MAST CYLINDER HEADS – BLACK LABEL LS1 – 245cc – 70cc CHAMBER – BARE – SINGLE – 510-223

MAST CYLINDER HEADS – BLACK LABEL LS1 – 245cc – 70cc CHAMBER – BARE – SINGLE – 510-223

• Designed for nay new GEN IV small block with 4.000″ or larger bore
• Perfect for LS1/LS6 stroked short blocks
• Accepts GEN IV LS3 valvetrain, valves & intake manifolds
• Uses a 2.165″ intake valve and 1.600″ exhaust valve
• Has a 245cc intake port
• Has a 70cc combustion chamber standard
• Has a deck thickess of .750″