COMP Cams 19043-16 - Rocker Arms, Ultra Gold ARC SB F 3/8" 1.6

COMP Cams Ultra-Gold Aluminum Roller Rocker Arms, 1.6 Ratio, 3/8" Stud Diameter for Small Block Ford These COMP Cams Ultra-Gold Aluminum Roller Rocker Arms with a 3/8" stud diameter and 1.6 ratio are designed for Ford V8 289-302-351W applications. The new modern design features of these Ultra-Gold Rockers are proven to withstand extremely aggressive spring pressure and valve lift. Designed specifically for high performance street and race engines, the Ultra-Gold Aluminum Rocker Arms are precision CNC-machined to strict tolerances. Developed to meet the demands of professional engine builders, these rockers include features never before possible in an aluminum rocker arm. CNC-machined, lightweight design removes weight and yields unrivaled quality and ratio accuracy; Designed for high performance street and race engines; Precision-sorted trunnion bearings withstand elevated valve spring pressure and valve lift; Additional clearance, up to 1.650" O.D. valve spring;