SBC Platinum R/A Kit - 1.6 Ratio

The SBC Platinum R/A Kit - 1.6 Ratio from Yella Terra is specifically designed for small-block Chevy engines, enhancing valve actuation geometry and mechanical advantage to improve performance. This rocker arm assembly is ideal for both enthusiasts and professional builders looking to optimize valve lift and duration without the need for full cylinder head replacement. Whether for a street engine, weekend warrior, or competition platform, this kit is a crucial investment in engine tuning.

The 1.6 ratio specification means that each unit of camshaft lift is amplified 1.6 times at the valve, which increases valve opening distance and enhances cylinder filling efficiency at higher RPMs. Yella Terra's platinum-grade construction provides superior hardness and wear resistance compared to standard cast-iron alternatives, reducing friction and extending service life during sustained high-RPM operation. The design minimizes deflection, ensuring consistent valve timing and lift across the RPM range, which is essential for maintaining peak power delivery and engine reliability.

This kit is particularly beneficial for SBC engine builders who are upgrading from factory-stamped steel rockers or replacing worn components in high-mileage engines. It is designed for easy installation with your existing camshaft and pushrod setup, making it a straightforward bolt-on solution for performance enhancement.