The Texas Speed & Performance LT1 steel rocker arm kit features steel rocker arms that offers better strength than the factory setup with a roller tip for reduced wear and friction on the valve tip. They are a great option for a quality set of aftermarket rocker arms without adding all of the unnecessary valvetrain weight that some of the other rockers on the market have. They will come standard with the TSP trunnion upgrade kit installed that provides quality bearings for a long life.