LS3 12-Degree Cylinder Heads Fully CNC Ported 1845

Cylinder Head - LS3 Mongoose - Assembled - 2.165 / 1.600 in Valves - 260 cc Intake - 69 cc Chamber - 1.270 in Springs - Aluminum - GM LS-Series - Sold as a Pair - Brand: Air Flow Research - Part Number: 1845