ProMaxx Performance 9241: 440 MAXX Aluminum Cylinder Heads Big Block Chrysler (B/RB)
240cc Intake Ports
440 MAXX Aluminum Cylinder Heads Big Block Chrysler (B/RB) 240cc Intake Ports 84cc Combustion Chambers 2.19" Intake, 1.81" Exhaust Valves .650" Lift Hyd. Flat Tappet Valve Springs 100% CNC'd Ports and Chambers Assembled, 2/pkg.