Edelbrock Cylinder Head - Performer RPM High-Compression - Assembled - 2.190 / 1.880 in Valve - 290 cc Intake - 100 cc Chamber - 1.550 in Springs - Angle Plug - Aluminum - Big Block Chevy - Each-60439--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO