Description

Magnum Roller 1.7 Ratio Rocker Arm for Ford 289-351W w/ 3/8″ StudThis Magnum Roller Rocker Arm for Ford V8 289-351W (Rail Type) 1968-89 Applications is the ultimate street Rocker. With a 3/8″ Stud diameter and 1.7 ratioit is designed for Serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed from 8620 chromemoly Steelwhich is a superior material that will not flex and assures maximum lift. Their Roller tip reduces frictionwhile stiff design and superior ratio accuracy yield more effective valve lift. With a 15 to 30 horsepower increase over other Rocker armsMagnum Roller Rockers are perfect for performance Applications with less than 350 lbs. open spring pressure. Don’t accept inferior products or cheap knock-offslook for the COMP Cams logo stamped into the underside of every Magnum Rocker.