Billet G3 Hemi Cylinder HeadOur groundbreaking Billet G3 Hemi Cylinder head incorporates several unique design features that reduce complexity, cost and allow us to manufacture them most efficiently. The initial ports flow more than 480 cfm on the intake and 350 cfm on the exhaust and we will achieve further improvement prior to production. Design incorporates insights from Smith Innovations, BES Racing Engines and others with decades of racing, high performance engine