Chevy SBC 283 305 327 350 400 1.5 Ratio 3/8 Aluminum Roller Rocker Arm Set W/Posi Locks COLOR MAY VARY

Rocker Color May Vary....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