• Designed for any new Gen IV 6.0L or 6.2L engine
• Including LS3, L99, L92, L76, LY6, LSA, and LS9 vAvailable as packages for LS3 Camaro, Corvette, L99 Camaro, & L76 Pontiac G8
• Accepts Gen IV LS3 valvetrain, valves, & intake manifolds
• Uses a 2.165" intake valve and 1.600" exhaust valve
• Has a 256cc intake port
• Has a 69cc combustion chamber standard

Each Mast Black Label cylinder head assembly includes:

• A fully CNC machined Mast Black Label aluminum cylinder head
• Mast micro finished .650 lift beehive valve 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

Flow Data w/4.000" Bore Plate
Lift Intake Exhaust
0.100 75 56
0.200 144 107
0.300 231 156
0.400 297 197
0.500 334 231
0.550 352 241
0.600 361 247
0.650 365 254