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As cast VS CNC intake port back to back flow test
060" Cometic AFM Intake Gaskets to suit BA LS3 Intake Manifolds
269110559905636/1433031056846908/
3" MCSA Port BE cylinder heads CNC ported and valve jobbed with CHE valve guides and CHE Ductile Iron valve seats
CID DM 470 Symmetrical Port Big Block Chevy Heads with as cast ports. (Price per pair BARE) Upgrade:Bronze Seat Upgrade As cast VS CNC intakePRODUCT DESCRIPTION The CID DM470 Big Block Chevy Cylinder Heads flow an impressive 470+ CFM from as cast ports! This allows us to offer serious performance from an affordable cylinder head and intake package. These symmetrical port BB Chevy cylinder heads no longer have left and right unequal length runners. We straightened up the valve angles to move away from the factory bath tub chambers and to a smaller more efficient combustion chamber. In order