Ford SB 289 302 351 Windsor 1.6 3/8" Stainless Steel Roller Rocker Arm Set These can be used on

These can be used on std or aftermarket plenum manifolds

When building rear-ends for race cars or trucks

which is much stronger than stock steel and mates better with an aluminum case

and have TIG-welded seams

Available with show polished or satin (unpolished) finish

Ford SB 289 302 351 Windsor 1.6 3/8" Stainless Steel Roller Rocker Arm Set These can be used onSpeedmaster Stainless steel rollers are manufactured from heat treated stainless steel and alloy steel tip rollers. Speedmaster roller rockers are available in various ratios, so you are good to go. They feature greater strength and durability, capable of withstanding valve spring load up to 600lbs.