- 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 2.200" intake valve and 1.600" exhaust valve
- Has a 280cc intake port
- Has a deck thickness of .750"
- Has a 70cc Combustion Chamber Standard
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
Flow Data w/4.125" Bore Plate
Lift Intake Exhaust
0.100 76 65
0.200 163 118
0.300 245 171
0.400 307 212
0.500 350 229
0.600 379 245
0.650 388 247
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