Cylinder Head - Performer RPM - Assembled - 2.150 / 1.680 in Valve - 218 cc Intake - 77 cc Chamber - 1.105 in Springs - Aluminum - Oldsmobile V8 - Each

Cylinder Head - BB-2 Plus - Bare - 2.250 / 1.880 in Valves - 312 cc Intake - 119 cc Chamber - Angle Plug - Aluminum - Big Block Chevy - Each

Cylinder Head - Race Series 18 Degree - Bare - 2.350 / 1.840 in Valves - 383 cc Intake - 98 cc Chamber - Iron - Big Block Chevy - Each

Cylinder Head - Victor JR. - Assembled - 2.250 / 1.900 in Valve - 300 cc Intake - 106 cc Chamber - 1.550 in Springs - Angle Plug - Aluminum - Big Block Chevy - Each

Cylinder Head - Magnum Street - Assembled - 2.190 / 1.880 in Valves - 265 cc Intake - 112 cc Chamber - 1.550 in Springs - Aluminum - Big Block Chevy - Pair

Cylinder Head - Magnum Street - Assembled - 2.190 / 1.880 in Valves - 265 cc Intake - 109 cc Chamber - 1.550 in Springs - Aluminum - Big Block Chevy - Pair