Flo-Tek Bare Cylinder Head 315-500; 315cc Aluminum 121cc, Rect Port for BBC

Combustion Chambers:121cc. Introducing the ALL-NEW, Exceptional Steel Cast Big Block Chevy 315 cc head from FLOTEK! With a beautiful Polycrystalline Diamond Cut Finish, and cast from a permanent steel mold, this makes the FLOTEK Cylinder Head an easy choice!