COMP Cams 19021-1 - Rocker Arm, Ultra Gold ARC BBC 7/16" 1.7

COMP Cams Ultra-Gold Aluminum Roller Rocker Arm, 1.7 Ratio, 7/16" Stud Diameter for Big Block Chevrolet, Single Piece These COMP Cams Ultra-Gold Aluminum Roller Rocker Arms with a 7/16" stud diameter and 1.7 ratio are designed for Big Block Chevrolet 396-454 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. For Big Block Chevy Applications with 7/16" studs, 1.7 Ratio; 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;