The hydraulic roller design automatically adjusts for thermal expansion and component wear, eliminating the need for frequent lash adjustments that plague solid roller and mechanical systems. The camshaft profile is optimized for small-block applications, providing improved lift characteristics and duration that maximize valve flow while maintaining compatibility with standard hydraulic lifter bores. The roller followers significantly reduce friction losses compared to flat-tappet designs, which translates to increased horsepower availability at the wheels and improved throttle response across the RPM band.

This retrofit is ideal for small-block engine applications where upgrading from antiquated flat-tappet geometry is necessary without requiring complete block modification or expensive billet conversions. Installation requires compatible hydraulic roller lifters and attention to pushrod length and rocker arm geometry to ensure proper valve clearance and stable operation. The compact dimensions—24 inches in length with a 2.75-inch bore diameter—fit standard small-block engine bays, making it an accessible upgrade for street engines, weekend track cars, and restoration projects seeking measurable performance gains. Verify camshaft core compatibility and lifter bore specifications before ordering to guarantee seamless integration into your specific engine platform.