Discount prices on quality New & Reconditioned Automotive Replacement Part. This is a Set of Remanufactured OE Stock LS3, L92, 6.2L, 6.0L Cylinder Head Assemblies. 823 also fits 5364 , 821. Stock LS Series 6.0L / 6.2L Cylinder Heads with Rocker Arm Assembly. Combustion Chamber Volume: 70cc Intake Port Volume: 257cc Exhaust Port Volume: 87cc Intake Valve Diameter: 2.165 inches Exhaust Valve Diameter: 1.590 inches. Note : Surfaced, Pressure Tested, Valve Job. Accessories : Rocker Arms Included. Complete disassembly and thorough cleaning via hot tank & pressure tested to confirm casting integrity - New valve seats installed as necessary - New valve stem seals installed on all our heads &…