LS1/LS2/LS6 CNC Head Package

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NEW HEAD CORES INCLUDED!! Fully Assembled and a true ready-to-install cylinder head package. Free Shipping to 48 states! Rated for and tested at 1200+whp 15* Cathedral Port 230CC I ntake Runner (CNC Ported) 2.00"/1.60" Manley Valves Brian Crower Beehive Spring kit (Max lift .600") Bronze Valve Guides for improved valve stem life. Newen CNC Valve seat profiles for max efficiency and concentricity. Centroid 5-Axis ported for the most consistent runners on the market. CNC Chambers optional* 355-T6 High Density Aluminum heads with thicker deck for boosted applications. LS1 Flow Chart Lift Intake Exhaust .200" 157 cfm 116 cfm .300" 210 cfm 157 cfm .400" 264 cfm 195 cfm .500" 299 cfm 217 cfm .600" 312 cfm 225 cfm Show more