Cylinder Head - NHRA Approved Performer RPM - Bare - 2.020 / 1.600 in Valve - 185 cc Intake - 64 cc Chamber - Angle Plug - Aluminum - Small Block Chevy - Each
Cylinder Head - Super 23 - Assembled - 2.020 / 1.600 in Valves - 195 cc Intake - 62 cc Chamber - 1.460 in Springs - Angle Plug - Aluminum - Small Block Chevy - Each
Cylinder Head - Enforcer - Assembled - 2.020 / 1.600 in Valves - 195 cc Intake - 64 cc Chamber - 1.290 in Springs - Angle Plug - Aluminum - Small Block Chevy - Each
Cylinder Head - NHRA Approved Performer RPM - Bare - 2.020 / 1.600 in Valve - 185 cc Intake - 64 cc Chamber - Straight Plug - Aluminum - Small Block Chevy - Each