Pro Shaft Rocker Kit SBC 1.60/1.60 AFR 227/235

The JESEL Pro Shaft Rocker Kit SBC 1.60/1.60 AFR 227/235 is a complete roller rocker arm assembly engineered for small block Chevy high-performance applications. This shaft-mounted rocker system delivers a 1.6:1 ratio on both intake and exhaust sides, providing mechanical advantage across the entire valve event while maintaining full roller contact with your camshaft. Built from aluminum and finished in natural, this 16-piece kit mounts directly to AFR Eliminator 227 and 235 cylinder heads, offering proven reliability in competition and street performance engines.

The 1.60:1 rocker ratio on both intake and exhaust sides optimizes valve lift and duration characteristics without requiring camshaft changes. Full roller design eliminates friction losses that plague traditional roller rocker systems, improving overall valvetrain efficiency and reducing parasitic power loss. Shaft-mount geometry keeps the rocker arms preloaded and stable under high RPM conditions, critical for preventing valve float and ensuring consistent opening and closing timing across your powerband. The aluminum construction balances weight savings with structural rigidity needed for aggressive valve spring pressures and sustained high-RPM operation.

This rocker kit suits builders targeting AFR Eliminator headed small block Chevy engines in both street and competition use. Common applications include carbureted performance builds, fuel-injected street engines, and track-focused race motors where valvetrain reliability and efficiency directly impact horsepower and torque delivery. The complete 16-piece set includes matched pairs for a full small block installation, eliminating compatibility guesswork and ensuring consistent performance across all eight cylinders.

JESEL rocker systems are recognized in the small block Chevy performance community for precision machining and consistent quality control. Shaft-mounted designs have become the standard in serious performance builds where valvetrain stability directly influences cylinder head efficiency and engine reliability at sustained high RPM.