Pro Shaft Rocker Kit BBC 1.70 /1.70 Brodix

The Pro Shaft Rocker Kit BBC 1.70 / 1.70 Brodix is a complete rocker arm assembly engineered for high-performance Big Block Chevy engines running Brodix BB-3Xtra cylinder heads. This full-roller shaft-mount rocker system is purpose-built for marine and automotive applications where reliability, consistent valve actuation, and durability under sustained load matter most. Whether you're powering a custom performance boat or a street-strip engine, this kit eliminates the guesswork of individual component selection by delivering a factory-matched set of 16 rockers ready for installation.

Built from lightweight yet rigid aluminum, the Pro Shaft Rocker Kit features a 1.70-to-1.70 mechanical advantage ratio that maximizes valve lift and duration without sacrificing stability or introducing unwanted harmonics. The full-roller design minimizes friction at the valve stem contact point, reducing parasitic drag and enabling faster valve transitions—critical for maintaining consistent engine performance across a wide RPM band. Shaft-mount construction centralizes load distribution across the cylinder head, delivering superior control and repeatability compared to stud-mounted alternatives. The natural aluminum finish resists corrosion in marine environments while maintaining the clean, professional appearance demanded by high-end engine builds.

This rocker kit is the go-to choice for serious builders and marine engine technicians who demand OEM-quality fitment and proven performance. The complete set of 16 rockers ensures matched characteristics across all cylinders, eliminating variation that can lead to compression loss or uneven combustion. Installation on Brodix BB-3Xtra heads is straightforward for experienced builders, and the kit's modular design allows for future adjustments or ratio changes without replacing the entire assembly. At 22.4 lbs, the aluminum construction keeps overall engine weight down—a meaningful advantage in marine applications where fuel economy and responsiveness directly impact on-water performance.