Ultimate street rocker designed for serious performance enthusiastsConstructed from 8620 chromemoly steel, a superior material that will not flex and assures maximum liftRoller tip reduces friction while stiff design and superior ratio accuracy yields more effective valve lift15 to 30 horsepower increase over stock rocker armsUse in any applications with less than 350 lbs. open spring pressure
These Magnum Roller Rocker Arms for Chevy V8 265-400 and V6 200-262 applications are the ultimate street rocker. With a 3/8 inch stud diameter and 1.6 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 pounds. 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.