Performance World 60170-CNC SB Ford CNC Aluminum Heads (bare)

SB Ford 170cc (with 5-Axis CNC Bowl Blend) Aluminum Cylinder Heads. 2.02" intake, 1.60" exhaust, 60cc combustion chambers. Manufactured from A356-T6 aluminum. Each head comes with a detailed flow sheet. Ready for assembly and sold as pairs. Download Data here - DOWNLOAD Download Installation Tech here - DOWNLOAD NOTE: Not for use with factory pistons. Check piston to valve clearance in all applications.