LSX Aluminum Cylinder Head Pair, Ported, SS Legal - Used/Fresh Chevrolet LSX Aluminum Cylinder Heads - Used / Fresh Super Stock Legal Valve Seats for 2.205 Int & 1.615 Exh Custom Porting 66cc Chamber 289cc Int 105cc Exh Machined for Jesel Shaft Rockers MSRP: Was: Now: $6,000.00 Add to Cart