Cylinder Head - Thumper - Assembled - 2.020 in / 1.600 in Valve - 185 cc Intake - 62 cc Chamber - 1.460 in Springs - Angle Plug - Aluminum - Natural - Small Block Ford - Each
Cylinder Head - The Hammer - Assembled - 2.080 / 1.600 in Valves - 205 cc Intake - 60 cc Chamber - 1.580 in Springs - Aluminum - Small Block Ford - Each
Cylinder Head - Twisted Wedge - Assembled - 2.020 / 1.600 in Valves - 170 cc Intake - 61 cc Chamber - 1.460 in Springs - Aluminum - Small Block Ford - Each
Cylinder Head - Super 23 - Assembled - 1.940 / 1.500 in Valves - 175 cc Intake - 56 cc Chamber - 1.460 in Springs - Aluminum - Small Block Chevy - Each