Utilizes the Gen IV LS7 valve-train and intake manifold.
• Designed for any new Gen IV short-block with 4.125" bore or larger.
• Uses a 2.250" intake valve and 1.600" exhaust valve
• Has a 305cc intake port
• Has a deck thickness of .750"
Each Mast Black Label cylinder head assembly includes:
• A fully CNC machined Mast Black Label aluminum cylinder head
• Mast nitrided & micro finished .700" Lift Dual Springs
• Mast lightweight stainless steel intake & exhaust valves
• Mast lightweight steel retainers
• Mast machined locks
• • NOTE: Gaskets, valve covers, rocker arms and pushrods not included