Speedmaster PCE261.1001.01 Compatible with Chevy SBC 350 1.5 Ratio 3/8 Aluminum Roller Rocker Arms Set

Speedmaster 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: You need Studs and Guide Plates to Run Roller Rockers .