• Designed for any Gen III or Gen IV cathedral port LS engine including LS1, LS2, LS6, LQ4 and LQ9
• Perfect for LS2 engines & short blocks (Gen III or Gen IV)
• Requires LS3 / LS2 offset intake rocker arms
• Accepts Gen III cathedral port intakes & LS1 / LS6 valve springs
• Uses a 2.040" intake valve and 1.570" exhaust valve
• Has a 215cc intake port
• Has a 63cc combustion chamber standard
• 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 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

NOTE: GM offset intake rocker arms required

Flow Data 235cc Small Bore
Lift Intake Exhaust
0.100 71 55
0.200 147 107
0.300 221 155
0.400 277.5 203
0.500 315 214
0.550 329 222
0.600 335 227
0.650 338 231
0.700 235
0.750 236
0.800 237