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MAST Motorsports Small Bore Rectangular Port 240cc LS3 11-Degree Bare CNC Head

$999.99

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  • Easy bolt on to convert your GM Gen III to GM Gen IV head technology
  • Mast Dual (Large Bore) and .650 lift beehive valve springs
  • Accepts LS3/L92 valvesprings, rocker arms, and intake manifolds
  • Outflows any aftermarket cathedral cylinder head on the market
  • Uses a 2.080" intake valve and 1.600" exhaust valve
  • Has a 62cc combustion chamber standard
  • Has a deck thickness of .750"

LS3 11 Degree 3.900" - 3.930" 240cc Small Bore CNC (62cc)



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  • Model: 510-201
  • FROM: MAST Motorsports

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we added this on Thursday 07 January, 2010.

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