Description
MAST CYLINDER HEADS – BLACK LABEL LS3 – 295cc – 70cc CHAMBER – BARE – SINGLE – 510-204
• Utilizes the Gen IV LS7 OEM rockers, but accepts the LS3/L76 intake manifold
• Designed for any new Gen IV short-block with 4.125″ bore or larger
• The 6-bolt design is compatible with GM LSX and World LSX blocks
• Uses a 2.200″ intake valve and 1.600″ exhaust valve
• Has a 270cc intake port
• Has a deck thickness of .750″