Assembled; Chrysler 361-440 Cubic Inch Engines; Aluminum; 210 CC Intake Port/ 70 CC Exhaust Port; 75 CC Chamber Volume; 2.14 Inch Intake Valve/ 1.81 Inch Exhaust Valve; 1.55 Inch Spring Diameter; Single; With Guides/ Seats/ Springs For Hydraulic Roller Cams