Ultralite Roller Rocker System 1.6:1 Ratio

The Yella Terra YT6669 is an ultralite roller rocker arm, shaft, and pedestal system engineered for specific V6 engines. Featuring a 1.6:1 ratio, these shaft mount rockers utilize 5/16" pushrods and are designed for an easy, direct bolt-on installation without the need for guide plates. This exclusive Ultralite design offers significant weight reduction, boasting 50% less nose weight compared to the factory L67 components. The robust construction and design have proven reliable and durable since 1983. On average, these roller rockers can yield power gains of approximately 20 horsepower and 20 foot-pounds of torque, enhancing engine performance.