For Ford engines, these 8620 chrome-moly steel rockers can also be used on heads with guide plates. For applications with less than 350 lbs. of open spring pressure.
- Requires screw-in studs and guide plates
- Requires .150 in. longer pushrod
Perfect for street performance, our 8620 chromemoly steel Magnum roller tip rockers can handle up to 350 lbs of spring pressure. These 1442 rockers feature a 1.6 ratio for 3/8" stud AMC 290-401, non-rail Ford 289-351W and Olds 260-455.
Designed with the serious performance enthusiast in mind...
Magnum Roller Rocker Arms are the ultimate street rocker arms, helping your engine make more power and last longer.
Made from 8620 chromemoly steel, Magnum Roller Rocker Arms are stronger than die cast aluminum or stamped steel rockers. Their stiffness guarantees maximum lift because the arms will not flex.
When your car's rocker ratio is off, you won't get maximum horsepower from the engine. Some rockers are as much as .040'' short on lift while Magnum Roller Rockers are dead-on each time.
Magnum Roller Rockers make between 15 and 30 horsepower over other rockers because, combined with their stiff design, the roller tips reduce friction, yielding more effective valve lift.
The roller tip design reduces friction by not scrubbing the valve end or pushing the valve stem hard against the valve guide, which extends rocker life.
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