COMP Cams 1411-1 - Magnum Roller Rocker, CB / FC / FF

COMP Cams Magnum Roller Rocker Arm, 1.72 ratio, 7/16" Stud Diameter for Big Block Chevy, Single Piece These Magnum Roller Rocker Arms for Big Block Chevy 396-454 applications are the ultimate street rocker. With a 7/16" stud diameter and 1.72 ratio, they are designed for serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed from 8620 chromemoly steel, which is a superior material that will not flex and assures maximum lift. Their roller tip reduces friction, while stiff design and superior ratio accuracy yield more effective valve lift. With a 15 to 30 horsepower increase over other rocker arms, Magnum Roller Rockers are perfect for performance applications with less than 350 lbs. open spring pressure. Don't accept inferior products or cheap knock-offs, look for the COMP Cams logo stamped into the underside of every Magnum Rocker. For Big Block Chevy applications, 7/16" stud, 1.7 ratio; Roller tip reduces friction while stiff design and superior ratio accuracy yields more effective valve lift; 15 to 30 horsepower increase over stock rocker arms; Use in any applications with less than 350 lbs. open spring pressure; Made from 8620 chromemoly steel that will not flex