ProMaxx Performance 9440: 9440 440 MAXX Aluminum Cylinder Heads for Big Block Chrysler (B/RB)
210cc Intake Ports
440 MAXX Aluminum Cylinder Heads Big Block Chrysler (B/RB) 210cc Intake Ports 84cc Combustion Chambers 2.14" Intake, 1.81" Exhaust Valves .600" Lift Hyd. Roller Valve Springs As-Cast Ports & Chambers Assembled, 2/pkg.