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The CNC porting procedure is a computer controlled machining operation that duplicates details from a hand ported cylinder head
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Does not include 10 rib crank pulley or 10 rib supercharger pulley
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CNC PORTED LS3 L99 LSA LS9 CYLINDER HEAD x 1 zl1 The CNC porting procedure isCNC ported GM LS3 aluminum cylinder heads can be used on 2008 2012 production 6. 2L based Chevrolet Corvettes and various 2007 2012 L92 L76 6. 2L and 6. 0L based GM trucks. LS3 LSA cylinder heads are precision CNC machined on a 5 axis CNC machine to ensure that tight tolerances are maintained. The CNC porting procedure is a computer controlled machining operation that duplicates details from a hand ported cylinder head. The port and chambers are
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