Speedmaster PCE261.1256 Fits Ford SB 289 302 351 Windsor 1.7 7/16" Self Align Aluminum Roller Rocker Arm Set

PCE Aluminum Roller Rockers are extruded from 6061 T6 Aluminum. The larger needle bearing fulcrum can withstand valve spring loads up to 600lbs, while the extruded body has a tensile strength over 60,000 PSI. Ideally suited for use with Solid / Mechanical flat tappet and Hydraulic Roller Cams. They feature very precise valve operation, horse power increase of 10-15, increases valve train life dramatically, acceleration is more responsive, oil temp will run approximately 5-10 degrees cooler NOTE: Rockers are designed to eliminate need for guide plate. Perfect for mild street application where guide plates are not desired.