Set of COMP Cams 1.7 Ratio 3/8" Stud Magnum Roller Rocker Arms for 1968-1969 Mustangs with a 289, 302 or 351W Engine.These Magnum Roller Rocker Arms for Ford V8 289-302-351W (Rail Type) 1968-89 applications are the ultimate street rocker. With a 3/8" stud diameter and 1.7 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.
*Sold in a set of 16.
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Are these only for a rail type or can they be mounted on a stud.
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